Radiative Effects on BoundaryLayer Flow of a Nanofluid on a Continuously Moving or Fixed Permeable Surface


 Alfred Holland
 3 years ago
 Views:
Transcription
1 176 Recent Patents on Mechanical Engineering 01, 5, Radiative Effects on BoundaryLayer Flo of a Nanofluid on a Continuously Moving or Fixed Permeable Surface Ali J. Chamkha a, Mohamed Modather b,c, Saber M.M. ELKabeir b,c and Ahmed M. Rashad*,b a Manufacturing Engineering Department, The Public Authority for Applied, Education and Training, Shueikh 70654, Kuait; b Department of Mathematics, Asan University, Faculty of science, Egypt; c Department of Mathematics, Salman Bin Abdul Aziz University, College of Science and Humanity Studies, AlKharj, KSA Received: May 16, 01; Accepted: July 16, 01; Revised: July 0, 01 Abstract: In recent years, significant patents have been devoted to developing nanotechnology in industry since materials ith sizes of nanometers possess unique physical and chemical properties. Due to recent advances in nanotechnology, a ne class of heat transfer fluids called nanofluids as discovered. A nanofluid is a mixture produced by dispersing metallic nanoparticles in lo thermal conductivity liquids such as ater, oils, lubricants and others to enhance the heat transfer performance. Many patents have been devoted to the methods of preparation of ne nanofluids heat transfer. Nanofluids are no being developed for medical applications, including cancer therapy and safer surgery by cooling. In this paper, a study of a boundary layer flo and heat transfer characteristics of an incompressible nanofluid floing over a permeable uniform heat flux surface moving continuously in the presence of radiation is reported. The Rosseland diffusion approximation is used to describe the radiative heat flux in the energy equation. The resulting system of nonlinear ordinary differential equations are solved numerically using a finite difference method. Numerical results are obtained for the velocity, temperature and nanoparticles volume fraction profiles, as ell as the friction factor, local Nusselt number and local Sherood number for several values of the parameters, namely the velocity ratio parameter, suction/injection parameter, Bronian motion parameter, thermophoresis parameter and radiation parameter. It is found that an increase in either of the Bronian motion parameter or the thermophoresis parameter leads to reductions in the local Nusselt number and the local Sherood number. In addition, increasing either of the suction/injection parameter or the radiation parameter causes enhancements in both the local Nusselt number and the local Sherood number. Keyords: Moving surface, nanofluid, radiation effect, suction/injection. 1. INTRODUCTION The study of convective heat transfer of nanofluids is gaining a lot of attention. Nanofluids have many applications in the industries since materials of nanometer size have unique physical and chemical properties. Nanofluids are solidliquid composite materials consisting of solid nanoparticles or nanofibers ith sizes typically of 1100nm suspended in liquid. Recently, nanofluids have attracted a great interest because of reports of significant enhancement in their thermal properties. For example, a small amount (< 1% volume fraction of Cu nanoparticles or carbon nanotubes dispersed in ethylene glycol or oil is reported to increase the inherently poor thermal conductivity of the liquid by 40% and 150%, respectively [1, ]. Conventional particleliquid suspensions require high concentration (>10% of particles to achieve such enhancement. Hoever, problems of rheology and stability are amplified at high concentration, precluding the idespread use of conventional slurries as heat transfer fluids. In some cases, the observed enhancement in thermal conductivity of nanofluids is orders of magnitude larger than predicted by ellestablished theories. Other perplexing results in this rapidly evolving field include a *Address correspondence to this author at the Department of Mathematics, Asan University, Faculty of Science, Egypt; Tel: ; Fax: ; surprisingly strong temperature dependence of the thermal conductivity [3] and a threefold higher critical heat flux compared ith the base fluids [4, 5]. These enhanced thermal properties are not merely of academic interest. If confirmed and found consistent, they ould make nanofluids promising for application in thermal management. Furthermore, suspensions of metal nanoparticles are also being developed for other purposes, such as medical applications including cancer therapy. The interdisciplinary nature of nanofluid research presents a great opportunity for exploration and discovery at the frontiers of nanotechnology. Kuznetsov and Nield [6] have also studied the classical problem of free convection boundary layer flo of a viscous and incompressible fluid (Netonian fluid past a vertical flat plate to the case of nanofluids. Khan and Pop [7] analyzed the development of the steady boundary layer flo, heat transfer and nanoparticle fraction over a stretching surface in a nanofluid. Bachok et al. [8] have investigated the steady boundarylayer flo of a nanofluid past a moving semiinfinite flat plate in a uniform free Stream. Syakila and Pop [9] studied the steady mixed convection boundary layer flo past a vertical flat plate embedded in a porous medium filled ith nanofluids using different types of nanoparticles. Application of nanofluids for heat transfer enhancement of separated flos encountered in a backard facing step X/1 $ Bentham Science Publishers
2 BoundaryLayer Flo of Nanofluid on Continuously Moving Permeable Surface Recent Patents on Mechanical Engineering 01, Vol. 5, No presented by AbuNada [10]. Duangthongsuk and Wongises [11] analyzed the effect of thermophysical properties models on the predicting of the convective heat transfer coefficient for lo concentration nanofluid. A similarity analysis for the problem of a steady boundarylayer flo of a nanofluid on an isothermal stretching circular cylindrical surface is presented by Gorla et al. [1]. Gorla et al. [13] have also studied mixed convective boundary layer flo over a vertical edge embedded in a porous medium saturated ith a nanofluid. Noghrehabadi et al. [14] studied effect of partial slip boundary condition on the flo and heat transfer of nanofluids past a stretching sheet ith prescribed constant all temperature. The characteristics of flo and heat transfer of a viscous and incompressible fluid over flexed or continuously moving flat surfaces in a moving or a quiescent fluid are ell understood. These flos occur in many manufacturing processes in modern industry, such as hot rolling, hot extrusion, ire draing and continuous casting. For example, in many metallurgical processes such as draing of continuous filaments through quiescent fluids and annealing and tinning of copper ires, the properties of the end product depends greatly on the rare of cooling involved in these processes. Sakiadis [15] as the first one to analyze the boundary layer flo on continuous surfaces. Crane [16] obtained an exact solution the boundary layer flo of Netonian fluid caused by the stretching of an elastic sheet moving in its on plane linearly. ElKabeir [17] studied the interaction of forced convection and thermal radiation during the flo of a surface moving continuously in a floing stream of micropolar fluid ith variable viscosity. ElKabeir et al. [18] discussed a similarity analysis for the problem of the steady boundarylayer flo of a micropolar fluid on a continuous moving permeable surface ith uniform heat flux. One of the first