fluent product presentation - pudn.comread.pudn.com/downloads150/doc/647125/2.pdf · fluent product...

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WANG XiaoTechnical ManagerFluent Asia Pacific

June 12, 2006

2006 CFD Summit Share . Inspire . Learn . Connect

FLUENT Product Presentation

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Agenda

FLUENT 6: Release History

Next Release: FLUENT 6.3Current StatusNew Core FunctionalityOther Enhanced Areas

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Agenda



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FLUENT 6 Release History

FLUENT 6.0Dec 2001

FLUENT 6.1Feb 2003

FLUENT 6.2Mar 2005

FLUENT 6.3Fall 2006

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5

Agenda



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FLUENT 6.3: Current Status

New feature versionImportant new core numerics functionality Enhanced physical modeling capabilitiesCustomer-requested enhancements

Beta testing began in September 2005Available at http://www.fluentusers.com/fluent63_beta/

Release is estimated for Fall 2006

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Agenda


Future Plans: FLUENT 6.3Current StatusNew Core Numerics FunctionalityOther Enhanced Areas

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FLUENT 6.3

New Core Numerics Functionality

FLUENT 6.3 Draft Documentation is available athttp://www.fluentusers.com/fluent63_beta/

FLUENT 6.2 FLUENT 6.3

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FLUENT 6.3

New Core Numerics FunctionalityPressure-based coupled solver

Improved convergence and robustness for skewed/stretched meshes and “stiff” problemsConvergence rates not sensitive to mesh sizeLittle need to change relaxation factorsAbility to switch on-the-fly to fully segregated solver

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FLUENT 6.3 – Intake Manifold

Pressure-Based Coupled Solver

3.5800Segregated1.4150Coupled

Time (hours)

IterationsPressure-Based Solver

0.00

0.20

0.40

0.60

0.80

1.00

1.20

1.40

Carbue

torInl

et1Inl

et2Inl

et3Inl

et4Inl

et5Inl

et6Inl

et7Inl

et8

Mas

s Fl

ow R

ate

(kg/

s) CoupledSegregated

Contours of Static Pressure

651K Cells、K-Epsilon、Ideal-Gas LawMach Number:0.5

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Position

Neg

ativ

e P

ress

ure

Coe

ffici

ent

FLUENT 6.3 – Drag Prediction for DLR-F4

Pressure-Based Coupled Solver

2.21503.5Pressure-Based Coupled

11.89004.0Density-Based Implicit

3.18002.2Pressure-BasedSegregated

Time to convergence

[h]

Iterations to convergence

Memory [GB]

SolverMach Number = 0.75Reynolds Number = 3e6

Angle of Attack = 2o

η = 0.50+ Density Based+ Pressure Based+ Pressure Based

Coupled

1.8 M Hex, RKE, Ideal Gas

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FLUENT 6.3

New Core Numerics FunctionalitySupport for polyhedral meshes

Automatic cell agglomeration in the solverReduces original tetrahedral mesh by 3-5x

Results in faster convergenceCell skewness-based agglomeration

Improves mesh qualityAbility to examine mesh qualityAbility to use built-in tools to manipulate mesh

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13

FLUENT 6.3 - F18

Polyhedral Mesh


Original tet/hybrid mesh: 220K cellsNew polyhedral mesh: 58K cells

Mesh

Density-Based Coupled-Implicit, Inviscid Euler Solution

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FLUENT 6.3 - Scrubbers for Flue Gas Clean-up

Polyhedral Mesh

Courtesy of Austrian Energy and Environment AG, Austria and the Institute for Process Technology & Environmental Protection,

University of Loeben, Austria

Original tet/hybrid mesh: 1.25M cellsNew polyhedral mesh: 250K cells

External Mesh Mesh in the Spray Bank

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FLUENT 6.3 - Scrubbers for Flue Gas Clean-up

