FLUENT 5.0
Support :
UNIX and Windows
Résumé :
FLUENT 5 is the CFD solver of choice for complex flows ranging from incompressible (lows subsonic) to mildly compressible( transonic) to highly compressible (supersonic and hypersonic) with a convergence-enhancing multigrid method, FLUENT 5 delivers optimum convergence and accuracy for a wide range of follow regimes. The wealth of physical models in FLUENT 5 allows you accurately predict laminar, transitional and turbulent flows, various modes of heat transfer, chemical reaction, multiphase flows and other complex phenomena, with completely unstructured mesh flexibility and solution-based mesh adaption.
General Modeling Capabilities
2-D planar, 2-D axisymmetric, 2-D axisymmetric with swirl, and 3-D flows
Steady-state or transient analysis
All speed regimes (incompressible, subsonic, transonic, supersonic and hypersonic flows)
Laminar, transitional and turbulent flow
Newtonian or non-Newtonian flow
Heat transfer including natural conduction, forced or mixed convection, conjugate (solid/fluid) heat transfer, radiation, and thermical convection in moving solids
Chemical species mixing and reaction, including combustion submodels and surface deposition/reaction models
Free Surface and multiphase (gas-liquid-solid, and liquid-solid) flows
Lagrangian trajectory calculation for dispersed phase ( particles/droplets/bubbles) including coupling with continuous phase
Phase change model melting/freezing applications
Porous media with non-isotropic permeability, inertial resistance, solid heat conduction and porous-face pressure jump conditions
Lumped parameter models for fans, pumps,, radiators, and heat-exchangers
Inertial (stationary or non-inertial (rotating or accelerating) reference frames
Multiple reference frame and sliding mesh options for multiple moving frames
Mixing-plane model for modelling rotor-stator interactions, torque converters and similar turbomachinery applications
Volumetric sources of heat, mass, momentum, and chemical species
Extensive material property database
Mesh Capabilities
Quadrilateral, triangular, hexahedral (brick), tetrahedral, prism (wedge), pyramid, and mixed element meshes
Non-conformal (discontinuous) mesh interfaces allowed
Import of meshes from GAMBIT, GeoMesh, TGrid, preBFC, ICEM/CFD, I-DEAS, PATRAN, NASTRAN, ANSY, Pro/Engineer, STL, PLOT3D, and other formats
Dynamic, solution-based adaptation, including:
Conformal adaption on triangular and tetrahedral meshes
Hanging node adaption and mesh embedding for all element types
Mesh refinement in user-specified regions and adaptive refinement using solution variables, derived quantities (eg., y+, wall proximity) and user-defined field functions
Automatic interpolation of solution after mesh refinement
Mesh coarsening
Mesh smoothing and improvements tools
Mesh manipulation tools (scaling, translation, merging, separation)
Hybrid mesh generation utilities
Numerical Methods
FLUENT 5 offer three choices of solver options. All the solvers in FLUENT 5 are featured by:
Finite-volume method based on fully unstructured meshes
Formulation valid for all speed regimes
Dynamic memory allocation
Single-and double-precision executables
Segregated solver (Update of FLUENT/UNS 4.2)
Pressure-based segregated solution algorithms including SIMPLE, SIMPLEC and PISo
Multiple choice of discretization schemes including first-order upwind, power-law second order upwind, and QUICK schemes
First-order and second-order implicit time discretization schemes
Multiple choices of pressure interpolations schemes including Presto linear, quadratic, and body-force weighted interpolations
Implicit treatment of body forces
Algebraic multigrid (AMG) linear equation solver with V.W and flex cycles; Gausse-Seidel relaxation method
Coupled Solvers (Update of RAMPANT 4.2)
Preconditioning for incompressible and mixed regime flows
Coupled solution for all mean flow qualities
Decoupled (segregated) solution of turbulence, radiation, and user-defined scalar transport equations
Multiple choice of discretization schemes including first-order and second-order upwind schemes
First-order and second-order time discretization schemes with choice of explicit and implicit schemes
Explicit scheme
Multi-stage (Runge-Kutta) time-stepping algorithm
Full Approximation Scheme (FAS) Multigrid, local stepping and implicit residual smoothing convergence acceleration
Explicit global time-stepping for time-accurate solutions
Implicit scheme
Full Newton-type linearization of all fluxes and source term
Algebraic multigrid (AMG) block matrix linear equation solver with V and F cycles; Gauss-Seidel relaxation method
Turbulence Modeling