related patents regarding the development of nanofluids as that by Choi and Eastman [19] ho invented an apparatus and method for enhancing the heat transfer in liquids namely, ater, ethylene glycol and oil. The method involves dispersing nanoparticles of copper, copper oxide and aluminum oxide in these liquids. Li et al. [0] invented a onestep method for preparing nanofluids consisting of metal oxide nanoparticles dispersed in oily fluids such as lubricant oils. A more recent related patent is that of Zhang and Lockood [1] on enhancing the thermal conductivity of fluids using high thermal conductivity graphite nanoparticles and carbon nanotubes. Lockood et al. [] invented a method for gear oil composition containing nanoparticles. Hajikata et al. [3] invented a heat transport nanofluid important for heat exchanger thermal energy transfer. This nanofluid includes a solvent, surfacecoated particles together ith organic components dispersed in the solvent. Hong and Wensel [4] invented a nanofluid that contains carbon nanoparticles, metal oxide nanoparticles and a surfactant in a thermal transfer fluid. Their invention relates to processes for producing such a nanofluid ith enhanced thermal conductive properties. Hayes and McCants [5] recently invented a nanofluid for thermal management systems in hich they used a base liquid ith zinc oxide nanoparticles at a concentration of of about 1% to about 5% by volume. Cardenas et al. [6] invented special nanofluids and methods of use for drilling and completion fluids. These fluids containing nanomaterials, such as carbon nanotubes, meet the required rheological and filtration properties for application in challenging HPHT drilling and completions operations. We present here a similarity analysis for the problem of steady boundarylayer flo of a nanofluid on a continuous moving permeable uniform heat flux surface in the presence of the radiation effect. The development of the velocity, temperature and nanoparticles volume fraction profiles distributions have been illustrated for several values of nanofluid parameters, velocity ratio, suction/injection parameters and radiation parameter.. ANALYSIS Consider a flat surface moving at a constant velocity u in a parallel direction to a free stream of a nanofluid of uniform velocity u. Either the surface velocity or the freestream velocity may be zero but not both at the same time. The physical properties of the fluid are assumed to be constant. Under such condition, the governing equations of the steady, laminar boundarylayer flo on the moving surface are given by (see, ElKabeir et al. [18]: u v + = 0 x y u u u u + v = ( x y y T T T 1 q r u + v = x y y C p y (3 T C DT T + DB + ( y y T y C C C DT T u + v = DB + (4 x y y T y In the above equations, u, v, T and C are the x and y components of fluid velocity, temperature and nanoparticles volume fraction, respectively.,,, q r, D B and D T are the thermal diffusivity, density of ambient fluid, nanofluid heat capacity ratio, heat flux in the ydirection, Bronian diffusion coefficient, and the thermophoretic diffusion coefficient, respectively. The corresponding initial and boundary conditions for this problem can be ritten as: T q C m u =± u, v = v, =, =, at y = 0, y k y DB u u, T T, C C as y (5 The boundary condition of u = u in (5 represents the case of a plane surface moving in parallel to the free stream and q and m represent the all heat and mass fluxes, respectively. To analyze the effect of both the moving and the free stream on the boundarylayer flo, e propose a ne similarly coordinate and a dimensionless stream function y = (Re, x (Re f = (6 (1
3 178 Recent Patents on Mechanical Engineering 01, Vol. 5, No. 3 Chamkha et al. hich are the combinations of the traditional ones:, y Re f B = B = (7 Re x for the Blasius problem (stationary all and uniform free stream velocity and f, y = = Re (8 s s Re x from the Sakiadis (uniformly moving all ith stagnant free stream problem. The Reynolds numbers are defined as: u x ux Re =, Re = (9 A velocity ratio parameter is defined as u u 1 Re 1 = = (1 + = (1 + (10 u + u u Re Note that form the Blasius problem u = 0, therefore = 0. On the other hand, for the Sakiadis problem u = 0 and thus = 1. In addition, e also define dimensionless temperature and concentration function as T T C C =, = (11 qx / (Re mx / (Re and the radiation * 4 4 T q r = * 3k y T = T + 4 T( T T + 6 T ( T T +... ( T + 4TT 3 * qr 16T T = * y 3k y Using the transformation variables defined in equations (61, the governing transformed equations may be ritten as: 1 f + ff = 0 ( (1 + Rd + f + Nb + Nt = 0 Pr 3 ( Nt f = 0 Le Le Nb (15 The transformed initial and boundary conditions become: f (0 = f, f (0 = ±, (0 = 1, (0 = 1, (16 f ( = 1, ( = ( = 0 here Eq. (1 is identically satisfied. In Eqs. (1316, a prime indicates differentiation ith respect to and the parameters Dq T (Re Nt = T( u + u * 3 4 T R d = *, Pr =, Le k k DBm (Re, Nb =, ( u + u (Re f = v. ( u + u (17 =, D Here, Pr, Rd, f, Le, Nb and Nt denote the Prandtl number, the radiation parameter, suction/injection parameter, the Leis number, the Bronian motion parameter and the thermophoresis parameter respectively. It is important to note that this boundary value problem reduces to the classical problem of flo and heat and mass transfer due to a the Blasius problem hen Nb and Nt are zero. Most nanofluids examined to date have large values for the Leis number Le > 1 (see Nield and Kuznetsov [7]. For ater nanofluids at room temperature ith nanoparticles of nm diameters, the Bronian diffusion coefficient D B ranges from to m  /s. Furthermore, the ratio of the Bronian diffusivity coefficient to the thermophoresis coefficient for particles ith diameters of nm can be varied in the ranges of  for alumina, and from to 0 for copper nanoparticles (see Buongiorno [8] for details. Hence, the variation of the nondimensional parameters of nanofluids in the present study is considered to vary in the mentioned range. Of special significance for this type of flo and heat transfer situation are the local skinfriction coefficient, local Nusselt number and the local Sherood number. These physical parameters can be defined in dimensionless form as: 3/ Cf Re = (1 f (0, (18 3/ Cf Re = f (0 4 (1 + Rd Nu /Re 3 x = (19 (0 Sh /Re = x (0 ( RESULTS AND DISCUSSIONS In order to get a clear insight of the physical problem, numerical results are displayed ith the help of graphical and tabulated illustrations. The system of equations (1315 ith the boundary conditions (16 ere solved numerically by means of an efficient, iterative, tridiagonal implicit finitedifference method discussed previously by Blottner [9]. Since the changes in the dependent variables are large in the immediate vicinity of the plate hile these changes decrease greatly as the distance aay from the plate increases, variable step sizes in the direction ere used. The used initial step size in the direction as 1 = 01 and the groth factor as K = 375 such that n = K n1. This indicated that the edge of the boundary layer = 35. The convergence criterion used as based on the relative difference beteen the current and the previous iterations hich as set to 105 in the present ork. It is possible to compare the results obtained by this numerical method ith the previously published ork of ElKabeir et al. [18]. Table 1 shos that excellent agreement beteen the results exists. This lends confidence in the numerical results to be reported subsequently. Computations ere carried out for various values of parameters at Pr = 0.7 and Le = 10. The results of this parametric study are shon in Figs. (15.
