Ocean Engineering 63 (2013) Contents lists available at SciVerse ScienceDirect. Ocean Engineering

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Ocean Engineering 63 (2013) Contents lists available at SciVerse ScienceDirect. Ocean Engineering"

Transcription

1 Ocean Engineering 63 (203) 9095 Contents lists available at SciVerse ScienceDirect Ocean Engineering ELSEVIER journal homepage: Hydrodynamic development of Inclined Keel HuUpropulsion K.C. Seo^'* M. Atlar^ D. Wang^'^ ' School of Marine Science and Technology, Newcastle University, UK ''Harbin Institute of Technology, China A R T I C L E INFO A B S T R A C T Article history: Received 2 October 202 Accepted 26 January 203 Available online 2 March 203 Keywords: Inclined Keel Hull A large propeller diameter Energy saving Greenhouse gas emission The gain in propulsive efficiency using a large propeller diameter with lower shaft rotation is perhaps the simplest and most robust way of improving the fuel economy of a ship. Within this framework the concept of "Inclined Keel Hull" has attracted much interest in small vessels such as fishing boats and tug boats to improve their pulling power however there has been no application of this concept to large commercial ships. This is the second of two papers on a hydrodynamic development of an Inclined Keel Hull with a welldesigned 3600 TEU container vessel based on the recently completed postgraduate study, (Seo, 200). In the first paper (Seo et al., 202) the validation for the bare hull resistance and wake distribution on the propeller plane was conducted by using advanced numerical tools and large scale model' tests as part of an ongoing collaborative FP7EU research project. Streamline (200). The present paper is the continuation of the validation study for the propulsion analysis of the same vessel by using numerical analysis and large scale selfpropulsion tests as part of the same project. The validation study confirmed the worthiness of the Inclined Keel Hull concept by achieving a 4.3% maximum power saving in the delivered power around design speed. 203 Elsevier Ltd. All rights reserved.. Introduction A successful ship design in terms of ship powering demands propulsion devices designed to give maximum efficiency and to absorb a low shaft power with low hull pressures, noise, cavitation erosion and vibration. In general it is a platitude for naval architects that a large propeller diameter in combination with a low rotational speed leads to an attractive gain in propulsive efficiency due to the reduction of axial losses. Additionally, a slow turning propeller can also have cavitation benefits. Many applications, especially for larger tankers (high thrust loading case) in which the axial energy loss dominates, therefore have taken place in adapting large and slow turning propellers as being one of the more robust and effective ways of achieving significant propulsive efficiencies (Beek, 2004; Ciping et al., 989). For the same vessel a further increase of propeller diameter would require the development of the new propeller aperture. In order to secure a deeper aft draught for a large diameter propeller the Authors have introduced "Inclined Keel Hull" configuration where the draught of * Correspondence to: School of iviarine Science and Technology, Armstrong Building, Newcastle University, NEI 7RU, United Kingdom. Tel.: ; fax: addresses: kwangcheol.seooncl.ac.uk, (K.C. Seo). " Formerly worked at School of Marine Science and Technology, UK. the vessel is greater at the aft perpendicular than that at the fore perpendicular with a linear variation in between. Newcastle University have been exploring the design and operational benefits of the Inclined Keel Hull concept using a welldesigned 3600 TEU container vessel, which is designated as 'Basis Hull (BH)', by increasing the diameter of its propeller about 3%. However, improving the operational benefits by the increase in propeller size and hence in propulsive efficiency is not a simple issue as the latter is the product of the hull, propeller and relativerotative efficiencies. The bare hull resistance around the hull and inflow velocity into the propeller plane are important hydrodynamics aspects ofthe hull form development. If the increase of the bare hull resistance of Inclined Keel Hull (IKH) is considerable than that of BH (Basis Hull) the economics of the IKH will not work since the expected propulsive gain from the enlarged diameter of the IKH will be lost to the potential increase in the effective power of the IKH. Using numerical design and analysis methods supported by limited model test analysis, Seo (200) demonstrated that the IKH concept may provide a 45% of power saving. In the previous companion paper (Seo et al, 202) a brief definition of the IKH concept and its development for the 3600 TEU container vessel were presented including the analyses for the resistance and hull wake by using the CFD codes. The numerical results were validated for the bare hull resistance and wake of the BH and IKH based on the model test measurements. Main particulars of the BH and IKH are given in Table /$see front matter 203 Elsevier Ltd. All rights 06/j.oceaneng reserved.

2 K.C. Seo et al / Ocean Engineering 63 (203) The resistance tests with two 7.5 m (Lpp) huil models confirmed the successful design of the IKH form which resulted in a % increase in the effecdve power as the authors had targeted in the IKH development. In order to demonstrate the effectiveness of the IKH concept over the BH, the propeller must be designed to operate effectively in a nonuniform and unsteady wake flow field behind the hull. In general, the main particulars of propellers are determined for the optimum condition by using standard (or chart) series model propeller data and the basic particulars of the propeller is further optimized with respect to the radially varying wake distribution. And final step of the design approach involves an analysis of the optimum propeller in circumferential varying three dimensional wake distributions by using advanced unsteady propeller analysis tools to further refine the propeller geometry for better cavitation and vibration performance. In this paper, propeller designs and propulsion analyses for the IKH and BH hulls are presented for further validation of the relative propulsive performance for the Inclined Keel Hull based Table Main particulars of Basis Hull (BH) and Inclined Keel Hull (IKH). Main dimensions BH IKH Lpp (m) Beam (m) Design Draft (m) TF TA.3 2. WSA (m2) Volume (m3) on the selfpropulsion tests conducted in the SSPA towing tank (Allenstrom and RiisbergJensen, 20 a). 2. Numerical analysis of propulsion Prior to the design of an efficient propeller for the IKH and comparison of its propulsive performance with that of the BH a set of preliminary selfpropulsion tests were conducted with both hull models. Based on the propeller hullinteraction data obtained from these early selfpropulsion model tests, which were obtained with suitable stock propellers for the BH and IKH and reported in Allenstrom and RiisbergJensen (20a, 20 b), the propeller designs were carried out for both BH and IKH. Both propellers (i.e. for BH and IKH) were designed using the same procedure in three stages that are "Basic Design", "Lifting Line design (or Wake Adaptation)" and " Design (or Design Analysis)". For each of these stages, the design strategy and criteria were different to achieve the ultimate design objective, i.e., higher propulsion efficiency with lower cavitation and vibration. Each design stage was iterative with its own objective that made the entire design optimization task multiobjective and iterative as shown by the flowchart in Fig. and described in the following with more details. In the basic design stage, the main design strategy was to make use of wellestablished propeller design practices and experiences, which are well presented in the systematic propeller chart series, to achieve a more reliable basic design and to avoid any interaction (and hence iteration) with the other two design stages. In the basic design stage, the main particulars of both propellers (mainly pitch. Start: Design Specification Basic Design: Chart series D, RPM, A E/AQ, Chord, T^ax. V Lifting Line Design: Based on Wake Distribution r esign Opt. Circulation Distribution Design Wake Analysis: Select Skew Distribution Opt. Circulation Distribution Unload Tip Lifting Surface Design: Relocate Loading Loading Camber & Skew between Camber & Pitch Modify Loading Distribution Unsteady Lifting Surface Analysis: Cavitation & Hull pressures Modify Skew Design Design Fig.. Propeller design block diagram.