Spalart-Allmaras one-equation (eddy-viscosity transport) model
Multiple choices of K- ε models including standard k- ε, realizable K- ε and RNG k- ε models
Submodels in k- ε models for buoyancy and compressibility effects
RNG submodels for swirl, low Reynolds number effects (differential viscosity) and analytical formula for Prandtl/Schmidt number for k, ε energy, and species
Full Reynold Stress Model (RSM) including wall-reflection model and linear or quadratic pressure-strain model
Subgrid scale stress models (Smagorinsky and RNG) for Large Eddy Simulation (LES)
Multiple choice of different near-wall modelling options including standard wall functions, non-equilibrium wall functions sensitized to pressure gradient, and two-laver zonal model for k- ε models and RSM
Turbulence suppression in user-specified laminar zones for traditional flow modelling (fixed transition)
Chemical Reaction & Combustion Modeling
Formulation based on multiple species transport equations, including diffusion and reaction source terms$
Finite rate chemistry for N reactions with backward reaction, using:
Arrhenius
Addy-breakup (EBU)
Combined Arrhenius/eddy-breakup models for turbulence-chemistry interaction
Conserved scalar (two mixture fractions) formulation for diffusion-controlled (non premixed) reactions using:
PDF (probability density function) of mixture for turbulence-chemistry interaction
Simple mixed-is-burned model, chemical equilibrium, or flame et model for chemical kinetics
Turbulent premixed combustion moel based on turbulent flame speed closure
Combustion submodels for coal, liquid, gaseous , and mixed fuel types
Pollutant formation models (NOx, soot)
Surface reaction models for chemical vapor deposition (CVD) and other heterogeneous reactions
Built-in database for equilibrium data, thermodynamic properties, standard reaction mechanisms, and mixture composition in gaseous, coal, and liquid fuel systems
User-defined acces to reaction sources/sink terms
Radiation Heat Transfer
Discrete Transfer Radiation Model (DTRM) with participating media
Radiation mesh coarsening option for DTRM
P-1 radiation model with participating/scattering media options
Rosseland model
Gas absorption coefficient dependence on water vapor, carbon dioxide, and particle concentration using WSGG (Weighted sum of gray gases) model
Radiation heat transfer to particles/droplets (P-1 model)
Discrete-Ordinates model for participating radiation including scattering, refraction, specular boundaries, and non gray effects
Radiation heat transfer to paticles/droplets (P-1 and Discrete-Ordinates model)
Multiphase Modeling
Volume Of-Fluid (VOF) multiphase model:
-Gas-liquid or liquid-liquid system modelling for immiscible fluids
-Interface tracking, including surface tension and wall adhesion effects
Two-phaes flow (solid-fluid, liquid-gas) modelling based on Algebraic Slip Mixture (ASM) model
Cavitation inception modelling based on a homogeneous two-fluid model
Lagrangian Dispersed Phase Modeling
Trajectory calculation for particles/droplets/bubbles in steady flows (stationary or rotating frames of reference)
Momentum, heat, and mass transfer coupling with fluid (continuous) phase
Multiple choice of built-in drag laws for spherical and non-spherical particles and stokes-Cunninghams law
Multiple choices of injection types (single, group, surface, user-specified file)
Particle seize distribution through linear distribution or Rosin-Rammler equation
Multiple choice of boundary conditions for particles, including reflection with constant or impact angle-dependent coefficient of restitution, trapping and escape
Optional Trap Condition media
Turbulent dispersion via discrete random-walk model
Optional Particle-cloud model nased on a Gaussian PDF of particle positions
Heat Transfer between fluid and dispersed phase, including convection and radiation effects
Mass transfer between liquid droplets or devolatilizing particles and the gas phase
Evaporation and boiling of liquid droplets
Drying of wet particles
Coal combustion submodels for devolatilization, swelling, and char burnount
Heterogeneous surface reactions between solid particles and fluid phase (kinetic or diffusion limited rates)
Residence time reporting, detailed trajectory reporting, particle erosion/accretion monitoring coal particle diagnostics, heat and mass transfer summaries, particle dispersion display
Trajectory computation via parallel processing on shared memory systems
Boundary Conditions
Multiple flow inlets/exits, with specification of:
-Inlet velocity in terms of Cartesian or cylindrical-polar components, magnitude and direction, magnitude of normal component, or user-specified local coordinate components