4 BoundaryLayer Flo of Nanofluid on Continuously Moving Permeable Surface Recent Patents on Mechanical Engineering 01, Vol. 5, No Table 1. Comparison of Skin Friction f (0 for Various Values of Velocity Ratio. ELKabeir et al. [18] Present Results Figures 4 display the effect of velocity ratio on the velocity, temperature and volume fraction profiles, respectively. It can be seen that, the velocity of the fluid increases as velocity ratio increases in cases < 0.5 and decreases in case > 0.5, on the other hand the temperature of the fluid increases as velocity ratio increases, hile nanoparticle volume fraction decreases as velocity ratio increases. Figures 5 & 6 present the effect of thermophoresis parameter N t and Bronian motion parameter N b on the temperature and nanoparticle volume fraction, respectively. It can be seen that, temperature and nanoparticle volume fraction of the fluid increase as thermophoresis parameter N t and Bronian motion parameter N b increase. 6 Fig. (1. Physical model and coordinates system. f'( Nb=0.3,Nt=0.3,,,, = =0. = = = = Fig. (. Velocity profiles ith various values of velocity ratio parameter. θ( ,0.,,,, Nb=0.3 Nt=0.3 = Fig. (3. Temperature profiles ith various values of velocity ratio parameter. Figures 7 & 8 display the effect of thermophoresis parameter N t and Bronian motion parameter N b on local Nusselt number and local Sherood number respectively. It can be seen that the thermophoresis parameter Nt appears in the
5 180 Recent Patents on Mechanical Engineering 01, Vol. 5, No. 3 Chamkha et al ,0.,,,, =,,, Nb,Nt=0.1,0.3,0.5,0.7 φ( Nb=0.3 Nt= = (1+4 /3/θ( Fig. (4. Volume fraction profiles ith various values of velocity ratio parameter. Fig. (7. Local Nusselt number ith various values of Nb and Nt =,,, Nb,Nt=0.1,0.3,0.5, θ( 3 1/φ(0 0.9 =0.5 1 Nb,Nt=0.1,0.3,0.5,0.7,0.9 = Fig. (5. Temperature profiles ith various values of Nb and Nt. φ( Nb,Nt=0.1,0.3,0.5,0.7,0.9 =0.5 = Fig. (6. Volume fraction profiles ith various values of Nb and Nt. thermal and concentration boundary layer equations. As e note, it is coupled ith the temperature function and plays a strong role in determining the diffusion of heat and nanoparticles concentration in the boundary layer. Moreover, In nanofluid systems, oing to the size of the nanoparticles, Fig. (8. Local Sherood number ith various values of Nb and Nt. θ( Fig. (9. Temperature profiles ith various values of and. Bronian motion takes place, and this can enhance the heat transfer properties. This is due to the fact that the Bronian diffusion promotes heat conduction. The nanoparticles increase the surface area for heat transfer. A nanofluid is a to phase fluid here the nanoparticles move randomly and increase the energy exchange rates. Hoever, the Bronian motion reduces nanoparticles diffusion. The increase in the =0.,0.1,,0.1,0. =.0 =0.5 Nb=0.3 Nt=0.3
6 BoundaryLayer Flo of Nanofluid on Continuously Moving Permeable Surface Recent Patents on Mechanical Engineering 01, Vol. 5, No local Sherood number as Nb changes is relatively small. Therefore, as indicated before, increasing the Bronian motion parameter N b and the thermophoresis parameter N t cause increasing the temperature and volume fraction profiles. This yields reduction in the local Nusselt number and local Sherood number. Figures 9 & 10 sho the representative of temperature and nanoparticles volume fraction profiles for different values of suction/injection and radiation R parameters, respectively. It can be observed that the increasing the value of suction/injection parameter causes decreasing in both temperature and volume fraction profiles, hile radiation R leads to a significant change in temperature and slight change in volume fraction, as radiation parameter increases the temperature of the fluid increases and volume fraction decreases. Cf Re =,Nb=0.3,Nt=0.3,, =0.,0.1,,0.1, Fig. (11. Local skinfriction coefficient ith various values of. C Re φ( =0.,0.1,,0.1,0. =.0 =0.5 Nb=0.3 Nt= (1+4 /3/θ( =,Nb=0.3,Nt=0.3,, =0.,0.1,,0.1,0. Fig. (10. Volume fraction profiles ith various values of and. Figure 11 displays the effect of velocity ratio and suction/injection parameters on the values of local skin friction coefficient, It can be seen that, local skin friction decreases as velocity ratio increases in cases < 0.5 and increases in case > 0.5, hile local skin friction coefficient increases as suction/injection parameter increases. Finally, Figs. (115 sho the effect of suction/injection and radiation parameters on local Nusselt number and local Sherood number, respectively. It can be seen that increasing the value of suction/injection and radiation parameters led to increasing in both local Nusselt number and local Sherood number. 4. CURRENT & FUTURE DEVELOPMENTS The objective of the present ork as to study the effect of thermal radiation on boundary layer flo of an incompressible nanofluid floing over a permeable uniform heat flux surface moving continuously. Some related patents for the preparation of heat transfer nanofluids are highlighted. The model used for the nanofluid incorporated the effects of Bronian motion and thermophoresis. The governing boundary layer equations ere solved numerically using an efficient, implicit finitedifference method. The local skinfriction coefficient, local Nusselt number and the local Fig. (1. Local Nusselt number ith various values of. 1/φ( =,Nb=0.3,Nt=0.3,, =0.,0.1,,0.1, Fig. (13. Local Sherood number ith various values of. Sherood number as ell as the temperature, concentration and velocity distributions for various values of the velocity ratio, suction/injection parameter, radiation parameter and nanofluid parameters ere illustrated graphically and discussed. Based on the obtained results of the above numerical investigation, the folloing conclusions could be dran:
7 18 Recent Patents on Mechanical Engineering 01, Vol. 5, No. 3 Chamkha et al. (1+4 /3/θ(0 Fig. (14. Local Nusselt number ith various values of. 1/φ( ,,.0, Nb=0.3,Nt=0.3,,, Nb=0.3,Nt=0.3,,, 0. Fig. (15. Local Sherood number ith various values of. 1 It as found that both of the temperature of the fluid and the nanoparticles volume fraction increase as either of the thermophoresis parameter or the Bronian motion parameter increased.  Increasing the suction/injection parameter caused reductionds in both the temperature and nanoparticles volume fraction profiles. On the other hand, increasing the thermal radiation parameter led to a significant change in temperature and a slight change in the nanoparticles volume fraction. 3 The fluid temperature increased hile the nanoparticles volume fraction decreased as the velocity ratio increased. 4 Increases in either of the Bronian motion parameter or the thermophoresis parameter led to reductions in the local Nusselt and Sherood numbers. 