3 92 K.C. Seo et al. / Ocean Engineering 63 (203) 9095 shaft speed and blade area) were selected in iterative manner for the optimum propulsive efficiencies and minimum risk of cavitation for the maximum propeller diameter for each ship with the same ship speed (i.e. 24 knots) by using BSeries propeller chart (van Lammeren et al., 969) and Burrill's cavitation diagram (Burrill and Emerson, 963). The wake fraction and thrust deduction fraction used were based on the selfpropulsion tests with stock propellers. As shown in Table 2, after the basic design, the open water efficiency for the IKH propeller was 3.8% higher than that of the BH due to the increased propeller diameter and resulting lower propeller shaft speed. Consequently the IKH was expected to achieve a saving in shaft power of 2.7%, due to the improvement Table 2 Comparison of basic propulsive performance. Speed(kn) P/D J /fr IOKQ BH IKH KT/J' '/o N (rpm) Q (kn m)' PD (kw) B.A.R , , in the open water efficiency despite the % increase of hull resistance. In the lifting line design stage, the design objective was to adapt the propellers, which were designed from the chart series, to the wakes of the target ships based on Lerbs' lifting line method (Lerbs, 952). Hence the circulation distributions of both propellers were optimized to its individual axial wake distribution, which was obtained from the model tests, by using an inhouse lifting line code for achieving the maximum propeller efficiency with the critena of absorbing their required engine powers. The balanced design stage consisted of three substages such as "wake analysis", "lifting surface design" and "unsteady lifting surface analysis". In the wake analysis substage the wake distributions of both ship models were carefully analyzed for selecting the propeller skew distributions in case that the cavitation was inevitable. The objective of the lifting surface design substage was to further improve the lifting line design results in terms of the blade camber, propeller pitch and propeller skew. For this purpose, Greeley and Kerwin's lifting surface design code (Greeley and Kerwin, 982) was used. The objective of the unsteady lifting surface analysis substage was to predict the propeller cavitation.00r 0.95R 0.90R R 0.70R 0.60R' 0.60R 0.40R 0.30R" 0.20li Taper :0 Expanded View.58 > 0.73 Profile View Transverse View Fig. 2. Designed propeller for Basis Hull Expanded View Profile View Transverse View Fig. 3. Designed propeller for Inclined Keel Hull.

4 K.C. Seo et al. / Ocean Engineering 63 (203) performance and vibration. For this purpose inhouse unsteady lifting surface code IJPCA9 (Szantyr and Glover, 990) was used. As shown in Fig. if the cavitation extent and ship hull pressures were acceptable, the circulation distribution optimized from the lifting line design stage would be kept unchanged, and the design iteration would not go back to the lifting line design stage. In this case, the loading at certain radii may be relocated locally between the maximum camber and pitch at those radii to improve their cavitation extent. In case that the cavitation and hull pressures were excessive, hence not acceptable, firstiy the skew of propeller would be increased to improve the situation. If the resulting cavitation and hull pressures were still not acceptable, the radial distribution of the propeller loading had to be modified, usually by unloading the blade towards the tip. In this case the design iteration had to be taken back to the lifting line design stage as shown in Fig.. The main features and sectional details of each propeller are shown in Figs. 2 and 3 as the final design obtained from the above described design process whilst the basic dimensions of the propellers are given in Table 3 together with the numerical results of their performances based on the unsteady lifting surface analysis as described above. As can be seen in Table 3 the BH showed the power delivered to the propeller at this optimum operating condition was PD=27,962 kw. The similar analysis for the IKH propeller indicated that the delivered power, PD=26,888 kw for the optimum operating condition. This revealed that the delivered power for Table 3 Comparison of basic dimensions and numerical propulsive performance of designed propellers at the design speed (24 l<nots). Speed(kn) Blade no. Dia. (m) B.A.R BH IKH P/D Thrust(kN) N (rpm) Q(N m) PD (kw) , ,888 Basis Hull i Inclined Keel Hull IKH propeller would result in a 3.84% saving compared to the BH at a 22.6% lower shaft speed rate. The hull pressure computations were carried out at a point on the hull where the pressures were expected to have the peak values. These positions for the BH and IKH were at 6.2 m and 6.83 m above the propeller shaft axis in the propeller plane, respectively. IKH hull was designed to have a similar level of propeller clearance to BH hull and to run at a deeper draught which has the effect of reducing the potential for sheet cavity developed over the suction side of the propeller, together with improving the radiated hull surface pressure. To give a more comprehensive comparison between the BH and the IKH, harmonic analysis of the fluctuating pressure induced by the propeller up to fourth blade rate are shown in Fig. 4. These comparison results show that the IKH will offer benefits by reducing the hull pressure fluctuations at the first and second harmonic by almost 35%. 3. Experimental analysis of propulsion The model propellers were manufactured by SSPA according to the design data provided by the authors to SSPA. However during this process an unfortunate error took place resulting in that the manufactured BH model propeller had a smaller BAR than the designed one as shown in Table 4. The difference was 5.5% decrease in the BAR due to the human error during the exchange of information on the chord lengths of the blade sections in the excel tables although the drawings were correct. However the remaining data of the BH propeller were the same as the designed one produced by the authors. This unfortunate situation, in fact, put the BH model propeller in more efficient and hence more competitive than the intended numerical design that must be born in mind in the comparisons. In other word, the BH model propeller would be overperforming due to its lower frictional loss. However, the propeller manufactured will be exposed to higher risk of cavitation and hull pressure than the 0.8 BHKIExp BH IOKqExp BH Etao Exp. IKH KtExp IKH IOKq Exp IKH Etao Exp «BH KlInhouse BH IOKq In house BH EtaoInhouse IKH KtInhouse IKH IOKqInhouse 0 IKH EtaoInhouse propeller L~~l L 2 BR 3 BR 4 BR 0.4 Blade Rate Frequency Fig. 4. Comparison of numerical hull pressures induced by the propeller. 0.2 Table 4 Comparison of BH propeller designed and manufactured. BH propeller. Blade no. B.A.R BHdesigned BHmanufactured O.i Advanced ratio(j) Fig. 5. Comparison of open water efficiency from model test and inhouse lifting surface code for Basis Hull and Inclined Keel Hull (model scale).