Polyhedral Mesh

Particle Tracks Colored by Particle Diameter

Contours of SO2 Mass Fraction on 4 Slices Within the Scrubber

Courtesy of Austrian Energy and Environment AG, Austria and the Institute for Process Technology & Environmental Protection,

University of Loeben, Austria

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Agenda


Future Plans: FLUENT 6.3Current StatusNew Core Numerics FunctionalityOther Enhanced Areas

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FLUENT 6.3

Other Enhanced Areas

Moving MeshSolverParallelTurbulencePorous MediaReacting Flows MultiphaseDPMRadiationReporting and Post-Processing

Other General FeaturesAdd-On Modules

Population BalanceFuel Cells

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FLUENT 6.3

Moving MeshSliding Mesh

Many-to-many sliding interfacesCreate/delete using dynamic mesh events

Dynamically switch from MRF to sliding meshRetain the MRF solution as an initial guess

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FLUENT 6.3

Moving MeshDynamic Mesh

Dynamic mesh for steady-state applications

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FLUENT 6.3 – Check Valve

Steady-State Dynamic Mesh

Whole Geometry

Valve Seat Area

0.2515

0.2520

0.2525

0.2530

0.2535

0.2540

0.2545

0.2550

0.2555

1.50E+04 1.60E+04 1.70E+04 1.80E+04 1.90E+04

Iteration Number

Valv

e Li

ft (m

m)

0.00.10.20.30.40.50.60.70.80.91.0

0.23 0.24 0.25 0.26 0.27 0.28

Lift (mm)

Forc

e (N

)

Aerodynamic forceSpring force


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Dynamic Mesh Dynamic mesh for steady-state applications

FLUENT 6.3

Moving Mesh

More straightforward user-defined motionUser-defined boundary deformationExtrusion of user-defined node motion on a surface

2.5D model

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FLUENT 6.3 – Wing Surface

User-Defined Boundary Deformation

Contours ofAbsolute Pressure

Mesh Motion with Contours of Absolute Pressure

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FLUENT 6.3

Moving MeshDynamic Mesh

Dynamic mesh for steady-state applicationsMore straightforward user-defined motion

User-defined boundary deformationExtrusion of user-defined node motion on a surface

2.5D modelMore convenient in-cylinder modeling

Absolute crank angle as time unit

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FLUENT 6.3

SolverGeneral Solver

Improved efficiency for transient flows Alternative convergence criteria

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FLUENT 6.3 – 3D Delta Wing

Alternative Convergence Criteria

05000

10000150002000025000

Absolute Relative Combined None

Total Iterations

XY Plot of Static Pressure

142009726 9112

25000

Contours of Static Temperature

RelativeAbsolute

Combined None

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FLUENT 6.3

SolverGeneral Solver

Improved efficiency for iterative time advancementAlternative convergence criteria

Diagnostic tool for checking initial case settingsCase Check

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FLUENT 6.3 – Example Recommendations

Case Check

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FLUENT 6.3

SolverDensity-Based Solver

Improved shock capturingAdvection Upstream Splitting Method plus (AUSM+) scheme

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FLUENT 6.3 – Supersonic Moving Shock

AUSM+ Scheme

Roe-FDS AUSM+

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FLUENT 6.3

SolverDensity-Based Solver

Improved shock capturingAdvection Upstream Splitting Method plus (AUSM+) scheme

Improved accuracy and convergence for skewed and stretched meshes

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FLUENT 6.3 – 2D Driven Cavity

Improvements for Skewed MeshesMesh Size: 204,800 tri cellsMax Aspect Ratio: 200,000Max Skew: 0.999Re = 400