5 As either of the suction/injection parameter or the radiation parameter increased, both the local Nusselt number and the local Sherood number enhanced. CONFLICT OF INTEREST The authors confirm that this article content has no conflicts of interest.,,.0,3.0 ACKNOWLEDGEMENTS The authors are thankful to the revieers for their positive comments and their valuable suggestions hich led to definite improvements in the paper. REFERENCES [1] Eastman JA, Choi SUS, Li S, Yu W, Thompson LJ. Anomalously increased effective thermal conductivities containing copper nanoparticles. Appl Phys Lett 001; 78: [] Choi SUS, Zhang ZG, Yu W, Lockood FE, Grulke EA. Anomalous thermal conductivity enhancement on nanotube suspensions. Appl Phys Lett 001; 79: 54. [3] Patel HE, Das SK, Sundararajan T, Sreekumaran A, George B, Pradeep T. Thermal conductivities of naked and monolayer protected metal nanoparticle based nanofluids manifestation of anomalous enhancement and chemical effects. Appl Phys Lett 003; 83: [4] You SM, Kim JH, Kim KH. Effect of nanoparticles on critical heat flux oater in pool boiling heat transfer. Appl Phys Lett 003; 83: [5] Vassallo P, Kumar R, D'Amico S. Pool boiling heat transfer experiments in silica ater nonofluids. Int J Heat Mass Transfer 004; 47: [6] Kuznetsov AV, Nield DA. Natural convective boundarylayer flo of a nanofluid past a vertical plate. Int J Therm Sci 010; 49: [7] Khan WA, Pop I. Boundary layer flo of nanofluid past a stretching sheet. Int J Heat Mass Transfer 010; 53: [8] Bachok N, Ishak A, Pop I. Boundary layer flo of nanofluid over moving surface in a floing fluid. Int J Therm Sci 010; 49: [9] Syakila A, Pop I. Mixed convection boundary layer flo from a vertical flat plate embedded in a porous medium filled ith nanofluids. Int Comm Heat Mass Transfer 010; 37: [10] AbuNada E. Application of nanofluids for heat transfer enhancement of separated flos encountered in a backard facing step. Int J Heat Fluid Flo 008; 9: 49. [11] Duangthongsuk W, Wongises S. Effect of thermophysical properties models on the predicting of the convective heat transfer coefficient for lo concentration nanofluid. Int Comm Heat Mass Transfer 008; 35: [1] Gorla RSR, ELKabeir SMM, Rashad AM. Boundarylayer heat transfer from a stretching circular cylinder in a nanofluid. J Thermophys Heat Transfer 011; 5(1: [13] Gorla RSR, Chamkha AJ, Rashad AM. Mixed convective boundary layer flo over a vertical edge embedded in a porous medium saturated ith a nanofluid: Natural convection dominated regime. Nanoscale Res Lett 011; 6: 19. [14] Noghrehabadi A, Pourrajab R, Ghalambaz M. Effect of partial slip boundary condition on the flo and heat transfer of nanofluids past stretching sheet prescribed constant all temperature. Int J Therm Sciences 01; 54: [15] Sakiadis BC. Boundarylayer behavior on a continuous solid surface: IIThe boundary layer on a continuous flat surface. AIChE J 1961; 7: 15. [16] Crane LJ. Flo past a stretching plate. ZAMP 1970; 1: [17] ELKabeir SMM. Radiative effects on forced convection flos in micropolar fluids ith variable viscosity. Can J Phys 004; 8: [18] ELKabeir SMM, Rashad AM, Gorla RSR. Heat transfer in a micropolar fluid flo past a permeable continuous moving surface. ZAMM 011; 9(5: [19] Choi, S.U.S., Eastman, J.A. Enhanced heat transfer using nanofluids. US6175 (001. [0] Li C, Young M, Shih R, Wen M, Chang M. Process for preparing nanofluids ith rotating packed bed reactor. TW63675 (006. [1] Zhang, Z., Lockood, F.E. Enhancing thermal conductivity of fluids ith graphite nanoparticles and carbon nanotube. US (008. [] Lockood, F.E., Zhang, Z., Wu, G., Smith, T.R. Gear oil composition containing nanomaterial. US (008.
8 BoundaryLayer Flo of Nanofluid on Continuously Moving Permeable Surface Recent Patents on Mechanical Engineering 01, Vol. 5, No [3] Hijikata, Y., Torigo, E., Kaaguchi, T., Morishita, T. Heat transport fluid, heat transport structure, and heat transport method. US (008. [4] Hong, H., Wensel, J. Carbon nanoparticlecontaining hydrophilic nanofluid ith enhanced thermal conductivity. US (011. [5] Hayes, A.M., McCants, D.A. Nanofluids for thermal management systems. US (01. [6] Quintero, L., Cardenas, A.E., Clark, D.E. Nanofluids and methods of use for drilling and completion fluids. US (01. [7] Nield DA, Kuznetsov AV. Thermal instability in a porous medium layer saturated by a nanofluid. Int J Heat Mass Transfer 009; 5: [8] Buongiorno J. Convective transport in nanofluids. J Heat TransT, ASME 006;18: [9] Blottner FG. Finitedifference methods of solution of the boundarylayer equations. AIAA J 1970; 8:
Basic Equations, Boundary Conditions and Dimensionless Parameters
Chapter 2 Basic Equations, Boundary Conditions and Dimensionless Parameters In the foregoing chapter, many basic concepts related to the present investigation and the associated literature survey were
More informationMagnetohydrodynamic free convection between vertical parallel porous plates in the presence of induced magnetic field
DOI 1.1186/s464151971 RESEARCH Open Access Magnetohydrodynamic free convection between vertical parallel porous plates in the presence of induced magnetic field Sarveshanand 1,2* and A K Singh 2 *Correspondence:
More informationInvestigation on Enhancement of Heat Transfer Using Different Type of Nanofluids Review
Review Paper Investigation on Enhancement of Heat Transfer Using Different Type of Nanofluids Review Authors 1 Ramesh Bhoi *, 2 Dinesh Dabhi, 3 Chetan Jaiswal Address for Correspondence: 1, 2 Mechanical
More informationLaminar Flow and Heat Transfer of HerschelBulkley Fluids in a Rectangular Duct; FiniteElement Analysis
Tamkang Journal of Science and Engineering, Vol. 12, No. 1, pp. 99 107 (2009) 99 Laminar Flow and Heat Transfer of HerschelBulkley Fluids in a Rectangular Duct; FiniteElement Analysis M. E. SayedAhmed
More informationHall Effects on Steady MHD Heat and Mass Transfer Free Convection Flow along an Inclined Stretching Sheet with Suction and Heat Generation
Available Online Publications J. Sci. Res. 6 (3), 457466 (4) JOURNAL OF SCIENTIFIC RESEARCH.banglajol.info/index.php/JSR Hall Effects on Steady MHD Heat and Mass Transfer Free Convection Flo along an
More informationCFD Study of the Heat Pipes with Water Nanoparticles Mixture
CFD Study of the Heat Pipes with Water Nanoparticles Mixture Gabriela HUMINIC 1, Angel HUMINIC 1 1 Department of Thermodynamics and Fluid Mechanics Transilvania University of Brasov, Romania Abstract:
More informationHeat and Mass Transfer in MHD Boundary Layer Flow past an Inclined Plate with Viscous Dissipation in Porous Medium
International Journal of Scientific & Engineering Research, Volume 3, Issue 6, June0 ISSN 9558 Heat and Mass Transfer in MHD Boundary Layer Flo past an Inclined Plate ith Viscous Dissipation in Porous
More informationModule 2 : Convection. Lecture 20a : Illustrative examples
Module 2 : Convection Lecture 20a : Illustrative examples Objectives In this class: Examples will be taken where the concepts discussed for heat transfer for tubular geometries in earlier classes will
More informationA Guide to Calculate Convection Coefficients for Thermal Problems Application Note
A Guide to Calculate Convection Coefficients for Thermal Problems Application Note Keywords: Thermal analysis, convection coefficients, computational fluid dynamics, free convection, forced convection.
