NUMECA. Advanced Developments for Better Products

Transcription

1 A new wave in fluid dynamics NUMECA Advanced Developments for Better Products

2 NUMECA International Why NUMECA? Contents PRODUCTS AutoMesh About Us NUMECA has been providing Computational Fluid Dynamics (CFD) Software, grid generation systems and consulting services worldwide since NUMECA s software systems are used for the simulation, design, and optimization of fluid flow and heat transfer. They are used by product developers and design and research engineers, allowing them to reach superior product quality and performances, at a reduced engineering cost. NUMECA International corporate headquarters is located in Brussels with offices, resellers and service centers in the USA, Japan, China, Hong Kong, India, Belgium and distributors in Germany, Spain, Italy, Slovenia, Poland, Turkey, Russia, South Korea, Indonesia, and Malaysia. FIRST to offer a fully coupled and integrated CFD + acoustic propagation software system: FINE /Acoustics FIRST in offering a new design system, from preliminary 1D to 2D and full 3D, including multi-objective optimization at all stages of this process, in AutoDesign. Application-Driven Grid Generation and CFD Software NUMECA s product strategy is based on the development of automated, integrated and customized software systems allowing optimal and rapid simulation, design and optimization. Our software closely follows industry requirements and needs: In grid generation, with AutoMesh TM, covering the whole range of applications with tuned meshing solutions, as the pre-processor of most commercial CFD tools. In CFD, with FINE TM /Turbo, FINE TM /Open with OpenLabs TM, and FINE TM /Marine, dedicated respectively to Turbomachinery, Aeronautics, Automotive, Multi-Physics and Marine applications. In design and optimization with FINE TM /Design3D. Advanced Development for Better Products Major Benefits to Your Organization Improved performance, leading to a more effective design process. Significant time and cost reduction throughout the whole CFD chain. NUMECA grid generation automated systems AutoMesh TM, combined with the significant speed-up in CPU with its CPU-Booster TM, guarantee a reduction of one to three orders of magnitude in your engineering and CPU time, on large test cases and complex geometries. Improve overall engineering efficiency and productivity. Improve decision support with reliable simulation. Effective design through optimization. Services Customer satisfaction is our main objective and we continuously improve our software and services to help you achieve successful product design. We offer a wide range of services including: Consultancy in a wide range of fluid, heat transfer, and multiphysics applications; Upgrades, advanced hot line and dedicated training and webinars; FINE /Turbo FINE /Open with OpenLabs... 8 FINE /FSI-Oofelie and FSI modules... 9 FINE /Marine FINE /Acoustics AutoDesign AutoBlade and FINE /Design3D KEY FEATURES Open CFD Approach OpenLabs Membership for Academic Research and Education CPU-Booster Modal and Flutter Analysis Uncertainty Quantification Non-Deterministic Simulations FINE /Open with OpenLabs for Combustion and Radiation Modeling Multifluid and Multiphase Flows NUMECA has been the first to introduce the following technologies: FIRST in automatic grid generator for turbomachinery with AutoGrid5 FIRST in unstructured full hexahedral grid generation: HEXPRESS FIRST in automatic grid generation & integrated CAD cleaning for extremely complex geometries: HEXPRESS / Hybrid FIRST for full unsteady rotor-stator interactions, with gains of 1 to 3 orders of magnitude in CPU time: NLH Module (Nonlinear Harmonic) NUMECA s R&D team is a worldwide center of excellence comprising highly-skilled engineers and PhDs, of more than 20 nationalities, in Computer Science, Mathematics, Physics and Fluid Dynamics. NUMECA International participates in a large number of research projects with university departments, research laboratories and leading industrial partners, allowing us to offer the latest breakthroughs in technology to our customers. By choosing NUMECA you will gain access to the most advanced technology in the field of application-driven, fast and accurate CFD simulation software, automated full hexahedral mesh generation, solution-adaptive grid optimization, dedicated post-processing, CAD modeling, and optimization Flexible licensing arrangements to deal with all specific organizational and business requirements; Extended partnership including: - Special arrangements to meet specific requirements in terms of confidentiality, proprietary developments and know-how; - Validation and calibration of our software to your specific test cases; - Customization of the whole CFD chain towards customer specific requests; - Integration of NUMECA software into customer design cycle chain; - Access to software routines and R&D program through priviledged partnerships. Unsteady Phenomena Predicted in Hours, Superior Solutions with Nonlinear Harmonic Approach (NLH) Cooling flow and Thermal Effects in Turbomachinery EXAMPLES OF NUMECA SOLUTIONS Aerospace Applications Automotive Industry Wind Turbine Industry Hydro Engineering FIRST for impressive gain in convergence speed, up to 3-5: CPU-Booster FIRST in commercial Open CFD environment: OpenLabs FIRST to introduce a tool for Uncertainty Quantification: UQ Module JULIEN DEBOCK Julien DEBOCK 2010 JULIEN DEBOCK 2010 JULIEN DEBOCK 2010 JULIEN DEBOCK 2010