Convergence History

Streamline Contours

StretchedUn-Stretched

U-Velocity at Centerline

Mesh Detail

Highly-Skewed Cells

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FLUENT 6.3

ParallelParallel File Read/Write

Speed-up in data file read/writeSpeed-up in case file write

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FLUENT 6.3

Parallel Data File Write

9.834

5.282Xeon/GigE

5.612Opteron/Infiniband

6.334

6.68

Speed-upFLUENT 6.3 /FLUENT 6.2

Number of CPUsPlatform and Interconnect

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FLUENT 6.3

ParallelParallel File Read/Write

Speed-up in data file read/writeSpeed-up in case file write

Other Parallel EnhancementsAdditional flexibility for load balance management

Assignment of selected zones and/or registers to specific parallel partitions

Ability to read hexcore meshes directly into parallel

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FLUENT 6.3

TurbulenceTurbulence

Two-equation RANS models for DESNew time statistics for LESRSM improvements for low-Re simulationsUser-defined wall functions for k-epsilon models

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FLUENT 6.3

Porous MediaPorous Media

Moving porous mediaImproved stability for anisotropic porous media

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FLUENT 6.3

Reacting FlowsReacting Flows

Increased limits: 300 species and 1500 reactions Unsteady laminar flamelets for slow chemistry

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FLUENT 6.3 – Competitive Liquid Reactions

Unsteady Laminar Flamelets

Percent Conversion of Species D

A B+D

H+ + OH- ——> H2O(A) (B) (P1)

H+ + CH3C(OCH3)2CH3 ——> H+ + CH3COCH3 + 2CH3OH(A) (D) (A) (P2) (P3)

K1

K2

K1 = 1.4e8 m3/mol.sK2 = 0.673 m3/mol.s

3.5%12.6%22.4%Unsteady Flamelet

4.4%12.9%19.5%PDF Transport

16.64.142.1Inlet Jet Velocity (m/s)

Contours of Turbulent Kinetic Energy

Reactions

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FLUENT 6.3

Reacting FlowsReacting Flows

Increased limits: 300 species and 1500 reactions Unsteady laminar flamelets for slow chemistry

In-Cylinder Modeling EnhancementsIgnition delay model for partially-premixed combustionLaminar flame speeds for gasolineDiesel material

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FLUENT 6.3

Reacting FlowsPollutants

Selective non-catalytic reduction of NOx (SNCR) through urea injectionSOx formation model

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FLUENT 6.3 – SOx Formation in a Combustor

SOx

Whole Geometry

Inlet Geometry

Contours of SO2 Mass Fraction

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FLUENT 6.3

MultiphaseAll Multiphase Models

Compatible with shell conductionImproved accuracy for transient simulations

2nd-order time discretization scheme

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FLUENT 6.3 –Flow Around a Cylinder

Second Order Time Discretization

cylinder

water

air

VOF with LES and NITA Time-Averaged Water Elevation Behind the Cylinder

FLUENTExperimental Data

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FLUENT 6.3

MultiphaseEulerian Multiphase

Compressible Eulerian multiphase Both gas and liquid phases

Mass flow rate inlet boundary conditionNew options for modeling slow granular flowCompatible with the mixing plane model

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FLUENT 6.3

MultiphaseVOF

Improved stability for flows with high viscosity ratiosCICSAM

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FLUENT 6.3 –Nylon Mold-Filling

CICSAM

Animation of the Nylon-Air Interface During Filling

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FLUENT 6.3

MultiphaseVOF

Improved stability for flows with high viscosity ratiosCICSAM

User-defined wall contact angle

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FLUENT 6.3

Discrete PhaseDiscrete Phase Model

Multicomponent vaporization of particles/dropletsCoupling between multicomponent droplets and the continuous phase

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FLUENT 6.3 – Droplet Vaporization

Multicomponent Droplets

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FLUENT 6.3

Discrete PhaseDiscrete Phase Model

Multicomponent vaporization of particles/dropletsCoupling between multicomponent droplets and the continuous phase

New injection optionsMoving surfaces Surface normals

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FLUENT 6.3 – Store Separator

New Injection Options

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FLUENT 6.3

Real Gas ModelReal Gas Model

Ability to model multiple species in a real gasNIST real gas modelUser-defined real gas model

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FLUENT 6.3

RadiationSurface-to-Surface Radiation

Increased applicabilitySupport for axisymmetric casesMultiple cell zones in an enclosureSpecification of participating flow boundaries