-Inlet mass flux
-Inlet static and total pressure, with normal or specified flow angle
-Inlet mass fraction for multicomponent flows
-Inlet fluid static and total temperature
-Inlet turbulent kinetic energy and dissipation rate (with optional input of turbulence intensity and length scale, hydraulic diameter, or viscosity ratio)
-Exit static pressure
Outflow, with specific flow rate weighting
Mass flow outlets
Intake/exhaust fans
Intake/outlet vents
Wall boundaries, with specification of:
-Tangential wall velocity using Cartesian component form or rotational speed
-Shear rates, including slip conditions
-Thermal boundary conditions using heat-flux, temperature or external convection radiation (emissivity), or mixed conditions
-Shear-stress calculation using choice of wall functions in turbulent flown including wall roughness effects
Two-sided walls with optional coupling and specified resistance for production heat transfer
Spatial profiles or inlet or wall boundary conditions for mean and turbulence quantities
Profile functions for fan curves
Sub-grid size inlet specification through volume sources
Symmetry, rotationally periodic boundaries
Axis boundary conditions
Specifified mass flow rate streamwise-periodic boundary conditions
Material Properties
Constant or variable fluid properties including temperature and composition dependence (data pai or piecewise polynomial input)
Comprehensive database containing material properties for standard fluids and solids (user-modifiable), including:
-Standard reaction mechanisms, chemical species mixtures, thermodynamic and kinetic properties
-Particle/droplet data for stand solid, liquid fuels, and coals
Fluid density calculation using ideal gas law or polynomial dependence on temperature; optional Boussinessq treatment of density for buoyant flows
Fluid viscosity calculation using polynomial or power law function of temperature or Sutherlands law
Non-Newtonian fluid models, including power law fluids, carreau fluids, or user-defined law, with temperature-dependent fluid model parameters
Temperature-dependent heat capacity and thermical conductivity in solid regions
Non-isotropic thermal conductivity
Real Gas model for refrigerant and hydrocarbons
User-defined property inputs
User Defined Functions
Interpreted (compiled at runtime) and compiled (compiled in advace and linked at runtime) options
Specification of volumetric sources in continuity, momentum, energy, species, and volume fraction or volume-of-fluid transport equations
Surface and volumetric reaction rates
Definition of custom physical properties
Customized boundary conditions and initial conditions
User-defined scalar transport equations
Creation of custom postprocessing variables
User-specified scattering phase functions for radiation modelling
Body force, drag, and source terms for discrete phase modelling
Parallel Processing
Parallel Processing on shared memory systems (for example, Windows NT, SGI; HP, DEC, Sun and Cray multiprocessors)
Parallel processing on distributed memory systems (for example, IBM, Cray T3D/E and networks of workstations
Domain decomposition method, with grid partitioning tools (e.g METIS)
Utilities for load balancing via LSH third party software
Utilization of vendor-optimized message passing libraries
Interface, Graphics, Postprocessing, and Reporting
Client-server architecture for co-processing and remote execution
Fully interactive graphical and text-based user interface
Journaling and transcripting
Diagnostic and error trapping
Grid checking (validity, quality, seize) , merging, separating, and reordering utilities
Dynamic control of setup, solution, and postprocessing tasks
Summary reports of solver and physical model settings
Flexible units specification (SI units, British units, custom/mixed units)
Dynamic interrupt and restart of calculations
Residual reporting and display
Reporting and monitoring of flux of mass, heat, chemical species
Reporting and monitoring of forces and moments
Computation and reporting of surface integrals and averages
Computation and reporting of volume integrals and averages
Circumferential averages
Time-Averages and RMS reports for LES turbulence modelling
Calculator utility for user-defined field functions
Calculation of gradients (vector and scalar) and derived quantities
Histograms of geometric and solution data
Quantitative XY-Plotting of data
Graphical probing of data
Powerful graphics, flows visualization and animation
On-screen mouse-based view manipulation (rotation, translation, magnification)
Extensive hardcopy options
Data Export
Export of solution data to AVS, Data Explorer, EnSight, Fast, FIELDVIEW, and TECPLOT