3 HEXPRESS AutoMesh HEXPRESS / Hybrid AutoGrid5 IGG New Generation of Innovative High-Quality Full-Hex and Hex Dominant Meshing Tools for Whole CAE Applications Increase your Productivity by One Order of Magnitude AutoGrid5 HEXPRESS Unstructured Full Hex- Non Conformal - body fitted grid generator for arbitrary geometries. No prism, no tetrahedra, no pyramid cells. Customization to User-Specific Features: Python based commands accessible through scripts User-defined scripts for batch mode operations in design process Centrifugal compressor structured/unstructured performed with Autogrid5 (impeller) and HEXPRESS (Centrifugal Volute) Counter-Rotating Open Rotor Full automatic hexahedral block structured grid generator for all types of rotating machinery and turbomachinery: complex axial, radial and mixed-flow configurations. AutoGrid5 generates grids in a few minutes, with just a few clicks through a wizard-based interface. Axial multi-stage turbine Fully-Hexaedral mesh on appended hull configuration HEXPRESS /Hybrid Integrated CAD cleaning and parallel grid generation system creating conformal body-fitted meshes on complex arbitrary geometry. HEXPRESS /Hybrid produces a 100-million cell grid on a full car including the underhood in 1 hour on 48 cores, starting from unrepaired STL files. Viscous layers around main plate and flap Wind turbine mesh IGG Automatic multistage mesh topology Non axi-symmetric end walls Interactive Geometry Modeler and Multi-Block Structured Grid Generator for arbitrary geometry Parametric design and meshing of cooled turbine blade. Centrifugal multi-stage pump Hydro turbine casing and stay vane Turbocharger - Courtesy of Honeywell F1 racing car grid Simple and intuitive block creation tools Automatic mapping and block connections Automated meshing based on Python scripts Meshing replay can be used in optimization loops. HEXPRESS and HEXPRESS /Hybrid use a similar volume-to surface approach, 4 suppressing the need for a surface mesh. Both systems run in batch or interactive mode and are interfaced to all major commercial CFD codes. 5

4 FINE /Turbo Advanced CFD Technology for Turbomachinery High Performance Computing FINE /Turbo HPC Capabilities Extend Beyond 1-Billion-Cell Grids on Thousands of Processors We rely on NUMECA for their entire suite of products that helps from beginning of model creation to definition, solving and post-processing [...] I would recommend NUMECA: their tools, their people, their services are all top notch. I recommend them to everybody except our competitors! Ramgen Power Systems COO Aaron Koopman FINE /Turbo FINE /Turbo is an accurate and powerful block structured Navier-Stokes CFD software dedicated to the simulation of internal, multi-stages rotating and turbomachinery flows. FINE /Turbo integrates: Multi-stage axial compressor (Courtesy RR) Fully transparent and virtual domain decomposition allowing the launch of a grid with a small number of blocks on an arbitrary number of processors. Efficient and optimized automatic load balancing taking advantage of a large HPC configuration (thousands of processors) Fully transparent reconstruction of the solution allowing for the analysis and visualization of the solution on the original grid or at coarser level in CFView Casing/hub treatment fully hexahedral automated grid generator AutoGrid5 & IGG ; advanced density-based numerical algorithms with robust local preconditioning for incompressible flow; automatic performance curve construction & summary reports; easy-to-use and intuitive interface for fast solution set-up; dedicated post-treatment for turbomachinery in CFView ; batch process for transparent integration in a design cycle; multi-physics: aero-acoustics, fluid structure interaction, real gas modeling, particle tracking, cavitation, conjugate heat transfer, etc. Wind Turbine Fan Centrifugal Compressor Hydro Energy applications Space Pump Geometry Overview Linear speed-up up to 500 cores Mesh CPU-Booster TM : Convergence in 50 cycles Integrated Nacelle & Rotating Fan Counter Rotating Open Rotor Propeller 6 CPU-Booster TM Axial Compressor Allowing higher CFL number ~1000 Very fast convergence Gain: 1 to 2 orders of magnitude faster CPU time Automatic Performance Curve construction starting from design point within user-specified range NASA Stage 67: Recirculated Injector calculated with Full Unsteady NLH simulation million grid cells (left: B2B view, right: 3D view) 7