More informationFundamentals of Heat and Mass Transfer
2008 AGIInformation Management Consultants May be used for personal purporses only or by libraries associated to dandelon.com network. SIXTH EDITION Fundamentals of Heat and Mass Transfer FRANK P. INCROPERA
More informationTransient Natural Convection Heat Transfer of Al 2 O 3 Water Nanofluid in Enclosure: A Numerical Study
International Refereed Journal of Engineering and Science (IRJES) ISSN (Online) 319183X, (Print) 319181 Volume 3, Issue 3(March 014), PP.4150 Transient Natural Convection Heat Transfer of Al O 3 Water
More informationRavi Kumar Singh*, K. B. Sahu**, Thakur Debasis Mishra***
Ravi Kumar Singh, K. B. Sahu, Thakur Debasis Mishra / International Journal of Engineering Research and Applications (IJERA) ISSN: 4896 www.ijera.com Vol. 3, Issue 3, MayJun 3, pp.76677 Analysis of
More informationNatural Convection. Buoyancy force
Natural Convection In natural convection, the fluid motion occurs by natural means such as buoyancy. Since the fluid velocity associated with natural convection is relatively low, the heat transfer coefficient
More informationMHD effects on natural convection laminar flow from a horizontal circular cylinder in presence of radiation
RESEARCH Revista Mexicana de Física 61 (2015) 450 457 NOVEMBERDECEMBER 2015 MHD effects on natural convection laminar flow from a horizontal circular cylinder in presence of radiation Tariq Javed, Abid
More informationEffect of Aspect Ratio on Laminar Natural Convection in Partially Heated Enclosure
Universal Journal of Mechanical Engineering (1): 833, 014 DOI: 10.13189/ujme.014.00104 http://www.hrpub.org Effect of Aspect Ratio on Laminar Natural Convection in Partially Heated Enclosure Alireza Falahat
More informationNanofluid Heat TransferA Review
International Journal of Engineering and Technology Volume 3 No. 2, February, 2013 Nanofluid Heat TransferA Review Chidanand K Mangrulkar,Vilayatrai M Kriplani Mechanical Engineering Department, G.H.Raisoni
More informationArticle information: Users who downloaded this Article also downloaded: *
International Journal of Numerical Methods for Heat & Fluid Flow Emerald Article: Heat and mass transfer from truncated cones with variable wall temperature and concentration in the presence of chemical
More informationIntegration of a fin experiment into the undergraduate heat transfer laboratory
Integration of a fin experiment into the undergraduate heat transfer laboratory H. I. AbuMulaweh Mechanical Engineering Department, Purdue University at Fort Wayne, Fort Wayne, IN 46805, USA Email: mulaweh@engr.ipfw.edu
More informationMHD boundary layer flow of a nonnewtonian powerlaw fluid on a moving flat plate
Available online at www.pelagiaresearchlibrary.com Advances in Applied Science Research, 202, 3 (3):47248 ISSN: 0976860 CODEN (USA): AASRFC MHD boundary layer flow of a nonnewtonian powerlaw fluid
More informationTWODIMENSIONAL FINITE ELEMENT ANALYSIS OF FORCED CONVECTION FLOW AND HEAT TRANSFER IN A LAMINAR CHANNEL FLOW
TWODIMENSIONAL FINITE ELEMENT ANALYSIS OF FORCED CONVECTION FLOW AND HEAT TRANSFER IN A LAMINAR CHANNEL FLOW Rajesh Khatri 1, 1 M.Tech Scholar, Department of Mechanical Engineering, S.A.T.I., vidisha
More informationIntroduction to Fluid Mechanics. Chapter 9 External Incompressible Viscous Flow. Pritchard
Introduction to Fluid Mechanics Chapter 9 External Incompressible Viscous Flow Main Topics The BoundaryLayer Concept BoundaryLayer Thicknesses Laminar FlatPlate Boundary Layer: Exact Solution Momentum
More informationHeat Transfer Prof. Dr. Ale Kumar Ghosal Department of Chemical Engineering Indian Institute of Technology, Guwahati
Heat Transfer Prof. Dr. Ale Kumar Ghosal Department of Chemical Engineering Indian Institute of Technology, Guwahati Module No. # 04 Convective Heat Transfer Lecture No. # 03 Heat Transfer Correlation
More informationME 144: Heat Transfer Convection Relations for External Flows. J. M. Meyers
ME 144: Heat Transfer Convection Relations for External Flows Empirical Correlations Generally, convection correlations for external flows are determined experimentally using controlled lab conditions
More informationHeat Transfer From A Heated Vertical Plate
Heat Transfer From A Heated Vertical Plate Mechanical and Environmental Engineering Laboratory Department of Mechanical and Aerospace Engineering University of California at San Diego La Jolla, California
More informationEntrance Conditions. Chapter 8. Islamic Azad University
Chapter 8 Convection: Internal Flow Islamic Azad University Karaj Branch Entrance Conditions Must distinguish between entrance and fully developed regions. Hydrodynamic Effects: Assume laminar flow with
More informationExperimental Study On Heat Transfer Enhancement In A Circular Tube Fitted With U Cut And V Cut Twisted Tape Insert
Experimental Study On Heat Transfer Enhancement In A Circular Tube Fitted With U Cut And V Cut Twisted Tape Insert Premkumar M Abstract Experimental investigation of heat transfer and Reynolds number
More informationHEAT TRANSFER ANALYSIS IN A 3D SQUARE CHANNEL LAMINAR FLOW WITH USING BAFFLES 1 Vikram Bishnoi
HEAT TRANSFER ANALYSIS IN A 3D SQUARE CHANNEL LAMINAR FLOW WITH USING BAFFLES 1 Vikram Bishnoi 2 Rajesh Dudi 1 Scholar and 2 Assistant Professor,Department of Mechanical Engineering, OITM, Hisar (Haryana)
More informationLecture 6  Boundary Conditions. Applied Computational Fluid Dynamics
Lecture 6  Boundary Conditions Applied Computational Fluid Dynamics Instructor: André Bakker http://www.bakker.org André Bakker (20022006) Fluent Inc. (2002) 1 Outline Overview. Inlet and outlet boundaries.