Parallelized data export for EnSight and FILDVIEW
Export of FEA data to NASTRAN, PATRAN, and I-DEAS
Online Help and Documentation
Complete hypertext-based on line documentation
User guide, including theory and application
Tutorial guide, with model-specific examples
Validation manual
Training manual
General Modeling Capabilities
2-D planar, 2-D axisymmetric, 2-D axisymmetric with swirl, and 3-D flows
Steady-state or transient analysis
All speed regimes (incompressible, subsonic, transonic, supersonic and hypersonic flows)
Laminar, transitional and turbulent flow
Newtonian or non-Newtonian flow
Heat transfer including natural conduction, forced or mixed convection, conjugate (solid/fluid) heat transfer, radiation, and thermical convection in moving solids
Chemical species mixing and reaction, including combustion submodels and surface deposition/reaction models
Free Surface and multiphase (gas-liquid-solid, and liquid-solid) flows
Lagrangian trajectory calculation for dispersed phase ( particles/droplets/bubbles) including coupling with continuous phase
Phase change model melting/freezing applications
Porous media with non-isotropic permeability, inertial resistance, solid heat conduction and porous-face pressure jump conditions
Lumped parameter models for fans, pumps,, radiators, and heat-exchangers
Inertial (stationary or non-inertial (rotating or accelerating) reference frames
Multiple reference frame and sliding mesh options for multiple moving frames
Mixing-plane model for modelling rotor-stator interactions, torque converters and similar turbomachinery applications
Volumetric sources of heat, mass, momentum, and chemical species
Extensive material property database
Mesh Capabilities
Quadrilateral, triangular, hexahedral (brick), tetrahedral, prism (wedge), pyramid, and mixed element meshes
Non-conformal (discontinuous) mesh interfaces allowed
Import of meshes from GAMBIT, GeoMesh, TGrid, preBFC, ICEM/CFD, I-DEAS, PATRAN, NASTRAN, ANSY, Pro/Engineer, STL, PLOT3D, and other formats
Dynamic, solution-based adaptation, including:
Conformal adaption on triangular and tetrahedral meshes
Hanging node adaption and mesh embedding for all element types
Mesh refinement in user-specified regions and adaptive refinement using solution variables, derived quantities (eg., y+, wall proximity) and user-defined field functions
Automatic interpolation of solution after mesh refinement
Mesh coarsening
Mesh smoothing and improvements tools
Mesh manipulation tools (scaling, translation, merging, separation)
Hybrid mesh generation utilities
Numerical Methods
FLUENT 5 offer three choices of solver options. All the solvers in FLUENT 5 are featured by:
Finite-volume method based on fully unstructured meshes
Formulation valid for all speed regimes
Dynamic memory allocation
Single-and double-precision executables
Segregated solver (Update of FLUENT/UNS 4.2)
Pressure-based segregated solution algorithms including SIMPLE, SIMPLEC and PISo
Multiple choice of discretization schemes including first-order upwind, power-law second order upwind, and QUICK schemes
First-order and second-order implicit time discretization schemes
Multiple choices of pressure interpolations schemes including Presto linear, quadratic, and body-force weighted interpolations
Implicit treatment of body forces
Algebraic multigrid (AMG) linear equation solver with V.W and flex cycles; Gausse-Seidel relaxation method
Coupled Solvers (Update of RAMPANT 4.2)
Preconditioning for incompressible and mixed regime flows
Coupled solution for all mean flow qualities
Decoupled (segregated) solution of turbulence, radiation, and user-defined scalar transport equations
Multiple choice of discretization schemes including first-order and second-order upwind schemes
First-order and second-order time discretization schemes with choice of explicit and implicit schemes
Explicit scheme
Multi-stage (Runge-Kutta) time-stepping algorithm
Full Approximation Scheme (FAS) Multigrid, local stepping and implicit residual smoothing convergence acceleration
Explicit global time-stepping for time-accurate solutions
Implicit scheme
Full Newton-type linearization of all fluxes and source term
Algebraic multigrid (AMG) block matrix linear equation solver with V and F cycles; Gauss-Seidel relaxation method
Turbulence Modeling
Spalart-Allmaras one-equation (eddy-viscosity transport) model
Multiple choices of K- ε models including standard k- ε, realizable K- ε and RNG k- ε models
Submodels in k- ε models for buoyancy and compressibility effects
RNG submodels for swirl, low Reynolds number effects (differential viscosity) and analytical formula for Prandtl/Schmidt number for k, ε energy, and species