5 FINE /Open with OpenLabs Unstructured CFD Technology for Complex Flow Configurations MultiPhysics Fluid Structure Interaction Modal Approach, Coupling through MPPCI and Strong Coupling in FINE /FSI-Oofelie Biomedical flows : Blood simulation in the aorta FINE /Open with OpenLabs FINE /Open with OpenLabs is an accurate unstructured Navier-Stokes solver, with extended turbulence and physical models. FINE /Open with OpenLabs solves any flow, from incompressible to low and high speed flows. FINE / Open with OpenLabs integrates HEXPRESS or HEXPRESS /Hybrid. Modal Approach for Forced Response Analysis Rotor 67 Transonic compressor blade Flutter on Agard Wing Vortex Vibration Beam: Amplitude and Frequency Experiment and CFD Comparison Urban environment flows: Brussels, Courtesy Immobilière du Royal Rogiers and AM Art & Build/Montois Partners Transonic compressor blade magnitude of deformation on the blade surface [m] and relative mach number at mid span. Automotive applications MPPCI for Flutter Analysis FINE /FSI-Oofelie for Curtain Header Displacement Fluid: water & Solid material: steel. Maximum enlargement of the slot: 1.21 mm with no reinforcement, mm with cylinders, 0.44 mm with plates. Composite wind turbine blade displacement. FSI simulation: Coupling of FINE TM /Open with OpenLabs TM (CFD) and ABAQUS (Simulia-FEA) through MPCCI. Convergence for complete car geometries in 50 cycle! Jeep (19 million cells) Solution-adaptive grid optimization for higher accuracy MPCCI: Mesh-based Parallel Code Coupling Interface from Fraunhofer Institute SCAI MPCCI interface for codes coupling. 8 Aerospace: transonic to hypersonic flows For more information on OpenLabs go to page 18 9

6 FINE /Marine The leading CFD software for naval architects and marine engineers Resistance calculation including hydrofoils Resistance calculation at Froude 0.24 FINE /Marine is a unique integrated CFD software environment for the simulation of mono-fluid and multi-fluid flows around any kind of ships, boats or yachts, including various types of appendages. The powerful and customized graphical user interface drives the user into the whole simulation process and integrates marine-dedicated features for different applications. Sailing yachts, offshore vessels, cruise ships...and much more! Graphical User Interface FINE GUI Marine-dedicated environment Fully scriptable Mesh Generator HEXPRESS Highly automated mesh generator for high quality and full hexahedral unstructured meshes. Post-processing CFView Powerful post-processing and scientific visualization system offering all qualitative and quantitative tools and marine dedicated add-ons for flow visualization and analysis. Marine-dedicated add-ons Fully scriptable Flow Solver ISIS-CFD 10 FINE /Marine is the first code that gave us confidence in the use of CFD tools, with results never differing much from experimental values. Dr. Piet Van Oossanen, Van Oossanen Naval Architects 6DOF incompressible flow solver, recognized as having the best accuracy for all types of marine applications, including free surface capturing. ISIS-CFD is developed by the Ecole Centrale de Nantes (ECN) and CNRS and industrialized in partnership with NUMECA. Drastically reduce the engineering time to set-up resistance and sea keeping simulations with the new C-Wizard! 11

7 FINE /Acoustics Efficient Aero-Acoustic Prediction The FIRST Integrated Aero & Vibro Acoustic Suite Integrated solution FINE /Acoustics is a fully CFD Integrated environment dedicated to Aero-Vibro-Acoustic simulations. It provides the capabilities to solve a wide range of aeroacoustic and fully coupled vibro-acoustic problems, from simple pre-design calculations to detailed large scale analyses of complex systems. CROR blades location FW-H radiating surfaces Key features Integrated with FINE /Turbo, NLH method and FINE /Open Interfaced to any commercial CFD software Turbulence noise modeling through the Flow-Noise DSNG solver FW-H, FEM, BEM coupled propagation modules Flexible GUI providing pre/post processing capabilities Fan noise - aero-engine nacelles NLH analysis of noise source and propagation Radiation from solid/permeable, fixed/rotating FW-H surfaces FW-H simulation of CRORs radiated noise Automatic import/transformation of harmonic data computed with the NLH method. Possibility to simulate angle of attack and supersonic tip-speed flow conditions. Integrated CFD-Acoustic approach for tonal noise CFD-Acoustic integrated simulation of turbo-machinery applications Simultaneous analysis of noise source and propagation (FINE /Turbo -NLH) Analysis of noise radiation (FINE /Acoustics) Flow-noise Flow-Noise reconstruction of turbulence broadband noise Unique stochastic method available on the market Approach based on a cost-efficient steady RANS simulation Acoustic pressure amplitude Exploitation of the DSNG algorithm (ref. AIAA ) Acoustic sources evaluation by means of Sound propagation in the nacelle duct and near-field Lighthill and Lamb formulations (computed with FINE /Turbo) Coupling with BEM/FEM in presence of 12 interactions with solid bodies Sound radiation in the far-field (computed Turbulence noise reconstruction (Flow-Noise simulation Orders of magnitude faster than LES/DES with FINE /Acoustics) of an airfoil with slat deployed) approaches 13

