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© Fluent Inc. 5/10/2015A1 Fluent Software Training TRN-98-006 Fluent CFD Software: Overview.

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Presentation on theme: "© Fluent Inc. 5/10/2015A1 Fluent Software Training TRN-98-006 Fluent CFD Software: Overview."— Presentation transcript:

1 © Fluent Inc. 5/10/2015A1 Fluent Software Training TRN Fluent CFD Software: Overview

2 © Fluent Inc. 5/10/2015A2 Fluent Software Training TRN A Suite of CFD Solvers  Fluent provides a suite of computational fluid dynamics (CFD) solvers: FLUENT (4.5 & 5)NEKTON FIDAPIcePak POLYFLOW MixSim  All are software packages for modeling processes involving: Fluid flow Heat transfer Mass transfer and chemical reactions Related phenomena  They differ in the solver technology used and the industrial applications on which they are focused.

3 © Fluent Inc. 5/10/2015A3 Fluent Software Training TRN Why Multiple Solver Technologies?  Each CFD solution method performs best on a specific group of applications.  As a result, distinct solver algorithms are needed to optimize speed, robustness, and accuracy on different applications.  Fluent Inc. pursues multiple solver technologies in order to meet the diverse needs of our users.  Recently, we have also developed products with capabilities and user interfaces that are tightly focused on specific industries/applications (e.g., IcePak and MixSim ).

4 © Fluent Inc. 5/10/2015A4 Fluent Software Training TRN FLUENT 4.5 and FLUENT 5  FLUENT 5 : FLUENT 5 integrates FLUENT/UNS and RAMPANT Segregated-implicit, coupled-explicit/implicit FVM solver options Complete mesh flexibility Unstructured quad/hex, tri/tet, or hybrid meshes with solution-based mesh adaption  FLUENT 4.5 : Pressure-based, segregated, finite volume method Structured quad/hex meshes Contains some models which have not yet been ported to FLUENT 5 Eulerian-Eulerian multiphase flow model Deforming mesh

5 © Fluent Inc. 5/10/2015A5 Fluent Software Training TRN FLUENT 5  Ideally suited for: Compressible and incompressible flows Able to handle full range of Mach numbers in single solution domain Flows involving complex geometries and complex physics  Typical applications include: Automotive external aerodynamics High-speed aerodynamics Underhood flows Compressible nozzle flow Fans, Pumps, Burners, Furnaces Turbomachinery Reactor Vessels, Heat Exchangers Internal rocket motor flows

6 © Fluent Inc. 5/10/2015A6 Fluent Software Training TRN FLUENT 5 : Flow in a Cooling Jacket Surface pressure distribution in an automotive engine cooling jacket

7 © Fluent Inc. 5/10/2015A7 Fluent Software Training TRN FLUENT 5 : Axial Compressor Blade Surface grid (one periodic repetition)Contours of pressure

8 © Fluent Inc. 5/10/2015A8 Fluent Software Training TRN FLUENT 4.5  Ideally suited for: Incompressible and mildly compressible flows Flows involving complex physics Multiphase flows Flows requiring deforming grids  Typical applications include: Cyclones Mixing tanks ( MixSim interface) Bubble columns Fluidized beds Unsteady piston/cylinder flows

9 © Fluent Inc. 5/10/2015A9 Fluent Software Training TRN FLUENT 4.5 : Multiphase Flow in a Riser Instantaneous solids concentration in a riser, which is a pneumatic solids conveying device. Porous media (simulating a perforated plate) at the top of the domain distributes the flow and produces uniform delivery of catalyst (solids) to the reactor.

10 © Fluent Inc. 5/10/2015A10 Fluent Software Training TRN FIDAP  Fully coupled or segregated finite element method Ideally suited for: Incompressible and mildly compressible flows Flows involving complex geometries and physics  Complete mesh flexibility: Unstructured quad/hex, tri/tet, or hybrid meshes  Solver of choice for applications involving turbulence, “stiff” chemistry, free surfaces, phase change, and shear dependent viscosity  Typical applications include: Biomedical flows Semiconductor flows: CVD, crystal growth, electroplating Metal casting, solidification, and extrusion Extruders, complex die flows

11 © Fluent Inc. 5/10/2015A11 Fluent Software Training TRN FIDAP : Flow in a Blood Pump Velocity vectors and pressure distribution inside a blood pump.