More informationAvailable at http://pvamu.edu/aam Appl. Appl. Math. ISSN: 19329466. Vol. 9, Issue 2 (December 2014), pp. 553572
Available at http://pvamu.edu/aam Appl. Appl. Math. ISSN: 939466 Vol. 9, Issue (December 04), pp. 55357 Applications and Applied Mathematics: An International Journal (AAM) Scaling Group Analysis on
More informationDepartment of Chemical Engineering, National Institute of Technology, Tiruchirappalli 620 015, Tamil Nadu, India
Experimental Thermal and Fluid Science 32 (2007) 92 97 www.elsevier.com/locate/etfs Studies on heat transfer and friction factor characteristics of laminar flow through a circular tube fitted with right
More informationEffective parameters on second law analysis for semicircular ducts in laminar flow and constant wall heat flux B
International Communications in Heat and Mass Transfer 32 (2005) 266 274 www.elsevier.com/locate/ichmt Effective parameters on second law analysis for semicircular ducts in laminar flow and constant wall
More informationInternational Journal of Latest Research in Science and Technology Volume 4, Issue 2: Page No.161166, MarchApril 2015
International Journal of Latest Research in Science and Technology Volume 4, Issue 2: Page No.161166, MarchApril 2015 http://www.mnkjournals.com/ijlrst.htm ISSN (Online):22785299 EXPERIMENTAL STUDY
More informationBlasius solution. Chapter 19. 19.1 Boundary layer over a semiinfinite flat plate
Chapter 19 Blasius solution 191 Boundary layer over a semiinfinite flat plate Let us consider a uniform and stationary flow impinging tangentially upon a vertical flat plate of semiinfinite length Fig
More informationSecond Law Analysis of Parallel Plate Ducts with Span Wise Periodic Triangular Corrugations at one Wall
INTERNATIONAL JOURNAL OF MULTIDISCILINARY SCIENCES AND ENGINEERING, VOL., NO. 7, OCTOBER 011 Second La Analysis of arallel late Ducts it Span Wise eriodic Triangular Corrugations at one Wall Alireza Falaat
More information1. (Problem 8.23 in the Book)
1. (Problem 8.23 in the Book) SOLUTION Schematic An experimental nuclear core simulation apparatus consists of a long thinwalled metallic tube of diameter D and length L, which is electrically heated
More informationFREESTUDY HEAT TRANSFER TUTORIAL 3 ADVANCED STUDIES
FREESTUDY HEAT TRANSFER TUTORIAL ADVANCED STUDIES This is the third tutorial in the series on heat transfer and covers some of the advanced theory of convection. The tutorials are designed to bring the
More informationIterative calculation of the heat transfer coefficient
Iterative calculation of the heat transfer coefficient D.Roncati Progettazione Ottica Roncati, via Panfilio, 17 44121 Ferrara Aim The plate temperature of a cooling heat sink is an important parameter
More informationB.K. Assilbekov*, U.K. Zhapbasbayev*, A.B. Zolotukhin** MODELING OF TWO PHASE FLUID FILTRATION IN RESERVOIR WITH HIGH PERMEABILITY COLLECTOR
WIERTNICTWO NAFTA GAZ TOM 26 ZESZYT 1 2 2009 B.K. Assilbekov*, U.K. Zhapbasbayev*, A.B. Zolotukhin** MODELING OF TWO PHASE FLUID FILTRATION IN RESERVOIR WITH HIGH PERMEABILITY COLLECTOR 1. INTRODUCTION
More informationFree Convection Film Flows and Heat Transfer
Deyi Shang Free Convection Film Flows and Heat Transfer With 109 Figures and 69 Tables < J Springer Contents 1 Introduction 1 1.1 Scope 1 1.2 Application Backgrounds 1 1.3 Previous Developments 2 1.3.1
More informationChapter 8 Steady Incompressible Flow in Pressure Conduits
Chapter 8 Steady Incompressible Flow in Pressure Conduits Outline 8.1 Laminar Flow and turbulent flow Reynolds Experiment 8.2 Reynolds number 8.3 Hydraulic Radius 8.4 Friction Head Loss in Conduits of
More informationNUMERICAL ANALYSIS OF THE EFFECTS OF WIND ON BUILDING STRUCTURES
Vol. XX 2012 No. 4 28 34 J. ŠIMIČEK O. HUBOVÁ NUMERICAL ANALYSIS OF THE EFFECTS OF WIND ON BUILDING STRUCTURES Jozef ŠIMIČEK email: jozef.simicek@stuba.sk Research field: Statics and Dynamics Fluids mechanics
More informationTHE EFFECTS OF UNIFORM TRANSVERSE MAGNETIC FIELD ON LOCAL FLOW AND VELOCITY PROFILE
International Journal of Civil Engineering and Technology (IJCIET) Volume 7, Issue 2, MarchApril 2016, pp. 140 151, Article ID: IJCIET_07_02_011 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=7&itype=2
More information3 Numerical Methods for Convection
3 Numerical Methods for Convection The topic of computational fluid dynamics (CFD) could easily occupy an entire semester indeed, we have such courses in our catalog. The objective here is to eamine some
More informationDifferential Relations for Fluid Flow. Acceleration field of a fluid. The differential equation of mass conservation
Differential Relations for Fluid Flow In this approach, we apply our four basic conservation laws to an infinitesimally small control volume. The differential approach provides point by point details of
More informationHEAT TRANSFER CODES FOR STUDENTS IN JAVA
Proceedings of the 5th ASME/JSME Thermal Engineering Joint Conference March 1519, 1999, San Diego, California AJTE996229 HEAT TRANSFER CODES FOR STUDENTS IN JAVA W.J. Devenport,* J.A. Schetz** and Yu.
More informationInternational Journal of Research in Science and Technology
EFFECT OF DISSIPATION AND THERMODIFFUSION ON CONVECTIVE HEAT AND MASS TRANSFER FLOW OF A VISCOUS FLUID IN A NON UNIFORMLY HEATED VERTIC AL CHANNEL BOUNDED BY FLAT WALLS *Dr.G.KATHYAYANI, ** P.SAMBA SIVUDU,
More informationChapter 1. Governing Equations of Fluid Flow and Heat Transfer
Chapter 1 Governing Equations of Fluid Flow and Heat Transfer Following fundamental laws can be used to derive governing differential equations that are solved in a Computational Fluid Dynamics (CFD) study
More informationHeat/Mass Transfer Analogy  Laminar Boundary Layer
Chapter 3. Heat/Mass Transfer Analogy  Laminar Boundary Layer As noted in the previous chapter, the analogous behaviors of heat and mass transfer have been long recognized. In the field of gas turbine
More informationBuoyancydriven heat transfer enhancement in a twodimensional enclosure utilizing nanofluids
International Journal of Heat and Mass Transfer 46 (23) 3639 3653 www.elsevier.com/locate/ijhmt Buoyancydriven heat transfer enhancement in a twodimensional enclosure utilizing nanofluids Khalil Khanafer
More informationReview: Convection and Heat Exchangers. Reminders
CH EN 3453 Heat Transfer Review: Convection and Heat Exchangers Chapters 6, 7, 8, 9 and 11 Reminders Midterm #2 Wednesday at 8:15 AM Review tomorrow 3:30 PM in WEB L104 (I think) Project Results and Discussion
More informationAA200 Chapter 9  Viscous flow along a wall
AA200 Chapter 9  Viscous flow along a wall 9.1 The noslip condition 9.2 The equations of motion 9.3 Plane, Compressible Couette Flow (Review) 9.4 The viscous boundary layer on a wall 9.5 The laminar
More informationXI / PHYSICS FLUIDS IN MOTION 11/PA
Viscosity It is the property of a liquid due to which it flows in the form of layers and each layer opposes the motion of its adjacent layer. Cause of viscosity Consider two neighboring liquid layers A
More informationMEASUREMENT OF THERMAL CONDUCTIVITY OF THERMALLY LOWCONDUCTING MATERIALS