Faster and more efficient calculationNew surface clustering algorithm

Supports adaption as well as hexcore and Harpoon meshesNew view factor storage format

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FLUENT 6.3 – Small Underhood Case

New Surface Clustering Algorithm

40 sec1 min 36 sec413 sec40 sec29 sec1 min 50 secSerial

New Algorithm –17593 clusters

Old Algorithm –10162 clusters

Number of Processors

Time for Surface Cluster Writing (wall clock time)

New S2S Model DO Model

Contours of Static Temperature

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FLUENT 6.3 – Small Underhood Case

New Format for Viewfactor Files

15.48 Mb17.24 MbFile Size

37 sec3 min 50 sec8

18 sec1 min 28 sec4

9 sec1 min 25 sec2

7 sec1 min 7 secSerial

New FormatOld FormatNumber of Processors

Time to Read Files into FLUENT 6.3

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FLUENT 6.3

RadiationSurface-to-Surface Radiation

Increased applicabilitySupport for axisymmetric casesMultiple cell zones in an enclosureSpecification of participating flow boundaries

Faster and more efficient calculationNew surface clustering algorithm

Supports adaption as well as hexcore and Harpoon meshesNew view factor storage format

Ability to post-process incoming incident radiation

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FLUENT 6.3

RadiationDiscrete Ordinates

Improved efficiency for very high optical thicknesses (>10)Coupled solution of discrete ordinates and energy equationsGray and non-gray models

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FLUENT 6.3

User-Defined FeaturesUser-Defined Scalars

Increased flexibility Ability to solve UDSs inside solidsAbility to select UDS for specific zonesAbility to specify flux function and unsteady hooks per UDSAnisotropic diffusivity for UDSs

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FLUENT 6.3 – Drug-Eluting Stent

Anisotropic Diffusivity

1 hr

Drug Distribution in the Vessel Wall

12.5 hr 25 hr

Mesh

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FLUENT 6.3

User-Defined FeaturesUser-Defined Scalars

Increased flexibility Ability to solve UDSs inside solidsAbility to select UDS for specific zonesAbility to specify flux function and unsteady hooks per UDSAnisotropic diffusivity for UDSs

User-Defined FunctionsExecute at exit UDF hookAbility to associate multiple UDFs to a single hook

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FLUENT 6.3

Post-Processing and ReportingReports and Monitors

New report typesStandard deviationVolume flow rateMinimum and maximum value in a cell zoneCenter of pressure on walls

Write report results to a fileSpecify monitor interval for surface and volume monitorsRestrict histograms to specific zones

Post-ProcessingColormap label control

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FLUENT 6.3

Other General FeaturesData Import/Export

Improved data import/export format compatibilityincluding ANSYS cdb format

Export polyhedral cells to both EnSight and FieldviewExport particles and pathlines in EnSight formatSupport for Tecplot export in the parallel version of FLUENT

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FLUENT 6.3

Other General FeaturesImproved Usability for the Text User Interface

Command HistoryCommand Line Editing

MiscellaneousLog10 operator for custom field functionsAppend autosave filenames with the flow time

Platform SupportWindows 64-bit support for Opteron and Xeon EM64T

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Future Plans: FLUENT 6.4

New feature versionPlanning is currently underwayDevelopment will start this summerRelease is targeted for early 2008

FLUENT 6.3

FLUENT 6.0

FLUENT 6.1

FLUENT 6.2

FLUENT 6.4

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Agenda


Next Release: FLUENT 6.3Current StatusNew Core Numerics FunctionalityOther Enhanced Areas

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Conclusion

FLUENT 6 continues to provide new and improved functionality in many areas

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Thank You

Please pick up a copy of the “New Features in FLUENT 6.3” document available at the registration table or at the FLUENT product table in the CFD pavilion

fluent product presentation - pudn.comread.pudn.com/downloads150/doc/647125/2.pdf · fluent product...

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