5 K.C. Seo et al. / Ocean Engineering 63 (203) Table 5 p o w e r saving a r o u n d t h e d e s i g n speed. T h e p o w e r s a v i n g is C o m p a r i s o n o f propulsive p e r f o r m a n c e at 24 knot. a p p a r e n t b e t w e e n 8 and 2 6 l<nots w i t h a m a x i m u m o f 4.3% at 2 3 l<nots. PE(kW) N(rpm) il I/H 'IR 'ID PD ( k W ) BH 20, ,75 IKH 20, , Conclusions This paper presents t h e f i n a l o u t c o m e o f t h e I K H d e v e l o p m e n t, w h i c h e x p l o r e d t h e p r o p u l s i v e benefits o f 3% larger p r o p e l l e r d i a m e t e r t h a n t h e BH, i n t e r m s o f h y d r o d y n a m i c Effective power conducted Streamline project Streamline, (200). The u s i n g t h e i n h o u s e s o f t w a r e codes a n d an assessment o f t h e / : numerical /; J ft/' of propulsive efficiency made against Based on t h e k n o w l e d g e g a i n e d so far i t w a s f o u n d that t h e success o f t h e ' I n c l i n e d Keel H u l l ' a p p l i c a t i o n i n t o a large c o m m e r c i a l vessel requires a f i n e balance b e t w e e n t h e m i n i m a l / / f predictions m o d e l test results w a s made. St g in the o p t i m u m designs f o r t h e B H a n d IKH p r o p e l l e r s are p r e s e n t e d g performance w i t h t h e help o f advanced CFD tools a n d large scale m o d e l tests y B H Delivered power o. IKH E f f e c t i v e p o w e r.., IKH Delivered power increase i n the bare h u l l resistance a n d a m a x i m u m g a i n i n t h e p r o p u l s i v e efficiency. M o r e specifically t h e f o l l o w i n g conclusions are reached based o n t h e i n v e s t i g a t i o n p r e s e n t e d i n this paper: v ) N u m e r i c a l s t u d y i n d i c a t e d t h a t t h e I K H c a n o f f e r 4% o f p o w e r saving and b e n e f i t s o f r e d u c i n g t h e h u l l pressure f l u c t u a t i o n s f a p p r o x i m a t e l y by 35% over t h e BH pressure levels at f i r s t t w o ^ h a r m o n i c s f o r t h e design speed o f 2 4 k n o t s. 2) Model \ tests revealed t h a t the open water and relative r o t a t i v e e f f i c i e n c y o f t h e I K H p r o p e l l e r w a s 4% and % h i g h e r 24 t h a n t h a t o f t h e BH, r e s p e c t i v e l y, a t a 2.5% l o w e r s h a f t speed. Stiip S p e e d (kn) This r e s u l t e d i n a 4.3% m a x i m u m s a v i n g i n t h e d e l i v e r e d p o w e r at 23 k n o t s w h i l s t t h e s a v i n g w a s 4% at t h e design Fig.6. C o m p a r i s o n o f d e l i v e r e d p o w e r at f u l l scale. speed 3 ) The above findings favorably confirm the numerical pre designed a l t h o u g h t h e earlier presented h u l l pressure p r e d i c t i o n s d i c t i o n s f o r p o w e r saving a n d hence s u p p o r t i n g t h e w o r t h i w e r e a l l based o n t h e designed, i.e., c o r r e c t p r o p e l l e r. ness o f t h e I K H c o n c e p t f o r t h e d e s i g n a p p l i c a t i o n s o f large The e n t i r e p r o p u l s i o n tests w e r e conducted i n SSPA and reported c o m m e r c i a l vessels. by A l l e n s t r o m and RiisbergJensen (20 a). The c o m p a r i s o n o f the propeller o p e n w a t e r performances f r o m the m o d e l tests and inliouse unsteady l i f t i n g surface code f o r t h e models o f t h e t w o propellers is s h o w n i n Fig. 5. Numerical predictions o f t h r u s t and Acknowledgments torque coefficients correspond to the m o d e l test results w i t h i n 5%. The selfpropulsion m o d e l tests were carried o u t at several cruising speeds a r o u n d the design ship speed o f 2 4 knots and f u l l scale The c o n c e p t presented i n t h i s p a p e r w a s d e v e l o p e d during t h e p r i n c i p a l a u t h o r ' s Ph.D. s t u d y at N e w c a s t l e U n i v e r s i t y and p o w e r p r e d i c t i o n was conducted using t h e ITTC 78 performance s p o n s o r e d by t h e Korea Science a n d E n g i n e e r i n g prediction method. G r a n t n o : M a n d Dr. Sasaki Funds. The basis Foundation Table 5 s h o w s t h e c o m p a r a t i v e p r o p u l s i v e e f f i c i e n c y a n d its h u l l f o r m used i n this s t u d y is a c o u r t e s y o f M r. D a n i e l W i n t e r s o f c o m p o n e n t s as w e l l as t h e f u l l scale d e l i v e r e d p o w e r at t h e design O r b i s L t d. F i n a l l y t h e e x p e r i m e n t a l v a l i d a t i o n s o f t h e IKH c o n c e p t speed ( 2 4 k n o t s ) f o r t h e B H a n d IKH. The results o f t h e f i n a l m o d e l is b e i n g s p o n s o r e d by t h e EU FP7 p r o j e c t STREAMLINE ( test for t h e BH s h o w e d t h a t the o p t i m u m p r o p e l l e r e f f i c i e n c y FP7SST2008RTD). The a u t h o r s t h e r e f o r e g r a t e f u l l y a c k n o w l was edge the above c o n t r i b u t i o n s m a k i n g t h e I K H research a n d t h i s whilst the power delivered to t h e p r o p e l l e r was P D = 2 6, 5 7 k W. T h e s i m i l a r analysis f o r t h e I K H p r o p e l l e r i n d i p a p e r possible. cated t h a t t h e o p t i m u m p r o p e l l e r e f f i c i e n c y w a s and t h e d e l i v e r e d p o w e r w a s P D = 2 5, k W. This revealed t h a t t h e o p e n w a t e r a n d r e l a t i v e r o t a t i v e efficiencies o f t h e IKH p r o p e l l e r w e r e References 4% a n d % h i g h e r t h a n t h a t o f t h e BH a t a 2.5% l o w e r s h a f t speed, r e s p e c t i v e l y. This w o u l d r e s u l t i n a 4% saving i n t h e d e l i v e r e d p o w e r f o r t h e IKH d e s p i t e t h e fact t h a t t h e I K H p r o d u c e d a % h i g h e r e f f e c t i v e p o w e r t h a n t h a t o f t h e BH. A n o t h e r f a c t o r t h a t m u s t be b o r n i n m i n d i n t h i s c o m p a r i s o n is t h a t t h e m a n u f a c t u r e d BH m o d e l p r o p e l l e r w o u l d be o v e r p e r f o r m i n g t h a n t h e designed one w h i c h w o u l d r e s u l t i n t h e reduced r e l a t i v e p e r f o r m a n c e g a i n for the IKH. A l l e n s t r o m, B., R i i s b e r g J e n s e n, S., 2 0 a. S t r e a m l i n e : I n c l i n e d K e e l C o n c e p t A l l e n s t r o m, B., R i i s b e r g J e n s e n, S., 2 0 b. S t r e a m l i n e : I n c l i n e d K e e l C o n c e p t scale for b o t h t h e h u l l s w h i c h cleariy presents an average o f 4% WP. 5, D e s i g n H u l l. SSPA R e p o r t n o. R E A. B e e k, T.V., T e c h n o l o g y G u i d e l i n e s f o r E f f i c i e n t D e s i g n a n d O p e r a t i o n o f S h i p Propulsions. Marine News, Wartsila. B u r r i l l, L C, E m e r s o n, A., P r o p e l l e r c a v i t a t i o n : f u r t h e r t e s t s o n 6 i n. p r o p e l l e r m o d e l s i n t h e k i n g ' s c o l l e g e c a v i t a t i o n t u n n e l. T r a n s. NECIES 7 8, C i p i n g, J., L i a n g q u a n, C, W e i m i n g, T., 989. p r o p u l s i v e qualities of large full s h i p w i t h Fig. 6 s h o w s t h e c o m p a r i s o n o f t h e d e l i v e r e d p o w e r at f u l l WP. 5, Basis H u l l. SSPA R e p o r t n o. R E A. Investigation low on revolution resistance large and diameter propeller. In: Proceedings of the I n t e r n a t i o n a l S y m p o s i u m on Ship Resistance a n d P o w e r i n g Performance, pp

6 K.C. Seo et al. / Ocean Engineering 63 (20)3) Greeley, D.S., Kerwin, J.E., 982. Numerical methods for propeller design and analysis in steady flow. Trans. SNAME 90, Lerbs, H.W., 952. Moderately loaded propellers with a finite number of blades and an arbitrary distribution of circulation. Trans. SNAME 60, 737. Seo, K.C, 200. Application of Inclined Keel to Large Commercial Ships. Ph.D. Thesis. Newcastle University, UK. Seo, ICC, Atlar, M., Sampson, R., 202. Hydrodynamic development of inclined keel hullresistance. Ocean Eng. 47, 78. Szantyr, J.A.. Clover, E.J., 990, UPCA9The Lifting Surface Program for Unsteady Propeller Cavitation Analysis. Instructions for the User. Emerson Cavitation Tunnel Report, Department of Marine Technology, University of Newcastle Upon Tyne, UK. Streamline, 200. Annex. Description of Work. European Union 7th Framework Programme FP7SST2008RTD. van Lammeren, W.P.A., van Manen, J.D., Oosterveld, M.W.C, 969. The Wageningen Bscrew series. Trans. SNAME 77,