Engineering Journal of University of Qatar, Vol. 8, 1995, p. 153165 MEASUREMENT OF THERMAL CONDUCTIVITY OF THERMALLY LOWCONDUCTING MATERIALS Mohamed Selmi and Ismail A. Tag *Assistant Professor, ** Professor
More informationLecture 3 Fluid Dynamics and Balance Equa6ons for Reac6ng Flows
Lecture 3 Fluid Dynamics and Balance Equa6ons for Reac6ng Flows 3. 1 Basics: equations of continuum mechanics  balance equations for mass and momentum  balance equations for the energy and the chemical
More informationDiffusion and Fluid Flow
Diffusion and Fluid Flow What determines the diffusion coefficient? What determines fluid flow? 1. Diffusion: Diffusion refers to the transport of substance against a concentration gradient. ΔS>0 Mass
More informationAdaptation of General Purpose CFD Code for Fusion MHD Applications*
Adaptation of General Purpose CFD Code for Fusion MHD Applications* Andrei Khodak Princeton Plasma Physics Laboratory P.O. Box 451 Princeton, NJ, 08540 USA akhodak@pppl.gov Abstract Analysis of many fusion
More information2. CHRONOLOGICAL REVIEW ABOUT THE CONVECTIVE HEAT TRANSFER COEFFICIENT
ANALYSIS OF PCM SLURRIES AND PCM EMULSIONS AS HEAT TRANSFER FLUIDS M. Delgado, J. Mazo, C. Peñalosa, J.M. Marín, B. Zalba Thermal Engineering Division. Department of Mechanical Engineering University of
More informationPlate waves in phononic crystals slabs
Acoustics 8 Paris Plate waves in phononic crystals slabs J.J. Chen and B. Bonello CNRS and Paris VI University, INSP  14 rue de Lourmel, 7515 Paris, France chen99nju@gmail.com 41 Acoustics 8 Paris We
More informationENHANCEMENT OF HEAT TRANSFER USING WIRE COIL INSERTS WITH CHORD RIBS
ENHANCEMENT OF HEAT TRANSFER USING WIRE COIL INSERTS WITH CHORD RIBS 1 P.S.Desale, 2 N.C.Ghuge 1 PG Student, Heat Power, MCERC, Nasik (India) 2 Asst. Prof., Mech. Dept., MCERC,Nasik(India) ABSTRACT From
More informationEFFECT ON HEAT TRANSFER AND THERMAL DEVELOPMENT OF A RADIATIVELY PARTICIPATING FLUID IN A CHANNEL FLOW
INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET) International Journal of Mechanical Engineering and Technology (IJMET), ISSN 0976 6340(Print), ISSN 0976 6340 (Print) ISSN 0976 6359
More informationAN EXPERIMENTAL STUDY OF EXERGY IN A CORRUGATED PLATE HEAT EXCHANGER
International Journal of Mechanical Engineering and Technology (IJMET) Volume 6, Issue 11, Nov 2015, pp. 1622, Article ID: IJMET_06_11_002 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=6&itype=11
More informationMass Transfer in Laminar & Turbulent Flow. Mass Transfer Coefficients
Mass Transfer in Laminar & Turbulent Flow Mass Transfer Coefficients 25 MassTransfer.key  January 3, 204 Convective Heat & Mass Transfer T T w T in bulk and T w near wall, with a complicated T profile
More informationKeywords: Heat transfer enhancement; staggered arrangement; Triangular Prism, Reynolds Number. 1. Introduction
Heat transfer augmentation in rectangular channel using four triangular prisms arrange in staggered manner Manoj Kumar 1, Sunil Dhingra 2, Gurjeet Singh 3 1 Student, 2,3 Assistant Professor 1.2 Department
More information240EQ014  Transportation Science
Coordinating unit: 240  ETSEIB  Barcelona School of Industrial Engineering Teaching unit: 713  EQ  Department of Chemical Engineering Academic year: Degree: 2015 MASTER'S DEGREE IN CHEMICAL ENGINEERING
More informationChapter 28 Fluid Dynamics
Chapter 28 Fluid Dynamics 28.1 Ideal Fluids... 1 28.2 Velocity Vector Field... 1 28.3 Mass Continuity Equation... 3 28.4 Bernoulli s Principle... 4 28.5 Worked Examples: Bernoulli s Equation... 7 Example
More informationThe Viscosity of Fluids
Experiment #11 The Viscosity of Fluids References: 1. Your first year physics textbook. 2. D. Tabor, Gases, Liquids and Solids: and Other States of Matter (Cambridge Press, 1991). 3. J.R. Van Wazer et
More informationThermal Diffusivity, Specific Heat, and Thermal Conductivity of Aluminum Oxide and Pyroceram 9606
Report on the Thermal Diffusivity, Specific Heat, and Thermal Conductivity of Aluminum Oxide and Pyroceram 9606 This report presents the results of phenol diffusivity, specific heat and calculated thermal
More informationENHANCEMENT OF NATURAL CONVECTION HEAT TRANSFER BY THE EFFECT OF HIGH VOLTAGE D.C. ELECTRIC FIELD
Int. J. Mech. Eng. & Rob. Res. 014 Amit Kumar and Ritesh Kumar, 014 Research Paper ISSN 78 0149 www.ijmerr.com Vol. 3, No. 1, January 014 014 IJMERR. All Rights Reserved ENHANCEMENT OF NATURAL CONVECTION
More informationINTRODUCTION TO FLUID MECHANICS
INTRODUCTION TO FLUID MECHANICS SIXTH EDITION ROBERT W. FOX Purdue University ALAN T. MCDONALD Purdue University PHILIP J. PRITCHARD Manhattan College JOHN WILEY & SONS, INC. CONTENTS CHAPTER 1 INTRODUCTION
More informationEngine Heat Transfer. Engine Heat Transfer
Engine Heat Transfer 1. Impact of heat transfer on engine operation 2. Heat transfer environment 3. Energy flow in an engine 4. Engine heat transfer Fundamentals Sparkignition engine heat transfer Diesel
More informationFREE CONVECTION FROM OPTIMUM SINUSOIDAL SURFACE EXPOSED TO VERTICAL VIBRATIONS
International Journal of Mechanical Engineering and Technology (IJMET) Volume 7, Issue 1, JanFeb 2016, pp. 214224, Article ID: IJMET_07_01_022 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=7&itype=1
More informationFluids and Solids: Fundamentals
Fluids and Solids: Fundamentals We normally recognize three states of matter: solid; liquid and gas. However, liquid and gas are both fluids: in contrast to solids they lack the ability to resist deformation.
More informationGraduate Courses in Mechanical Engineering
Graduate Courses in Mechanical Engineering MEEG 501 ADVANCED MECHANICAL ENGINEERING ANALYSIS An advanced, unified approach to the solution of mechanical engineering problems, with emphasis on the formulation
More informationMHD FLOW AND HEAT TRANSFER WITH TEMPERATURE GRADIENT DEPENDENT HEAT SINK IN A POROUS MEDIUM PAST A STRETCHING SURFACE
I J C E Serials Publications MHD FLOW AND HEAT TRANSFER WITH TEMPERATURE GRADIENT DEPENDENT HEAT SINK IN A POROUS MEDIUM PAST A STRETCHING SURFACE P. H. Veena 1, V. K. Pravin & K. Ashok Kumar 3 ABSTRACT
More informationThe temperature of a body, in general, varies with time as well
cen2935_ch4.qxd 11/3/5 3: PM Page 217 TRANSIENT HEAT CONDUCTION CHAPTER 4 The temperature of a body, in general, varies with time as well as position. In rectangular coordinates, this variation is expressed
More informationLecture 5 Hemodynamics. Description of fluid flow. The equation of continuity
1 Lecture 5 Hemodynamics Description of fluid flow Hydrodynamics is the part of physics, which studies the motion of fluids. It is based on the laws of mechanics. Hemodynamics studies the motion of blood
More informationExperimental Study of Free Convection Heat Transfer From Array Of Vertical Tubes At Different Inclinations
Experimental Study of Free Convection Heat Transfer From Array Of Vertical Tubes At Different Inclinations A.Satyanarayana.Reddy 1, Suresh Akella 2, AMK. Prasad 3 1 Associate professor, Mechanical Engineering
More informationHeat and Mass Transfer in. Anisotropic Porous Media