Full Reynold Stress Model (RSM) including wall-reflection model and linear or quadratic pressure-strain model
Subgrid scale stress models (Smagorinsky and RNG) for Large Eddy Simulation (LES)
Multiple choice of different near-wall modelling options including standard wall functions, non-equilibrium wall functions sensitized to pressure gradient, and two-laver zonal model for k- ε models and RSM
Turbulence suppression in user-specified laminar zones for traditional flow modelling (fixed transition)
Chemical Reaction & Combustion Modeling
Formulation based on multiple species transport equations, including diffusion and reaction source terms$
Finite rate chemistry for N reactions with backward reaction, using:
Arrhenius
Addy-breakup (EBU)
Combined Arrhenius/eddy-breakup models for turbulence-chemistry interaction
Conserved scalar (two mixture fractions) formulation for diffusion-controlled (non premixed) reactions using:
PDF (probability density function) of mixture for turbulence-chemistry interaction
Simple mixed-is-burned model, chemical equilibrium, or flame et model for chemical kinetics
Turbulent premixed combustion moel based on turbulent flame speed closure
Combustion submodels for coal, liquid, gaseous , and mixed fuel types
Pollutant formation models (NOx, soot)
Surface reaction models for chemical vapor deposition (CVD) and other heterogeneous reactions
Built-in database for equilibrium data, thermodynamic properties, standard reaction mechanisms, and mixture composition in gaseous, coal, and liquid fuel systems
User-defined acces to reaction sources/sink terms
Radiation Heat Transfer
Discrete Transfer Radiation Model (DTRM) with participating media
Radiation mesh coarsening option for DTRM
P-1 radiation model with participating/scattering media options
Rosseland model
Gas absorption coefficient dependence on water vapor, carbon dioxide, and particle concentration using WSGG (Weighted sum of gray gases) model
Radiation heat transfer to particles/droplets (P-1 model)
Discrete-Ordinates model for participating radiation including scattering, refraction, specular boundaries, and non gray effects
Radiation heat transfer to paticles/droplets (P-1 and Discrete-Ordinates model)
Multiphase Modeling
Volume Of-Fluid (VOF) multiphase model:
-Gas-liquid or liquid-liquid system modelling for immiscible fluids
-Interface tracking, including surface tension and wall adhesion effects
Two-phaes flow (solid-fluid, liquid-gas) modelling based on Algebraic Slip Mixture (ASM) model
Cavitation inception modelling based on a homogeneous two-fluid model
Lagrangian Dispersed Phase Modeling
Trajectory calculation for particles/droplets/bubbles in steady flows (stationary or rotating frames of reference)
Momentum, heat, and mass transfer coupling with fluid (continuous) phase
Multiple choice of built-in drag laws for spherical and non-spherical particles and stokes-Cunninghams law
Multiple choices of injection types (single, group, surface, user-specified file)
Particle seize distribution through linear distribution or Rosin-Rammler equation
Multiple choice of boundary conditions for particles, including reflection with constant or impact angle-dependent coefficient of restitution, trapping and escape
Optional Trap Condition media
Turbulent dispersion via discrete random-walk model
Optional Particle-cloud model nased on a Gaussian PDF of particle positions
Heat Transfer between fluid and dispersed phase, including convection and radiation effects
Mass transfer between liquid droplets or devolatilizing particles and the gas phase
Evaporation and boiling of liquid droplets
Drying of wet particles
Coal combustion submodels for devolatilization, swelling, and char burnount
Heterogeneous surface reactions between solid particles and fluid phase (kinetic or diffusion limited rates)
Residence time reporting, detailed trajectory reporting, particle erosion/accretion monitoring coal particle diagnostics, heat and mass transfer summaries, particle dispersion display
Trajectory computation via parallel processing on shared memory systems
Boundary Conditions
Multiple flow inlets/exits, with specification of:
-Inlet velocity in terms of Cartesian or cylindrical-polar components, magnitude and direction, magnitude of normal component, or user-specified local coordinate components
-Inlet mass flux
-Inlet static and total pressure, with normal or specified flow angle
-Inlet mass fraction for multicomponent flows
-Inlet fluid static and total temperature
-Inlet turbulent kinetic energy and dissipation rate (with optional input of turbulence intensity and length scale, hydraulic diameter, or viscosity ratio)