Resistance & Propulsion (1) MAR Propeller hull interaction

Resistance & Propulsion (1) MAR Propeller hull interaction Resistance & Propulsion (1) MAR 2010 Propeller hull interaction Propeller hull interaction Propeller operating behind a hull will have different characteristics than the same design operating in open water,

More information

DNVGL-CG-0039 Edition December 2015

DNVGL-CG-0039 Edition December 2015 CLASS GUIDELINE DNVGL-CG-0039 Edition December 2015 The electronic pdf version of this document, available free of charge from http://www.dnvgl.com, is the officially binding version. FOREWORD DNV GL class

More information

Technology guidelines for efficient design and operation of ship propulsors by Teus van Beek, Propulsor Technology, Wärtsilä Propulsion Netherlands BV

Technology guidelines for efficient design and operation of ship propulsors by Teus van Beek, Propulsor Technology, Wärtsilä Propulsion Netherlands BV The Ship Power Supplier Technology guidelines for efficient design and operation of ship propulsors by Teus van Beek, Propulsor Technology, Wärtsilä Propulsion Netherlands BV Introduction The number of

More information

Review of Engine Shafting, Propulsion and Transmission Systems Key Considerations for Industry

Review of Engine Shafting, Propulsion and Transmission Systems Key Considerations for Industry Review of Engine Shafting, Propulsion and Transmission Systems Key Considerations for Industry By Dag Friis Bob McGrath Christian Knapp Ocean Engineering Research Centre MUN Engineering 1 Scope: Components

More information

Hydrodynamics for Ocean Engineers Prof. A.H. Techet Fall 2004

Hydrodynamics for Ocean Engineers Prof. A.H. Techet Fall 2004 13.012 Hydrodynamics for Ocean Engineers Prof. A.H. Techet Fall 2004 Marine Propellers Today, conventional marine propellers remain the standard propulsion mechanism for surface ships and underwater vehicles.

More information

Propellers and propulsion

Propellers and propulsion Propellers and propulsion Kul-24.3200 Introduction of Marine Hydrodynamics Aalto University 02/11/2015 Introduction of Marine Hydrodynamics 1 Content of the course Resistance Propulsion Introduction, Momentum

More information

PROPELLER DESIGN AND CAVITATION Prof. Dr. S. Beji 1

PROPELLER DESIGN AND CAVITATION Prof. Dr. S. Beji 1 PROPELLER DESIGN AND CAVITATION Prof. Dr. S. Beji 1 Introduction Propuslion: Propulsion is the act or an instance of driving or pushing forward of a body, i.e. ship, by a propeller (in our case a screw

More information

Using Single Propeller Performance Data to Predict the Performance of a Counterrotating Pair

Using Single Propeller Performance Data to Predict the Performance of a Counterrotating Pair Using Single Propeller Performance Data to Predict the Performance of a Counterrotating Pair Jessica A. Jacobson, Wayne L. Neu, John B. Hennage, Ryan K. Williams, Clinton D. Jones Department of Aerospace

More information

CFD ANALYSIS OF CONTROLLABLE PITCH PROPELLER USED IN MARINE VEHICLE

CFD ANALYSIS OF CONTROLLABLE PITCH PROPELLER USED IN MARINE VEHICLE CFD ANALYSIS OF CONROLLABLE PICH PROPELLER USED IN MARINE VEHICLE Aditya Kolakoti 1,.V.K.Bhanuprakash 2 & H.N.Das 3 1 M.E in Marine Engineering And Mechanical Handling, Dept of Marine Engineering, Andhra

More information

Bird-Johnson fixed pitch propellers

Bird-Johnson fixed pitch propellers Bird-Johnson fixed pitch propellers...leading the field of marine propeller technology for more than forty years Rolls-Royce Naval Marine, Inc. 3719 Industrial Road Pascagoula, Mississippi 39568 USA Telephone:

More information

Advanced Propulsion System GEM 423E

Advanced Propulsion System GEM 423E Advanced Propulsion System GEM 423E Week12: Kappel Propellers Dr. Ali Can Takinacı Assosciate Professor in The Faculty of Naval Architecture and Ocean Engineering 34469 Maslak Istanbul Turkey Contents

More information

2. PROPELLER GEOMETRY

2. PROPELLER GEOMETRY a) Frames of Reference 2. PROPELLER GEOMETRY 10 th International Towing Tank Conference (ITTC) initiated the preparation of a dictionary and nomenclature of ship hydrodynamic terms and this work was completed

More information

Resistance & Propulsion (1) MAR 2010. Presentation of ships wake

Resistance & Propulsion (1) MAR 2010. Presentation of ships wake Resistance & Propulsion (1) MAR 2010 Presentation of ships wake Wake - Overview Flow around a propeller is affected by the presence of a hull Potential and viscous nature of the boundary layer contribute

More information

Scale effects on propellers for large container vessels

Scale effects on propellers for large container vessels First International Symposium on Marine Propulsors smp 09, Trondheim, Norway, June 2009 Scale effects on propellers for large container vessels Sven-Brian Müller 1, Moustafa Abdel-Maksoud 2, Gerd Hilbert

More information

Application of CFD in connection with ship design

Application of CFD in connection with ship design DANSIS meeting Lyngby, 13 May 2009 Application of CFD in connection with ship design www.force.dk Background Method Examples Summary Claus Daniel Simonsen FORCE Technology Background When a ship, which

More information

12 PROPELLERS AND PROPULSION

12 PROPELLERS AND PROPULSION 12 PROPELLERS AND PROPULSION 12.1 Introduction We discuss in this section the nature of steady and unsteady propulsion. In many marine vessels and vehicles, an engine (diesel or gas turbine, say) or an

More information

Aspects of the Design Procedure for Propellers Providing Maximum Bollard Pull

Aspects of the Design Procedure for Propellers Providing Maximum Bollard Pull Suntec Convention Centre, Singapore Organised by the ABR Company Ltd Day 3 Paper No. 2 Aspects of the Design Procedure for Propellers Providing Maximum Bollard Pull Dr Paul Mertes, Schottel GmbH & Co,

More information

The INSEAN E779a Propeller Test Case: a Database For CFD Validation

The INSEAN E779a Propeller Test Case: a Database For CFD Validation The INSEAN E779a Propeller Test Case: a Database For CFD Validation G.Calcagno,F. Di Felice, M. Felli,S. Franchi, F.Pereira, F.Salvatore INSEAN (Italian Ship Model Basin), via di Vallerano 139, 00128 Rome,

More information

Hull design boosts fuel economy of ultra large container ships. Tor Svensen, COO DNV Maritime and Oil & Gas

Hull design boosts fuel economy of ultra large container ships. Tor Svensen, COO DNV Maritime and Oil & Gas Hull design boosts fuel economy of ultra large container ships Tor Svensen, COO DNV Maritime and Oil & Gas Major savings 3 mill USD per ship per year 10 new 13,800 TEU container ships Optimized for flexible

More information

Propellers. Inboard propellers and speed calculation Marine Engines 2.1L 16L

Propellers. Inboard propellers and speed calculation Marine Engines 2.1L 16L Propellers Inboard propellers and speed calculation Marine Engines 2.1L 16L Foreword The purpose of this information is to provide installers, designers or users with a simple and effective help in choosing

More information

Development of a High Performance Ducted Propeller

Development of a High Performance Ducted Propeller Vancouver, Canada Organised by the ABR Company Ltd Day Paper No. 1 7 Development of a High Performance Ducted Propeller Yuichi Tamura (speaker/co-author), Yoshiki Nanke (speaker/co-author), Masao Matsuura

More information

IPS Inboard performance system. Volvo Penta IPS, the future for fast vessels

IPS Inboard performance system. Volvo Penta IPS, the future for fast vessels IPS, the future for fast vessels 1 dec 2010 Save fuel and reduce environmental impact 2 dec 2010 Best efficiency with Contra Rotating propellers Double blade area means smaller prop diameter for same output