8 Vibro-Acoustic Analysis AutoDesign The FIRST Totally Integrated Design and Optimization Software for Turbomachinery FINE /Acoustics performs fully coupled BEM-FEM vibro-acoustic analysis Import of structural modes from main structural solvers (Nastran, Abaqus, Ansys) Easy definition of applied forces Import of applied pressure fields from any CFD tool Acoustic mesh automatically extracted from Structural and CFD meshes Surface mesh coarsening Automatic Shrink-Wrapping for hole closure and mesh size reduction Acoustic pressure distribution over the water pump surface and in the far-field (at BPF and high frequency) AutoDesign graphical user interface within OMNIS 1.1 Axial compressor 1.5 stage with fillet on blades Preliminary and optimized design Multidisciplinary 3D blade shape optimization Aero-Vibro-Acoustic Analysis of Exhaust Systems (mufflers) Transmission Loss FINE /Acoustics enables simulation of Pipe-Noise, Shell-Noise and Flow-Noise in muffler applications. Automatic calculation of Transmission Loss with different approaches (transfer matrix, impedance matrix). Multi-domain fully coupled FEM / BEM modules, with structural coupling. Sound absorption from bulk reacting materials (e.g. foam, mineral wool, fibers), perforated surfaces, dissipative media. Surface impedance boundary condition available. Turbomachinery dedicated system Preliminary design with AutoDesign Design of Experiment Parametric blade modeler with AutoBlade Optimization with genetic and Krylov algorithm Artificial neural network model Coming soon: user-friendly adjoint based optimization Centrifugal compressor: Aerodynamic & Acoustic Optimization with FINE /Design3D Automatic calculation of Transmission Loss of an automotive muffler From 1D to 3D turbomachinery design and optimization including flow and mechanical stresses optimization Initial Optimized

9 AutoBlade & FINE /Design3D Multipoint and Multi-Objective Optimization 3D Design and Optimization Rotating Machinery AutoBlade AutoBlade is an advanced and easy-to-use 3D parametric modeler dedicated to the design of rotating and turbo-machinery blades including: Conversion of CAD models to a fully parametric definition, Fitting module to import an existing geometry Interactive graphical edition of the design parameters, Large variety of turbomachinery parametric models, Parametric variables for: end walls; non-axisymmetric hub/shroud; blade profile; splitter blades; profile stacking; technological effects; User defined parameters; Dependency between parameters decreasing the size of optimization parameters; Tool analysis for blade and meridional contour; Full undo/redo capability; And much more! Pre-defined parameter templates for various configurations: axial, centrifugal, radial, compressor, fan, turbine, pump, wind-turbine. FINE /Design3D Initial FINE /Design3D is highly integrated 3D optimization tool designed to improve the performance of rotating and turbomachinery blades. It allows designers to break the limit of traditional design rules and explore the concept of computer-based 3D innovative design. FINE /Design3D integrates in a user-friendly interface, the 3D parametric blade modeler AutoBlade TM, genetic algorithms artificial intelligence, design of experiments techniques and efficient optimization algorithms. Turbocharger innovative guide vane profile ( Courtesy BOSCH MAHLE Turbosystems ) Optimized 3D Compressor blade multi-points optimization AutoBlade Easy-to-Use GUI including: 1. Model editor 2. Interactive 3. Contextual Menus 4. Customizable 3D view 5. View controls 6. Analysis tools 7. Undo / redo functions 3D turbine multi-points optimization Initial Optimized Mixed flow fan stage optimization Number of blades and separation zones (red area) are improved Applications FINE /Design3D covers a large range of applications Blade Re-cut Non-axisymmetric User-defined parameters including multi-stage axial, radial and mixed-flow hub/shroud compressor, turbine, pumps, fans, wind-turbine KAPLAN Torque Converter Turbine or propellers optimization optimization