-Exit static pressure
Outflow, with specific flow rate weighting
Mass flow outlets
Intake/exhaust fans
Intake/outlet vents
Wall boundaries, with specification of:
-Tangential wall velocity using Cartesian component form or rotational speed
-Shear rates, including slip conditions
-Thermal boundary conditions using heat-flux, temperature or external convection radiation (emissivity), or mixed conditions
-Shear-stress calculation using choice of wall functions in turbulent flown including wall roughness effects
Two-sided walls with optional coupling and specified resistance for production heat transfer
Spatial profiles or inlet or wall boundary conditions for mean and turbulence quantities
Profile functions for fan curves
Sub-grid size inlet specification through volume sources
Symmetry, rotationally periodic boundaries
Axis boundary conditions
Specifified mass flow rate streamwise-periodic boundary conditions
Material Properties
Constant or variable fluid properties including temperature and composition dependence (data pai or piecewise polynomial input)
Comprehensive database containing material properties for standard fluids and solids (user-modifiable), including:
-Standard reaction mechanisms, chemical species mixtures, thermodynamic and kinetic properties
-Particle/droplet data for stand solid, liquid fuels, and coals
Fluid density calculation using ideal gas law or polynomial dependence on temperature; optional Boussinessq treatment of density for buoyant flows
Fluid viscosity calculation using polynomial or power law function of temperature or Sutherlands law
Non-Newtonian fluid models, including power law fluids, carreau fluids, or user-defined law, with temperature-dependent fluid model parameters
Temperature-dependent heat capacity and thermical conductivity in solid regions
Non-isotropic thermal conductivity
Real Gas model for refrigerant and hydrocarbons
User-defined property inputs
User Defined Functions
Interpreted (compiled at runtime) and compiled (compiled in advace and linked at runtime) options
Specification of volumetric sources in continuity, momentum, energy, species, and volume fraction or volume-of-fluid transport equations
Surface and volumetric reaction rates
Definition of custom physical properties
Customized boundary conditions and initial conditions
User-defined scalar transport equations
Creation of custom postprocessing variables
User-specified scattering phase functions for radiation modelling
Body force, drag, and source terms for discrete phase modelling
Parallel Processing
Parallel Processing on shared memory systems (for example, Windows NT, SGI; HP, DEC, Sun and Cray multiprocessors)
Parallel processing on distributed memory systems (for example, IBM, Cray T3D/E and networks of workstations
Domain decomposition method, with grid partitioning tools (e.g METIS)
Utilities for load balancing via LSH third party software
Utilization of vendor-optimized message passing libraries
Interface, Graphics, Postprocessing, and Reporting
Client-server architecture for co-processing and remote execution
Fully interactive graphical and text-based user interface
Journaling and transcripting
Diagnostic and error trapping
Grid checking (validity, quality, seize) , merging, separating, and reordering utilities
Dynamic control of setup, solution, and postprocessing tasks
Summary reports of solver and physical model settings
Flexible units specification (SI units, British units, custom/mixed units)
Dynamic interrupt and restart of calculations
Residual reporting and display
Reporting and monitoring of flux of mass, heat, chemical species
Reporting and monitoring of forces and moments
Computation and reporting of surface integrals and averages
Computation and reporting of volume integrals and averages
Circumferential averages
Time-Averages and RMS reports for LES turbulence modelling
Calculator utility for user-defined field functions
Calculation of gradients (vector and scalar) and derived quantities
Histograms of geometric and solution data
Quantitative XY-Plotting of data
Graphical probing of data
Powerful graphics, flows visualization and animation
On-screen mouse-based view manipulation (rotation, translation, magnification)
Extensive hardcopy options
Data Export
Export of solution data to AVS, Data Explorer, EnSight, Fast, FIELDVIEW, and TECPLOT
Parallelized data export for EnSight and FILDVIEW
Export of FEA data to NASTRAN, PATRAN, and I-DEAS
Online Help and Documentation
Complete hypertext-based on line documentation
User guide, including theory and application
Tutorial guide, with model-specific examples
Validation manual
Training manual