More information

PERFORMANCE OF A FAMILY OF SURFACE PIERCING PROPELLERS

PERFORMANCE OF A FAMILY OF SURFACE PIERCING PROPELLERS PERFORMANCE OF A FAMILY OF SURFACE PIERCING PROPELLERS Marco Ferrando, Università degli Studi di Genova - DINAV, Genova, aly Stefano Crotti, Università degli Studi di Genova - DINAV, Genova, aly Michele

More information

Propeller Design and Propulsion Concepts for Ship Operation in Off- Design Conditions

Propeller Design and Propulsion Concepts for Ship Operation in Off- Design Conditions Second International Symposium on Marine Propulsors smp 11, Hamburg, Germany, June 2011 Propeller Design and Propulsion Concepts for Ship Operation in Off- Design Conditions Thomas Stoye Flensburger Schiffbau-Gesellschaft

More information

OPTIMIZING ENERGY EFFICIENCY

OPTIMIZING ENERGY EFFICIENCY Courtesy of Finnlines Oy, photographed by Hannu Laakso. Energopac incorporated in model tests, photographed by HSVA. CFD capabilities within Wärtsilä are state-of-the-art. OPTIMIZING ENERGY EFFICIENCY

More information

DESIGN B-SERIES PROPELLER OF TRADITIONAL FISHING VESSEL ZULHILMI BIN SHAFIE

DESIGN B-SERIES PROPELLER OF TRADITIONAL FISHING VESSEL ZULHILMI BIN SHAFIE DESIGN B-SERIES PROPELLER OF TRADITIONAL FISHING VESSEL ZULHILMI BIN SHAFIE Report submitted in partial fulfillment of the requirements for the award of Bachelor of Mechanical Engineering with Automotive

More information

Azimuth thrusters. propulsors

Azimuth thrusters. propulsors Azimuth s Rolls-Royce is a global leader in the supply of azimuth s. In an azimuth the propeller rotates 360 around the vertical axis so the unit provides propulsion, steering and positioning thrust for

More information

Prediction of Resistance and Propulsion Power of Ships

Prediction of Resistance and Propulsion Power of Ships Prediction of Resistance and Propulsion Power of Ships Technical University of Denmark Hans Otto Kristensen University of Southern Denmark Marie Lützen Project no. 21-56, Emissionsbeslutningsstøttesystem

More information

Numerical Study on the Influence of Boss Cap Fins on Efficiency of Controllable-pitch Propeller

Numerical Study on the Influence of Boss Cap Fins on Efficiency of Controllable-pitch Propeller J. Marine Sci. Appl. (2013) 12: 13-20 DOI: 10.1007/s11804-013-1166-9 Numerical Study on the Influence of Boss Cap Fins on Efficiency of Controllable-pitch Propeller Ying Xiong 1, Zhanzhi Wang 1* and Wanjiang

More information

Available in New Zealand from

Available in New Zealand from MAXIMIZING YOUR PERFORMANCE AT SEA Available in New Zealand from p: f: QUALITY MARINE EQUIPMENT FROM AROUND THE WORLD +64 9 448 5900 +64 9 448 5911 info@sopac.co.nz www.sopac.co.nz PO Box 303-180 North

More information

MAXIMIZING YOUR PERFORMANCE AT SEA.

MAXIMIZING YOUR PERFORMANCE AT SEA. MAXIMIZING YOUR PERFORMANCE AT SEA www.max-prop.com MAX-PROP AUTOMATIC FEATHERING PROPELLER Max-Prop is the leading low drag propeller on the market today. Since starting production in the 1970 s Max-Prop

More information

Waterjets. propulsors. courtesy of Austal

Waterjets. propulsors. courtesy of Austal Waterjets The Rolls-Royce Kamewa waterjet range is the broadest in the business. Manufactured in aluminium and stainless steel, they are available in powers from kw to above 36MW. Using the latest design

More information

Propeller Fundamentals. A propeller is an interface between an engine and an aircraft. It creates thrust for flying an aircraft.

Propeller Fundamentals. A propeller is an interface between an engine and an aircraft. It creates thrust for flying an aircraft. 28 1 Propeller Fundamentals A propeller is an interface between an engine and an aircraft. It creates thrust for flying an aircraft. 2 Propeller blade 4-bladed propeller 3-bladed propeller 3 All propulsors

More information

MAN Diesel & Turbo. Frederik Carstens Head of Offshore Sales Marine Medium Speed. Frederik Carstens & Karsten Borneman

MAN Diesel & Turbo. Frederik Carstens Head of Offshore Sales Marine Medium Speed. Frederik Carstens & Karsten Borneman Frederik Carstens Head of Offshore Sales Marine Medium Speed < 1 > Disclaimer All data provided on the following slides is for information purposes only, explicitly non-binding and subject to changes without

More information

Installation- and users manual for MAX-PROP Automatic Feathering Propeller (Two blades CLASSIC)

Installation- and users manual for MAX-PROP Automatic Feathering Propeller (Two blades CLASSIC) Installation- and users manual for MAX-PROP Automatic Feathering Propeller (Two blades CLASSIC) 1 CONTENTS MAX-PROP Automatic Feathering Propeller (Two blades CLASSIC) 1 Introduction 3 2 Pitch adjustment

More information

WÄRTSILÄ CONTROLLABLE PITCH PROPELLER SYSTEMS

WÄRTSILÄ CONTROLLABLE PITCH PROPELLER SYSTEMS WÄRTSILÄ CONTROLLABLE PITCH PROPELLER SYSTEMS WCP propeller system PROPULSION SOLUTIONS WITH WÄRTSILÄ CONTROLLABLE PITCH PROPELLER SYSTEMS The Wärtsilä Controllable Pitch propeller systems have been developed

More information

Propeller Selection For Boats and Small Ships

Propeller Selection For Boats and Small Ships E Marine Training - Prop Matching - February, 2005 1 Propeller Selection For Boats and Small Ships Chris Barry This course is intended to cover the basic elements of marine propulsion, especially propellers

More information

FAILURE OF A CONTROLLABLE PITCH PROPELLER SYSTEM AT NO LOAD OPERATION

FAILURE OF A CONTROLLABLE PITCH PROPELLER SYSTEM AT NO LOAD OPERATION FAILURE OF A CONTROLLABLE PITCH PROPELLER SYSTEM AT NO LOAD OPERATION ~ Herbert Roeser TransMarine Propulsion Systems, Inc. It is often assumed that failure of a mechanical system can occur only under

More information

Renilson Marine Consulting Pty Ltd

Renilson Marine Consulting Pty Ltd REDUCING UNDERWATER NOISE POLLUTION FROM LARGE COMMERCIAL VESSELS March 2009 Commissioned by The International Fund for Animal Welfare Summary There is increasing concern about the effects of underwater

More information

Application of Advanced CFD Technology to Energy-Saving Hull form Development

Application of Advanced CFD Technology to Energy-Saving Hull form Development 50 Application of Advanced CFD Technology to Energy-Saving Hull form Development MAKOTO NISHIGAKI *1 MAKOTO KAWABUCHI *2 SATORU ISHIKAWA *3 Due to the advancement of computational fluid dynamics (CFD)

More information

Quasi-Steady Two-Quadrant Open Water Tests for the Wageningen Propeller C- and D-Series

Quasi-Steady Two-Quadrant Open Water Tests for the Wageningen Propeller C- and D-Series Twenty-Ninth Symposium on Naval Hydrodynamics Gothenburg, Sweden, 26-3 August 202 Quasi-Steady Two-Quadrant Open Water Tests for the Wageningen Propeller C- and D-Series Jie Dang, Joris Brouwer, René Bosman