10 NUMECA s Approach to Open CFD Combine the advantage of an Open CFD code with a highly powerful & fully supported industrial and quality assured software environment. OpenLabs OpenLabs is a dialogue system with the underlying CFD code FINE /Open accessing its routines and sources in a Lab in easy text format, allowing unlimited customization for your own code usage. Create or download Labs from the NUMECA library and benefit from a wide community experience through a forum. Unique business model with advantageous cost control for: Industrial users benefit from FINE /Open with OpenLabs with unlimited parallel cores capability at the cost of a single seat configuration. Academic users benefit from the Academic Membership program with unlimited access to seats and parallel cores. OpenLabs GUI Figure 1 Examples of applications Example of a Lab to add a Transport equation for the pollutant mass Fraction. Figure 1: the Transport equation Figure 2: part of the Lab Figure 2 Initial free surface position for a VOF simulation Unsteady inlet boundary conditions Mass diffusion to track pollutant concentration Realizable k-ε model, round/jet anomaly correction Generalized transition models Time-dependent heat source Radiation optical properties, soot formation Droplet condensation model, cavitation models Heat source term added to a solid block OpenLabs Membership for Academic Research and Education To join this program contact the Numeca Academic Group at [email protected] the registration is very simple and straightforward and the cost is limited to 500 per department. Annual membership FINE /Open with OpenLabs : as many licenses on as many cores as needed for your department Documentation and tutorials included Access to online discussion forum Possibility for Labs exchange Mach number 2 nd order upwind with mesh adaptation NACA0012 α = 2, static pressure color contour Contour of mass fraction Plot: axial velocity at center line KEY FEATURES Open CFD through OpenLabs Automatic full hexa or hex-dominant meshing (HEXPRESS & HEXPRESS /Hybrid) Reduction by one order of magnitude of the CPU time compared to other CFD code, with the CPU-Booster Access to models in combustion, multiphase, radiation Easy set-up of test case Add/customize physical model Compile with a single Visualize added quantity Optional extension to FSI in FINE /Open GUI in OpenLabs GUI click and run (FINE /Oofelie) on request Actuator disk model of propellers in a duct All types of flow and liquids, from low speed to hypersonic regime 18 19

11 CPU-Booster Drastically reduce your computation time Modal & Flutter Analysis Modal Approach for Fluid Structure Interaction Prediction CPU-Booster fits into NUMECA s objective to keep reducing computation time. Most importantly, this time reduction is made without compromising the accuracy of the flow solution. CPU-Booster reduces the computation time by up to one order of magnitude with an optimum efficiency on large mesh size. CPU-Booster is available with FINE /Turbo and FINE /Open with OpenLabs and can be applied to various turbomachinery and external flow configurations. FSI computation with one single code FINE /Turbo and FINE /Open with OpenLabs extend their capabilities with the modal approach, an efficient method for fluid structure interaction prediction. Only one single integrated code is used: the modal equations of the structure part are solved inside the Cold-to-hot Analysis fluid flow solver. No additional interpolation is required between fluid and structure data during the FSI computation, reducing the computation time and increasing the accuracy. Impressive gain in convergence speed, up to 1 order of magnitude Automatic settings for the flow solver when activating the CPU-Booster This new method allows users to increase the CFL number up to 1,000 The CPU-Booster is compatible with the main features of FINE /Turbo and FINE /Open with OpenLabs Steady blades deformation due to centrifugal and aerodynamic effects. Right: example of magnitude of deformation (m) for Rotor 67. Forced Response Analysis Unsteady blades deformation under adjacent blade row passing wake. Right: example of deformation field on stator blade of a compressor stage (Courtesy of TU Darmstadt) Unique convergence acceleration technique Flutter Analysis Unique on the market: Flutter Analysis of turbo machinery now affordable at industrial level with the coupling of Modal Approach and the NLH method. The blades aerodamping can be derived from the unsteady flow response by computing only one passage per blade row at whatever IBPA! Stability paramenter Aerodamping versus IBPA IBPA (deg) NASA LSCC - Blade deformation - IBPA

12 Uncertainty Quantification Enhance the reliability of your CFD simulations Non-Deterministic Simulations Managing Uncertainties and Risks within NUMECA s CFD Simulation Process Actual operating conditions of industrial systems are a combination of numerous operational and geometrical uncertainties. This is a major source of risk in the design process. Operational and geometrical uncertainties in the CFD simulation: Tolerances of manufacturing Uncertainties on inlet and boundary conditions Model uncertainties Incompressible numerical errors etc. NASA Rotor 37 New methodologies are required to incorporate the presence of uncertainties at the level of the simulation tools in order to improve the predictive reliability. This means that the simulations tools become nondeterministic. Non-deterministic specific menu Different probability density function can be set for each uncertainty Pre-defined or user-defined probability density functions can be used Turbomachinery performance map with error bars With NUMECA s Uncertainty Quantification module, designers now have the capability to easily quantify uncertainty and produce a range of confidence in their performance prediction. Through an intuitive interface, the UQ module allows users to set input parameters uncertainty gaussians, combine them to get the effect on the solution. Quantify the effect of input parameters uncertainty on CFD solutions. Operational uncertainty: Uncertain Inlet Total Pressure profile. Pressure distribution around mid-span blade profile. Node locations (left). Shock locations are observed with larger uncertainty(right). Error bars represent variation of standard deviation σ. NACA0012 Airfoil Courtesy TU DELFT Re=3.106, Angle of Attack: 3 degrees Geometrical uncertainties: Uncertain relative thickness, Uncertain camberline. Output: The airfoil pressure coefficient & its standard Operational uncertainty: Uncertain Outlet Static Pressure. deviation. Pitch-wise averaged pressure ratio radial distribution. Larger uncertainty near tip