12 © Fluent Inc. 5/10/2015A12 Fluent Software Training TRN FIDAP : Crystal Growth Flow pattern and melt interface during crystal growth using the Bridgman technique

13 © Fluent Inc. 5/10/2015A13 Fluent Software Training TRN POLYFLOW  Fully-coupled and segregated finite element methods Ideally suited for laminar, viscous flows involving: Complex rheology (including viscoelasticity) Free surfaces  Mesh flexibility: Unstructured quad/hex, tri/tet, or hybrid meshes, wedge elements  Solver of choice for polymer processing and related applications such as: Extrusion, coextrusion, die design Blow molding, thermoforming Film casting, glass sheet forming/stretching, fiber drawing Chemical reactions, foaming Viscoelastic flows (“memory effects”)

14 © Fluent Inc. 5/10/2015A14 Fluent Software Training TRN POLYFLOW : “Inverse” Die Design  Given desired part shape, POLYFLOW determines necessary die lip geometry. Requested part shape and calculated die lip shape for a rubber car door seal. die lip (calculated) desired part extrusion direction

15 © Fluent Inc. 5/10/2015A15 Fluent Software Training TRN POLYFLOW : Blow Molding  Uses 3D shell elements  Simulation of: Parison extrusion Pinch-off Inflation Cooling  Prediction of thickness distribution  Prediction of extrudate swelling due to: Stress relaxation Other elastic effects Initial configuration Final thickness profile Blow molding simulation of a gas tank using the membrane element

16 © Fluent Inc. 5/10/2015A16 Fluent Software Training TRN NEKTON  Variable-order finite element method (spectral element method) Ideally suited for laminar, viscous flows with free surfaces  Unstructured quad/hex meshes with solution-based polynomial adaption (2D)  Linear stability analysis for coating applications  Solver of choice for thin film coating flows such as: Slide, slot, roll, curtain, and blade coating Multi-layer coatings Deforming boundaries (rubber-backed rolls, compressible substrates)

17 © Fluent Inc. 5/10/2015A17 Fluent Software Training TRN NEKTON : Coating Flow Analysis  Template-based problem solving: base solution can be parameterized to quickly study changes in: Properties, e.g., Density Viscosity Surface tension Boundary conditions, e.g., Flow rates Web speed Vacuum Geometry, e.g., Slide angle Gap

18 © Fluent Inc. 5/10/2015A18 Fluent Software Training TRN NEKTON : Template Example 2. You can make changes in one panel: 1. Initial solution for slide coater 3. Web angle is automatically changed  significant savings in problem setup and solution time

19 © Fluent Inc. 5/10/2015A19 Fluent Software Training TRN IcePak  IcePak is focused on electronics cooling design: Cooling airflow, heat conduction, convection and radiation heat transfer  The user interface and automatic meshing are tailored for applications such as: Cabinet design Fan placement Board-level design Heat sink evaluation Flow pathlines and temperature distribution in a fan-cooled computer cabinet.

20 © Fluent Inc. 5/10/2015A20 Fluent Software Training TRN  MixSim is a specialized user interface that allows quick and easy set-up of mixing tank simulations.  The tank size, bottom shape, baffle configuration, number and type of impellers, etc. are specified directly.  The mesh and complete problem definition are then automatically created. MixSim  Other features include: Impeller libraries from leading equipment manufacturers Transient sliding mesh, steady-state multiple reference frame models Non-Newtonian rheology

21 © Fluent Inc. 5/10/2015A21 Fluent Software Training TRN MixSim : User Interface

22 © Fluent Inc. 5/10/2015A22 Fluent Software Training TRN Overall Code Structure POLYFLOW case filedata file FLUENT 4.5, FLUENT 5, NEKTON TGrid FIDAP GAMBIT direct input model file results file data file results file Geometries and meshes can be imported from other CAE packages. Data can be exported to other CAE packages for postprocessing. import export import export

23 © Fluent Inc. 5/10/2015A23 Fluent Software Training TRN Long-Term Product Road Map FIDAP POLYFLOW NEKTON FLUENT 4.5 FLUENT 5 GAMBIT Common User Environment “Shared FEM Technology” “Shared FVM Technology”

24 © Fluent Inc. 5/10/2015A24 Fluent Software Training TRN Summary  As your applications for CFD expand, you can benefit from our multiple solver technology.  Our goal is to provide the appropriate (best) solver for each application.  Development of a common interface will allow you to more easily take advantage of different solvers.


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