More information

Development of a Marine Propeller with Non-Planar Lifting Surfaces

Development of a Marine Propeller with Non-Planar Lifting Surfaces Development of a Marine Propeller with Non-Planar Lifting Surfaces Poul Andersen, Visitor, Technical University of Denmark, Lyngby, Denmark. Jürgen Friesch, Member, Hamburg Ship Model Basin, Hamburg, Germany,

More information

The Kobold marine turbine: from the testing model to the full scale prototype

The Kobold marine turbine: from the testing model to the full scale prototype The Kobold marine turbine: from the testing model to the full scale prototype Guido Calcagno INSEAN Italian National Institute for Naval Architecture Studies and Testing (Rome Italy) Alberto Moroso Ponte

More information

Rotary vane steering gear for smaller vessels

Rotary vane steering gear for smaller vessels Steering gear Rotary vane steering gear for smaller vessels The SR series is designed with integrated frequency controlled pumps. General description Rolls-Royce supplies a complete range of steering gear,

More information

Azimuthing pulling propeller

Azimuthing pulling propeller Azimuthing pulling propeller The Rolls-Royce azimuthing pulling propeller, type Azipull, is a low drag, highly efficient pulling thruster. It combines the advantage of the pulling propeller with the flexi

More information

ECONOMY. October 13 th, Ir. Frans Quadvlieg, Senior Project Manager. MARIN (MAritime Research Institute Netherlands)

ECONOMY. October 13 th, Ir. Frans Quadvlieg, Senior Project Manager. MARIN (MAritime Research Institute Netherlands) MARINE PROPULSION AND FUEL ECONOMY October 13 th, 2009 Ir. Frans Quadvlieg, Senior Project Manager MARIN (MAritime Research Institute Netherlands) CONTENTS: MARIN (short introduction) GREEN awareness GREEN

More information

FULL SCALE COMPARISON BETWEEN THE PERFORMANCES OF A SUPERFERRY FITTED CONSECUTIVELY WITH HIGH SKEW CONVENTIONAL BLADES AND CLT BLADES

FULL SCALE COMPARISON BETWEEN THE PERFORMANCES OF A SUPERFERRY FITTED CONSECUTIVELY WITH HIGH SKEW CONVENTIONAL BLADES AND CLT BLADES C A N A L D E E X P E R I E N C I A S H I D R O D I N Á M I C A S, E L P A R D O Publicación núm. 195 FULL SCALE COMPARISON BETWEEN THE PERFORMANCES OF A SUPERFERRY FITTED CONSECUTIVELY WITH HIGH SKEW

More information

ISO INTERNATIONAL STANDARD. Ships and marine technology Propulsion plants for ships Part 1: Vocabulary for geometry of propellers

ISO INTERNATIONAL STANDARD. Ships and marine technology Propulsion plants for ships Part 1: Vocabulary for geometry of propellers INTERNATIONAL STANDARD ISO 3715-1 First edition 2002-03-01 Ships and marine technology Propulsion plants for ships Part 1: Vocabulary for geometry of propellers Navires et technologie maritime Installations

More information

CONTENT. Developed by Volvo Penta 4. Propeller anatomy 5. Duoprop technology 7 PROPELLERS FOR AQUAMATIC. Duoprop for DP280, 290 drives.

CONTENT. Developed by Volvo Penta 4. Propeller anatomy 5. Duoprop technology 7 PROPELLERS FOR AQUAMATIC. Duoprop for DP280, 290 drives. Propeller guide A PERFECT MATCH A correct choice of propeller is absolutely vital to get the most out of your engine and boat. Their performance decides whether the power produced by your engine and drive

More information

The influence of ship operational parameters on fuel consumption

The influence of ship operational parameters on fuel consumption Scientific Journals Maritime University of Szczecin Zeszyty Naukowe Akademia Morska w Szczecinie 2013, 36(108) z. 1 pp. 2013, 36(108) z. 1 s. ISSN 1733-8670 The influence of ship operational parameters

More information

Propeller Efficiency. Rule of Thumb. David F. Rogers, PhD, ATP

Propeller Efficiency. Rule of Thumb. David F. Rogers, PhD, ATP Propeller Efficiency Rule of Thumb David F. Rogers, PhD, ATP Theoretically the most efficient propeller is a large diameter, slowly turning single blade propeller. Here, think the Osprey or helicopters.

More information

CFD Analysis of a Propeller Flow and Cavitation

CFD Analysis of a Propeller Flow and Cavitation CFD Analysis of a Propeller Flow and Cavitation S. Subhas PG student NITW V F Saji Scientist C N S T L Visakhapatnam S. Ramakrishna GVP College of Engineering (A) Visakhapatnam H. N Das Scientist F N S

More information

Shaft Alignment. Powertrain Vibration

Shaft Alignment. Powertrain Vibration Shaft Alignment and Powertrain Vibration Chris Leontopoulos C1 Shaft Alignment Definition Most shipboard configurations of shafts and bearings are likely to be aligned when some or all of the centrelines

More information

NOMENCLATURE Ω V. ρ P s =P +ρgh. Turbine Output Power Rotor Radius Rotational Speed Free Stream Velocity. Maximum Airfoil Lift Coefficient.

NOMENCLATURE Ω V. ρ P s =P +ρgh. Turbine Output Power Rotor Radius Rotational Speed Free Stream Velocity. Maximum Airfoil Lift Coefficient. Owemes 6, - April. Civitavecchia, Italy. Horizontal Axis Tidal Current Turbine: Numerical and Experimental Investigations D.P. Coiro, U. Maisto, F. Scherillo, S. Melone, F. Grasso Department of Aeronautical

More information

SHIP VIBRATION GUIDANCE NOTES ON. APRIL 2006 (Updated January 2015 see next page)

SHIP VIBRATION GUIDANCE NOTES ON. APRIL 2006 (Updated January 2015 see next page) Guidance Notes on Ship Vibration GUIDANCE NOTES ON SHIP VIBRATION APRIL 2006 (Updated January 2015 see next page) American Bureau of Shipping Incorporated by Act of Legislature of the State of New York

More information

Hybrid shaft generator propulsion system upgrade. Making fixed engine speed history

Hybrid shaft generator propulsion system upgrade. Making fixed engine speed history Hybrid shaft generator propulsion system upgrade Making fixed engine speed history HSG drive Fixed engine speed is history Upgrade to an electric hybrid propulsion system that significantly reduces fuel

More information

Frictional Resistance Calculations on a Ship using CFD

Frictional Resistance Calculations on a Ship using CFD Frictional Resistance Calculations on a Ship using CFD Dunna Sridhar M E Student Marine Engineering A U C E., Visakhapatnam T V K Bhanuprakash Professor Dept. of Marine Engineering A U C E., Visakhapatnam

More information

Performance prediction of a centrifugal pump working in direct and reverse mode using Computational Fluid Dynamics

Performance prediction of a centrifugal pump working in direct and reverse mode using Computational Fluid Dynamics European Association for the Development of Renewable Energies, Environment and Power Quality (EA4EPQ) International Conference on Renewable Energies and Power Quality (ICREPQ 10) Granada (Spain), 23rd

More information

THE NEW INTEGRATED PROPULSION SYSTEM FOR FISHING VESSEL

THE NEW INTEGRATED PROPULSION SYSTEM FOR FISHING VESSEL THE NEW INTEGRATED PROPULSION SYSTEM FOR FISHING VESSEL Fishing continues to be energy-intensive food production method and depends almost completely on internal combustion engines based on oil fuels.