13 FINE /Open with OpenLabs for Combustion & Radiation Modeling Robust, Accurate and Reliable Modules for All Types of Combustion Full Hex HEXPRESS Mesh of an Aero Engine Combustor FGM - Flamelet Generated Manifold Approach: NUMECA s Unique Feature for Improved Modelling Simulation of the Reactive Flow in a Combustion Chamber > Applications Simulation of furnaces General non-premixed or partially premixed gaseous combustion processes Aero-engine combustors Gas turbine combustors Easy to Use GUI for Combustion and Radiation Modelling Combustion Look-up Table Automatically Generated full-hex Mesh Attached Flame RANS Flamelet FGM TU Darmstadt s Generic Gas Turbine Combustor > Non-Premixed Combustion Modeling: Mixture fraction approach Tabulated chemistry method Enthalpy defect method for simulation of non-adiabatic flames (radiative heat loss) Spray combustion > Partially Premixed Combustion Modeling: Mixture fraction/progress variable approach Two modeling methods available: Flamelet Generated Manifold technique Hybrid BML/Flamelet model > Premixed Combustion Modeling: Progress variable approach for flame front tracking Zimonts Turbulent Flame Speed Closure Lifted Flame Progress Variable > Multi-species framework for general reactive flow simulations Finite rate chemistry Eddy dissipation modeling approach > Radiation Modeling: First Order Spherical Harmonics Method (P1) Emission Model for optically thin media Finite Volume Method (FVM) for radiative heat transfer Weighted-Sum-of-Grey-Gases (WSGG) method for the determination of optical properties > Modeling Pollutant Formation: NOx postprocessing module (thermal) Soot models: One equation model of Greeves & Khan Two equation model of Moss & Lindstedt Non-premixed Combustion GUI Partially-premixed Combustion GUI Accurate and Reliable Predictions with the FGM Method Experiment Temperature OH Velocity magn. z z FGM table created with TABGEN/Chemistry, NUMECA s combustion table generation tool. The plot shows the temperature manifold in dependence of the mixture fraction and the progress variable z Modeling of the Reactive Flow in Premixed Combustors Modeling the Combustion Process and the Radiative Heat Transfer in Furnaces r r r Sydney/Sandia Bluff-body Stabilized Flame (Experiment and simulated flow fields) 24 This shows the streamlines coloured with the temperature of the simulated flow field in DLR Stuttgart s model combustor. The computation was carried out using Zimont s modeling approach for premixed combustion processes. Simulated temperature field in the IFRF glass melting furnace. The temperature field was obtained using a non-premixed flamlelet method coupled with the P1 radiation model FGM: Flamelet Generated Manifold 25

14 Multifluid & Multiphase Flows A Large Range of Models to Cover all CFD Applications and Physics Lagrangian particle tracking in turbomachines Porous Media for Flow in the Nuclear Reactor VOF Model for Free Surface flow User Defined Fluid Properties Streamlines of relative particle velocities in a turbine (stator-rotorstator configuration) Lagrangian Particle Tracking for Separators TABGEN: User Generated Thermodynamic Table for Multiphase & Multifluid Thermodynamic & Transport Properties Broken Dam Problem with the free surface VOF model. Evolution of the wave shape with time Perfect Gas, Ideal gas with Cp(T), Real fluid modeling Barotropic Model for Cavitating Flow Modeling of Evaporating Sprays Multiphase flow Lagrangian particle tracking approach one or two way coupling TABGEN, Thermodynamic table generation tool for complex real Fluids and mixture definition based on the NIST-REFPROP database. 84 pure fluids & mixtures with up to 20 components: typical natural gas constituents, hydrocarbons, main air constituents, water, refrigerants, noble elements Compressible Cavitating Flows DELFT Hydrofoil Cavitating flow showing bubble detachment captured by FINE /Turbo barotropic cavitation law. Courtesy TU Delft. Volumic Heat Sources for FIRE Simulation Particle velocity streamlines with fluid axial velocity contour field and iso-lines of particle diameter at location of complete evaporation. Mean number diameter of initially mono-dispersed evaporating droplet spray. Fire simulation with FINE TM /Open with OpenLabs TM volumic heat source model Cavitating flow of R114 liquid on 4 Venturi (Thermo table approach). Compressibility effects are well taken into account here. Sharp discontinuity captured at the bubble frontier. Cavitating flow on marine propeller. The wake is well captured by FINE /Turbo barotropic cavitation law. Experimental results courtesy INSEAN Italy