Adv. Theor. Appl. Mech., Vol. 5, 2012, no. 1, 1122 Heat and Mass Transfer in Anisotropic Porous Media Safia Safi Climatic Engineering Department. Faculty of engineering University Mentouri Constantine
More informationPerformance Investigation of Automobile Radiator using Al 2 O 3 as base Nanofluid
Performance Investigation of Automobile Radiator using Al 2 O 3 as base Nanofluid Ravibala Patil 1, Aditya Choure 2, Kishor Dolare 3, Ajay Bankar 4, Rajesh Dhotre 5 Asst. Professor, Department of Mechanical
More informationExperimental Investigation on Turbulent Flow Heat Transfer Enhancement in a Horizontal Circular Pipe using internal threads of varying depth
IOSR Journal of Mechanical and Civil Engineering (IOSRJMCE) eissn: 22781684 Volume 5, Issue 3 (Jan.  Feb. 2013), PP 2328 Experimental Investigation on Turbulent Flow Heat Transfer Enhancement in a
More informationComparison of Heat Transfer between a Helical and Straight Tube Heat Exchanger
International Journal of Engineering Research and Technology. ISSN 09743154 Volume 6, Number 1 (2013), pp. 3340 International Research Publication House http://www.irphouse.com Comparison of Heat Transfer
More informationModule 1 : Conduction. Lecture 5 : 1D conduction example problems. 2D conduction
Module 1 : Conduction Lecture 5 : 1D conduction example problems. 2D conduction Objectives In this class: An example of optimization for insulation thickness is solved. The 1D conduction is considered
More informationO.F.Wind Wind Site Assessment Simulation in complex terrain based on OpenFOAM. Darmstadt, 27.06.2012
O.F.Wind Wind Site Assessment Simulation in complex terrain based on OpenFOAM Darmstadt, 27.06.2012 Michael Ehlen IB Fischer CFD+engineering GmbH Lipowskystr. 12 81373 München Tel. 089/74118743 Fax 089/74118749
More informationDistinguished Professor George Washington University. Graw Hill
Mechanics of Fluids Fourth Edition Irving H. Shames Distinguished Professor George Washington University Graw Hill Boston Burr Ridge, IL Dubuque, IA Madison, Wl New York San Francisco St. Louis Bangkok
More informationEffects of mass transfer processes in designing a heterogeneous catalytic reactor
Project Report 2013 MVK160 Heat and Mass Transport May 13, 2013, Lund, Sweden Effects of mass transfer processes in designing a heterogeneous catalytic reactor Maryneth de Roxas Dept. of Energy Sciences,
More informationUnderstanding Boiling Water Heat Transfer in Metallurgical Operations
Understanding Boiling Water Heat Transfer in Metallurgical Operations Dr. Mary A. Wells Associate Professor Department of Mechanical and Mechatronics Engineering University of Waterloo Microstructural
More informationNumerical Model for the Study of the Velocity Dependence Of the Ionisation Growth in Gas Discharge Plasma
Journal of Basrah Researches ((Sciences)) Volume 37.Number 5.A ((2011)) Available online at: www.basrascience journal.org ISSN 1817 2695 Numerical Model for the Study of the Velocity Dependence Of the
More informationStudy on Pressure Distribution and Load Capacity of a Journal Bearing Using Finite Element Method and Analytical Method
International Journal of Mechanical & Mechatronics Engineering IJMMEIJENS Vol:1 No:5 1 Study on Pressure Distribution and Load Capacity of a Journal Bearing Using Finite Element Method and Method D. M.
More informationFlow Loss in Screens: A Fresh Look at Old Correlation. Ramakumar Venkata Naga Bommisetty, Dhanvantri Shankarananda Joshi and Vighneswara Rao Kollati
Journal of Mechanics Engineering and Automation 3 (013) 934 D DAVID PUBLISHING Ramakumar Venkata Naga Bommisetty, Dhanvantri Shankarananda Joshi and Vighneswara Rao Kollati Engineering Aerospace, MCOE,
More informationA COMPUTATIONAL FLUID DYNAMICS STUDY ON THE ACCURACY OF HEAT TRANSFER FROM A HORIZONTAL CYLINDER INTO QUIESCENT WATER
A COMPUTATIONAL FLUID DYNAMICS STUDY ON THE ACCURACY OF HEAT TRANSFER FROM A HORIZONTAL CYLINDER INTO QUIESCENT WATER William Logie and Elimar Frank Institut für Solartechnik SPF, 8640 Rapperswil (Switzerland)
More informationFluid Mechanics Prof. T. I. Eldho Department of Civil Engineering Indian Institute of Technology, Bombay. Lecture No. # 36 Pipe Flow Systems
Fluid Mechanics Prof. T. I. Eldho Department of Civil Engineering Indian Institute of Technology, Bombay Lecture No. # 36 Pipe Flow Systems Welcome back to the video course on Fluid Mechanics. In today
More informationHEAT TRANSFER ENHANCEMENT USING NANOFLUIDS AN OVERVIEW Shanthi R a*, Shanmuga Sundaram ANANDAN b and Velraj RAMALINGAM c
HEAT TRANSFER ENHANCEMENT USING NANOFLUIDS AN OVERVIEW Shanthi R a*, Shanmuga Sundaram ANANDAN b and Velraj RAMALINGAM c by a Department of Mechanical Engineering, Rajalakshmi Engineering College, Chennai.
More informationCorrelations for Convective Heat Transfer
In many cases it's convenient to have simple equations for estimation of heat transfer coefficients. Below is a collection of recommended correlations for singlephase convective flow in different geometries
More informationNatural Convective Heat Transfer from Inclined Narrow Plates
Natural Convective Heat Transfer from Inclined Narrow Plates Mr. Gandu Sandeep MTech Student, Department of Mechanical Engineering, Malla Reddy College of Engineering, Maisammaguda, Secunderabad, R.R.Dist,
More informationI, THERMAL PERFORMANCE ENHANCEMENT OF HEAT PIPE USING
THERMAL PERFORMANCE ENHANCEMENT OF HEAT PIPE USING TiO2 NANOFLUID A. Victor Richardson *, A. Dinesh Kumar**, S. Suthagar*** & E. Neduncheralathan*** * Assistant Professor, Department of Mechanical Engineering,
More informationAn Experimenatl Study on Heat Transfer Behaviors of A Welded  Aluminum Minichannel Heat Exchanger
ISSN (e): 2250 3005 Vol, 05 Issue,02 February 2015 International Journal of Computational Engineering Research (IJCER) An Experimenatl Study on Heat Transfer Behaviors of A Welded  Aluminum Minichannel
More informationEditorial Manager(tm) for Nanoscale Research Letters Manuscript Draft
Editorial Manager(tm) for Nanoscale Research Letters Manuscript Draft Manuscript Number: Title: Nanofluids for Heat Transfer: An Engineering Approach Article Type: SI: Nanofluids Keywords: nanofluid; systems
More informationHeating In Agitated & NonAgitated Vessels
Heating In Agitated & NonAgitated Vessels IBD/BFBiMidland Section Engineering Symposium on Heat Transfer and Refrigeration BurtononTrent Jan 2014 Mark Phillips Briggs of Burton Contents Heat Energy
More informationENHANCEMENT OF EVAPORATION OF FALLING LIQUID FILM ON HORIZONTAL TUBE BUNDLE
International Water Technology Conference, IWTC1 008 Alexandria, Egypt 1 ENHANCEMENT OF EVAPORATION OF FALLING LIQUID FILM ON HORIZONTAL TUBE BUNDLE Mostafa M. Aad* and ElSayed R. Negeed** * Mechanical
More informationVISUAL PHYSICS School of Physics University of Sydney Australia. Why do cars need different oils in hot and cold countries?
VISUAL PHYSICS School of Physics University of Sydney Australia FLUID FLOW VISCOSITY POISEUILLE'S LAW? Why do cars need different oils in hot and cold countries? Why does the engine runs more freely as
More information