More information

INTEGRATED SYSTEM FOR DATA ACQUISITION AND NUMERICAL ANALYSIS OF THE SHIP RESISTANCE PERFORMANCE IN THE TOWING TANK OF GALAÞI UNIVERSITY

INTEGRATED SYSTEM FOR DATA ACQUISITION AND NUMERICAL ANALYSIS OF THE SHIP RESISTANCE PERFORMANCE IN THE TOWING TANK OF GALAÞI UNIVERSITY INTEGRATED SYSTEM FOR DATA ACQUISITION AND NUMERICAL ANALYSIS OF THE SHIP RESISTANCE PERFORMANCE IN THE TOWING TANK OF GALAÞI UNIVERSITY DAN OBREJA, LEONARD DOMNIªORU, FLORIN PÃCURARU University Dunãrea

More information

Marine Propeller Optimisation - Strategy and Algorithm Development

Marine Propeller Optimisation - Strategy and Algorithm Development THESIS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY Marine Propeller Optimisation - Strategy and Algorithm Development FLORIAN VESTING Department of Shipping and Marine Technology CHALMERS UNIVERSITY OF TECHNOLOGY

More information

3. Resistance of a Ship 3.2 Estimates based on statistical methods

3. Resistance of a Ship 3.2 Estimates based on statistical methods In the preliminary stages of ship design, the resistance coefficient is estimated with approximate methods based on systematic series or statistical regressions to experimental data. A systematic series

More information

24 th ITTC Benchmark Study on Numerical Prediction of Damage Ship Stability in Waves Preliminary Analysis of Results

24 th ITTC Benchmark Study on Numerical Prediction of Damage Ship Stability in Waves Preliminary Analysis of Results th ITTC Benchmark Study on Numerical Prediction of Damage Ship Stability in Waves Preliminary Analysis of Results Apostolos Papanikolaou & Dimitris Spanos National Technical University of Athens- Ship

More information

Aspects of Propeller Developments for a Submarine

Aspects of Propeller Developments for a Submarine First International Symposium on Marine Propulsors smp 09, Trondheim, Norway, June 2009 Aspects of Developments for a Submarine Poul Andersen 1, Jens J. Kappel 2, Eugen Spangenberg 3 1 Dept. of Mechanical

More information

Design and Operation of Fuel Efficient Ships. Jan de Kat Director, Energy Efficiency Operational and Environmental Performance Copenhagen

Design and Operation of Fuel Efficient Ships. Jan de Kat Director, Energy Efficiency Operational and Environmental Performance Copenhagen Design and Operation of Fuel Efficient Ships Jan de Kat Director, Energy Efficiency Operational and Environmental Performance Copenhagen Genova 21 November 2013 Energy efficiency: key issues High fuel

More information

ZF 15 MIV 15 V-drive, direct mount marine transmission.

ZF 15 MIV 15 V-drive, direct mount marine transmission. Marine Propulsion Systems 15 V-drive, direct mount marine transmission. Maximum Input** Duty kw hp Pleasure 55 73 5000 Light 50 67 5000 Medium 46 61 5000 Continuous 40 53 5000 ** Must not be exceeded Description

More information

Relevance of Modern Optimization Methods in Turbo Machinery Applications

Relevance of Modern Optimization Methods in Turbo Machinery Applications Relevance of Modern Optimization Methods in Turbo Machinery Applications - From Analytical Models via Three Dimensional Multidisciplinary Approaches to the Optimization of a Wind Turbine - Prof. Dr. Ing.

More information

SUZUKI Marine Service Seminar

SUZUKI Marine Service Seminar SUZUKI Marine Service Seminar Propellers and their Importance What is your role in Selling Props? What are the key features & benefits of our props? The Propeller The propeller is the core to optimum performance

More information

ZF 12 M Vertical offset, direct mount marine transmission.

ZF 12 M Vertical offset, direct mount marine transmission. Marine Propulsion Systems Vertical offset, direct mount marine transmission. Maximum Input** Duty kw hp Pleasure 55 73 5000 Light 50 67 5000 Medium 46 61 5000 Continuous 40 53 5000 ** Must not be exceeded

More information

The Design & Analysis of a Low NPSH Centrifugal Pump Featuring a Radial Inlet and Axial Inducer Using STAR-CCM+

The Design & Analysis of a Low NPSH Centrifugal Pump Featuring a Radial Inlet and Axial Inducer Using STAR-CCM+ The Design & Analysis of a Low NPSH Centrifugal Pump Featuring a Radial Inlet and Axial Inducer Using STAR-CCM+ Edward M Bennett Travis A Jonas Mechanical Solutions 11 Apollo Drive Whippany, NJ 07981 March

More information

SOME IMPORTANT NAVAL ARCHITECTURAL TERMS February 2009

SOME IMPORTANT NAVAL ARCHITECTURAL TERMS February 2009 Page 1(6) SOME IMPORTANT NAVAL ARCHITECTURAL TERMS February 2009 ITEM A-, B- and C-class divisions EXPLANATION SOLAS has tables for structural fire protection requirement of bulkheads and decks. The requirements

More information

DISPLACEMENT TO SEMI-DISPLACEMENT

DISPLACEMENT TO SEMI-DISPLACEMENT Don t Get the Hump The name van Oossanen is a highly respected one in naval architectural circles. The firm s founder, Piet, devised the appendage that changed the face and location of the America s Cup

More information

Professor Emeritus, Physics Dept., University of Western Ontario, London, Canada,

Professor Emeritus, Physics Dept., University of Western Ontario, London, Canada, SMUGGLER AND PIRATE GO-FAST BOATS J.K.E. Tunaley 1 The boats used by smugglers over the ocean are often capable of high speed and are known as go-fast boats. They are based on the design by Donald Aronow

More information

Development of Environmentally-Friendly Container Carrier efuture 13000C

Development of Environmentally-Friendly Container Carrier efuture 13000C Development of Environmentally-Friendly Container Carrier efuture 13000C MASUKO Akira : Doctor of Engineering, Manager, Ship & Offshore Basic Design Department, IHI Marine United Inc. SAKAUCHI Katsunori

More information

CROR Noise Generation Mechanism #3: Installation Effects (& Quadrupole Noise)

CROR Noise Generation Mechanism #3: Installation Effects (& Quadrupole Noise) CROR Noise Generation Mechanism #3: Installation Effects (& Quadrupole Noise) Arne Stuermer & Jianping Yin Institute of Aerodynamics & Flow Technology DLR Braunschweig Germany 14th CEAS-ASC Workshop October

More information

POWERING THE QUEEN ELIZABETH CLASS AIRCRAFT CARRIERS

POWERING THE QUEEN ELIZABETH CLASS AIRCRAFT CARRIERS I ch dien Power & Propulsion Sub Alliance POWERING THE QUEEN ELIZABETH CLASS AIRCRAFT CARRIERS PRINCE OF W A LES MOD delivery structure Rolls-Royce is proud to be providing a wide range of equipment to

More information

FINE TM /Marine. CFD Suite for Marine Applications. Advanced Development for Better Products. www.numeca.com

FINE TM /Marine. CFD Suite for Marine Applications. Advanced Development for Better Products. www.numeca.com FINE TM /Marine CFD Suite for Marine Applications Advanced Development for Better Products www.numeca.com FINE TM /Marine FINE /Marine is a unique integrated CFD software environment for the simulation

More information

CFD Case Studies in Marine and Offshore Engineering

CFD Case Studies in Marine and Offshore Engineering CFD Case Studies in Marine and Offshore Engineering Milovan Perić CD-adapco, Nürnberg Office www.cd-adapco.com Milovan.Peric@de.cd-adapco.com Introduction CD-adapco software: a brief overview Case studies

More information

New marine propulsion concept with booster motor

New marine propulsion concept with booster motor New marine propulsion concept with booster motor Three US container ships were upgraded at the Hamburg shipyard of Blohm + Voss GmbH by shortening the vessels and installing a new marine propulsion system.