15 Unsteady Phenomena Predicted in Hours, Superior Solutions with Nonlinear Harmonic Approach (NLH) 2 Orders of Magnitude Gain in CFD Turn-Around Time NLH Method for Large Scale Multi-Stage Turbomachinery Unsteady Flow One passage mesh only: less memory and affordable CPU time NLH for Flow Distortion Flow distortion in external and internal flow NLH for Flutter Analysis NLH Method for Casing Treatment (Courtesy LFA TU-München). Fluctuation of Static Pressure [Pa] in the volute due to the relative motion of the impeller. Reconstruction in CFView. NLH Method for Clocking Analysis Only one run for the whole clocking spectrum NASA LSCC - Blade deformation - IBPA 90 Nonlinear Harmonic (NLH) CPU Time 3D Radial Turbine Stator 1 and Stator 2 are aligned Solution after rotation of the stator 1 by 80% of its pitch. Efficiency is better at this clocking angle. NLH for Aero-Acoustics Nonlinear Harmonic Method in FINE /Open with OpenLabs Blade-to-blade cut at mid-span Distortion effects on orders of magnitude gain in CPU time. NLH compared to full unsteady with reference to quasi-steady mixing plane in logarithmic scale. Fan stage acoustic pressure wave 3 harmonics per perturbation One blade passage computed 29

16 Cooling Flow and Thermal Effects in Turbomachinery FINE /Turbo, FINE /Open with OpenLabs & AutoMesh Offer Flexibility in Handling Cooled Turbine & Conjugate Heat Transfer (CHT) Flows Full meshing flexibility in AutoMesh by: Parametric design and meshing in AutoGrid5 TM ; Fully hexahedral unstructured meshing in HEXPRESS TM ; Extremely complex configuration meshing in HEXPRESS TM / Hybrid. All Hexahedral Cooled Channel Structured Mesh Local Source & Sink Terms for Film Cooling No meshing of the channels is required Full Mesh Cooling Module Rich options for solving Turbine Conjugate Heat Transfer by meshing real geometry or by source/sink terms without channel meshing. Extremely Complex Configuration Meshing in HEXPRESS /Hybrid AutoGrid5 allows easy positioning of local source & sink locations: single hole, line of holes or slots Experiment : red dots Cooling/Bleed : blue continuous line Full mesh : blue dotted line Cooling Module Full Mesh Cooling Module and Full mesh flow configurations give similar results. (Case Duden, 1999) Cooled Turbine Parametric Design and Automatic Meshing in AutoGrid5 Increasing blowing ratio Internal cooling passages, solid body and external blade main channel meshing (AutoGrid5 ) Interactive and easy-to-use graphical user interface. Fully Hexahedral Unstructured Mesh (HEXPRESS ) CHT CHT simulation compared to test result. Blade surface temperature. Mark II turbine test case Streamline and temperature in fluid and solid body. 1 stage (IGV + Rotor), 20 million cells on 45-core cluster Conjugate Heat Transfer simulation is made simple with non-matching FINE /Open with OpenLabs with HEXPRESS provide high quality full hexa unstructured resolution of cooled turbine phenomena. interfaces between solid-fluid and fluid-fluid blocks for higher quality of mesh

17 NUMECA CFD Solutions for Aerospace Applications Broad Range of Applications: External, Internal, Low Speed, High Speed, Thermal, Fluid Structure Interaction, Acoustics Automated Full-Hex Mesh for Quick CFD Turn Around & Accurate Refueling Simulation HEXPRESS /Hybrid Hex Dominant Parallel Meshing of Hyper-Complex Full Aircraft Configuration in Hours Passenger Comfort Analysis Hypersonic Flow HVAC in an aircraft cabin HEXPRESS full-hex mesh of a wing-box fuel tank for refueling simulation High-Lift Device Design Flutter Analysis Flutter Analysis: FSI coupling of FINE /Open with OpenLabs and an FEA code through MPCCI Very fast accurate aerodynamic performance of transonic, supersonic & hypersonic flows with CPU-Booster TM Alpha=10 Alpha=31 High-lift devices performance at low speed configuration Extended Range of Capabilities for Aircraft Installation and Integration Fast and Accurate Prediction of Aerodynamics of Passenger Airliner Lift vs.angle of attack CPU-Booster TM : Convergence at 50 cycles. 32 Aircraft configuration study: Open Rotor-Fuselage interaction (top left), Pylon-Open rotor interaction (top right), Ground effect at take-off (bottom left), Wingbody interaction (bottom right) 33