More information

Marine Jet Power, MJP, is a world-leading supplier of waterjet propulsion systems for high-performance applications. Customers with uncompromising

Marine Jet Power, MJP, is a world-leading supplier of waterjet propulsion systems for high-performance applications. Customers with uncompromising Marine Jet Power, MJP, is a world-leading supplier of waterjet propulsion systems for high-performance applications. Customers with uncompromising demands on heavy-duty design and great performance navies,

More information

FAN PROTECTION AGAINST STALLING PHENOMENON

FAN PROTECTION AGAINST STALLING PHENOMENON FAN PROTECTION AGAINST STALLING PHENOMENON Roberto Arias Álvarez 1 Javier Fernández López 2 2 1 ZITRON Technical Director roberto@zitron.com ZITRON Technical Pre Sales Management jfernandez@zitron.com

More information

Unsteady CFD of a Marine Current Turbine using OpenFOAM with Generalised Grid Interface

Unsteady CFD of a Marine Current Turbine using OpenFOAM with Generalised Grid Interface Unsteady CFD of a Marine Current Turbine using OpenFOAM with Generalised Grid Interface Thomas P. Lloyd, Stephen R. Turnock and Victor F. Humphrey Fluid-Structure Interactions Research Group; Institute

More information

Waterjet System Performance and Cavitation Test Procedures

Waterjet System Performance and Cavitation Test Procedures Third International Symposium on Marine Propulsors smp 13, Tasmania, Australia, May 2013 Waterjet System Performance and Cavitation Test Procedures Jie Dang 1, Runwen Liu 2 and Christiaan Pouw 1 1 The

More information

Shaft Generator Systems with PWM Frequency Converter

Shaft Generator Systems with PWM Frequency Converter Energy-saving Power Supply Systems Wärtsilä SAM Electronics Shaft generator being installed Shaft generators onboard ships are driven by the main engine to supply power to the mains. The mains have to

More information

Basic Principles of Ship Propulsion

Basic Principles of Ship Propulsion Basic Principles of Ship Propulsion Contents Introduction...5 Scope of this Paper...5 Chapter 1...6 Ship Definitions and Hull Resistance...6 Ship types...6 A ship s load lines...6 Indication of a ship

More information

Engine Selection Guide Two-stroke MC/MC-C Engines

Engine Selection Guide Two-stroke MC/MC-C Engines Two-stroke MC/MC-C Engines This book describes the general technical features of the MC Programme This is intended as a 'tool' for assistance in the initial stages of a project. As differences may appear

More information

WIND ENERGY SYSTEMS Weeks 12

WIND ENERGY SYSTEMS Weeks 12 ENGG378/948 Sustainable Energy Technologies WIN ENERGY SYSTEMS Weeks Theory of horizontal axis wind turbine (HAWT) Airfoils erivation of Blade Element Momentum Theory Solution procedure Objectives of lecture

More information

Development of Sirocco Fan Featuring Dragonfly Wing Characteristics

Development of Sirocco Fan Featuring Dragonfly Wing Characteristics Transactions of The Japan Institute of Electronics Packaging Vol. 6, No. 1, 2013 [Technical Paper] Development of Sirocco Fan Featuring Dragonfly Wing Characteristics Yui Kumon and Masaki Otsuka Development

More information

AERODYNAMICS. High Gross Weight Low Rotor RPM High Density Altitude Steep or Abrupt Turns T urbulent Air High Airspeed

AERODYNAMICS. High Gross Weight Low Rotor RPM High Density Altitude Steep or Abrupt Turns T urbulent Air High Airspeed AIRFLOW DURING A HOVER IGE v.s. OGE POWER REQUIREMENT The maximum flow velocity in IGE is lower due to ground disruption of the airflow. Additionally, the rotor tip vortices formed are smaller resulting

More information

ZF 301 A. Marine Propulsion Systems

ZF 301 A. Marine Propulsion Systems Marine Propulsion Systems 10 Down angle, direct mount marine transmission. Description Robust design also withstands continuous duty in workboat applications. Fully works tested, reliable and simple to

More information

Platform Technology for Computational Fluid Dynamics Supporting Design of System Products

Platform Technology for Computational Fluid Dynamics Supporting Design of System Products Hitachi Review Vol. 61 (2012), No. 6 244 Platform Technology for Computational Fluid Dynamics Supporting Design of System Products from Power Plants and Industrial Machinery to Home Appliances Shigehisa

More information

THE NEXT REVOLT 18 BATTERY COASTAL TRAFFIC REVOLT IN BRIEF

THE NEXT REVOLT 18 BATTERY COASTAL TRAFFIC REVOLT IN BRIEF 18 BATTERY COASTAL TRAFFIC THE NEXT REVOLT Could present-day technology improve the cost and effectiveness of shortsea shipping while enhancing safety and environmental performance? Yes, it could! Taking

More information

Effect of Propeller on Airplane Dynamics

Effect of Propeller on Airplane Dynamics Effect of Propeller on Airplane Dynamics The propeller creates considerable unfavorable forces that need to be trimmed out to keep the airplane flying in a desirable manner. Many airplanes are rigged to

More information

EXACT MODELING OF TRAILING VORTICITY IN PANEL METHOD FOR MARINE PROPELLER

EXACT MODELING OF TRAILING VORTICITY IN PANEL METHOD FOR MARINE PROPELLER EXACT MODELING OF TRAILING VORTICITY IN PANEL METHOD FOR MARINE PROPELLER Stefano Gaggero, Stefano Brizzolara University of Genoa, Department of Naval Architecture and Marine Technology, Italy SUMMARY

More information

ZF 220 A 10 Down angle, direct mount marine transmission.

ZF 220 A 10 Down angle, direct mount marine transmission. Marine Propulsion Systems 10 Down angle, direct mount marine transmission. Maximum Input** Duty kw hp RPM Pleasure 419 562 4500 Light 394 528 4500 Medium 335 449 4500 Continuous 192 258 3200 ** Must not

More information

The distribution of pressure for fitted bearings of hydrodynamic lubrication under low and high rotation number

The distribution of pressure for fitted bearings of hydrodynamic lubrication under low and high rotation number International Journal of Advanced Science and Research ISSN: 2455-4227, Impact Factor: RJIF 5.2 www.newresearchjournal.com/science Volume ; Issue 5; May 206; Page No. 35-40 The distribution of pressure

More information

CP Propeller Equipment

CP Propeller Equipment Data Sheet for Propeller and Propulsion Plant....................... 27 Instruction Manual................................................. 29 CP Propeller Equipment Contents Page Introduction.......................................................

More information

ANNEX 10. RESOLUTION MEPC.214(63) Adopted on 2 March 2012 2012 GUIDELINES ON SURVEY AND CERTIFICATION OF THE ENERGY EFFICIENCY DESIGN INDEX (EEDI)

ANNEX 10. RESOLUTION MEPC.214(63) Adopted on 2 March 2012 2012 GUIDELINES ON SURVEY AND CERTIFICATION OF THE ENERGY EFFICIENCY DESIGN INDEX (EEDI) Annex 10, page 1 ANNEX 10 RESOLUTION MEPC.214(63) Adopted on 2 March 2012 2012 GUIDELINES ON SURVEY AND CERTIFICATION OF THE ENERGY EFFICIENCY DESIGN INDEX (EEDI) THE MARINE ENVIRONMENT PROTECTION COMMITTEE,

More information

ANSYS Applications in Ocean Science and Engineering

ANSYS Applications in Ocean Science and Engineering ANSYS Applications in Ocean Science and Engineering 1 Marsall Loewenstein Ian Lockley 8/10/2011 Perspective The Universe in One Year concept was inspired by the late Cornell astronomer, Carl Sagan. Sagan

More information

PropCalcPlus Propeller Calculator

PropCalcPlus Propeller Calculator PropCalcPlus Propeller Calculator Enter your data in the blue boxes below. Computed values will display in the yellow boxes. BHP 325 (1) Max RPM 5600 (2) Peak Torque 230 ft-lbs 32 kg-m (3) Not used Peak

More information