18 NUMECA CFD Solutions for the Automotive Industry Increase Your Productivity by at Least One Order of Magnitude Breakthrough in Full Automatic Meshing with HEXPRESS /Hybrid NO CAD Cleaning - NO Surface Mesh Standard Approach: NUMECA CPU-Booster TM combined with the agglomeration multigrid allows for running with CFL 1000 in around 50 cycles for complete car geometries! This translates in a gain of at least one order of magnitude in convergence time! Days / weeks of engineering time Hydroplaning Hydroplaning simulation of a tyre, employing free-surface and splash, plus particle tracking within the grooves Breakthrough in CFD Solution with FINE /Open with OpenLabs Full Second Order Accurate solution Agglomeration multigrid CPU-Booster TM NUMECA s solution: Thermal Flow in a Cabin F1 (40 million cells) Hyper-Complex Configuration Meshing HEXPRESS /Hybrid allows meshing of complete car configurations... Hours with HEXPRESS TM /Hybrid Heat Transfer Flow over a motor bloc External Aerodynamics 34 35

19 NUMECA Solutions for the Wind Turbine Industry Breakthrough in Full 3D Wind Turbine Blade Optimization with FINE /Design3D Multi-point and multi-objective optimization Fully automatic process with no user intervention Optimization featuring Design of Experiments, Artificial Neural Network and Genetic Algorithms Powered by AutoBlade, 3D parametric blade modeler with pre-defined template for Wind Turbine Breakthrough in 3D Wind Turbine Meshing: Full automatic all hexahedra cells meshing in minutes with AutoGrid5 Black: Optimized Blade Red: Initial Blade 2.5 MW twist distribution optimized blade with a gain in annual energy production between 5 and 10%. Simulation of Terrain Effects on Wind Farm Energy Production with FINE TM /Open with OpenLabs TM 3D flow features at high wind speed Fluid Structure Interactions Strong fluid/structure interaction with FINE TM /FSI-Oofelie Modal approach in FINE TM /Turbo Coupling to FEA commercial or in-house tools through MPCCI Advanced Applications: Complex configuration Cross wind in single blade passage Unsteady flow simulation Vibration Flow generated noise Breakthrough in Flow Simulation Computing Time: Fully accurate solution in about 50 cycles with CPU- Booster TM. Wind speed prediction for wind turbine placement in urban environment FSI - Enhancing the torsional flexibility of the blade by optimal selection of the composite fiber orientation 36 37

20 Advanced CFD and Optimization Solutions for Hydro Engineering High Quality all Hexahedra Cells Meshing with AutoGrid5 and HEXPRESS Nonlinear Harmonic Method: A Major Breakthrough in Unsteady CFD Simulations Accurate Rotor/Stator interactions Single passage mesh simulations Accurate unsteady solution with low number of harmonics (Blade Passing Frequencies) Reconstruction in time of the solution Unstructured mesh for spiral casing and distributor (HEXPRESS - < 1 hour CPU time for 1 million cells) Structured mesh for Francis Turbine stay vane, guide vane and runner (AutoGrid5 - mesh generated in a few minutes on a standard PC) Comparison of Non-Linear harmonic and sliding grid simulation: instantaneous Blade pressure distribution and pressure fluctuation amplitude through FFT Full 3D Blade Optimization with FINE /Design3D Advanced Cavitation Modelling Nonlinear Harmonic Sliding Grid Mesh size 900,000 15,000,000 RAM 1.5 Gb 7.5 Gb Before After Iterations ,000 Optimized blade and comparison of Blade Sections (initial in red & optimized in green) CPU Time w.r.t. Steady Mixing Plane 5 > 1000 CPU cost comparison for Nonlinear Harmonic and Sliding Grid simulation with reference to Steady Mixing Plane simulation. 38 Centrifugal Pump - Cavitation increase on suction side of the impeller with decreasing NPSH 39

21 NUMECA International CORPORATE OFFICE Chaussée de la Hulpe,189, Terhulpse Steenweg 1170 Brussels - BELGIUM Tel: Fax: [email protected] - NUMECA is distributed worldwide: please refer to our website for more details.