ANSYS, Inc. Release Notes
FLUENT |
ANSYS, Inc. Release Notes
The following is a list of known limitations in ANSYS FLUENT 13.0.
File import/export
Data export to Mechanical APDL result file is not available on the linx64 and linia64 platforms. (Mechanical APDL data export to .cdb file is available on all platforms)
When exporting EnSight Case Gold files for transient simulations, the solver cannot be switched between serial and parallel, and the number of compute nodes cannot be changed for a given parallel run. Otherwise, the exported EnSight Case Gold files for each time step will not be compatible
EnSight export with topology changes is not supported
To properly view Fieldview Unstructured (.fvuns) results from a parallel ANSYS FLUENT simulation
Mesh files must be exported from the parallel solver via the TUI command fieldview-unstruct-grid
Mesh and data files should all be exported from parallel ANSYS FLUENT sessions with the same number of nodes
Import of 3D ABAQUS files in .odb format is not available on the IBM platform
Tecplot file import does not support the Tecplot360 file format
Import of ANSYS CFX definitions or results files is no longer supported on the hpia64 platform
Mesh
Boundary zone extrusion is not possible from faces that have hanging nodes
The following features are incompatible with polyhedral cell types:
Moving/deforming mesh
Models
ANSYS FLUENT supports the Chemkin II format for Oppdif flamelet import only
The surface-to-surface (S2S) radiation model does not work with sliding and moving/deforming meshes
The work pile algorithm is not compatible with the wall film boundary condition
The shell conduction model is not applicable on moving walls
The heat exchanger model is not compatible with mesh adaption
The FLUENT/REACTION DESIGN KINetics coupling is not available on the win64 platform
DO-Energy coupling is recommended for large optical thickness cases (> 10) only
FMG initialization is not available with the shell conduction model
FMG initialization is not compatible with the unsteady solver
The MHD module is not compatible with Eulerian multiphase models
Bounded 2nd order discretization in time is not compatible with moving and deforming mesh
Parallel processing
These features are currently unavailable in the parallel solver:
Discrete transfer radiation model (DTRM)
Continuous Fiber Model (CFM) add-on module
Data export to non-native formats other than EnSight, FIELDVIEW, Tecplot, and the generic heat flux data file
Platform support and drivers
Windows machines using HPMPI are required to be logged onto a network domain. For shared memory parallel runs on a machine disconnected from the network, MPICH2 is recommended
ANSYS FLUENT 13 is not compatible with the job scheduler on HPC Server 2008 with the packaged version of HPMPI. The default MPI (MSMPI) should be used
The minimum OS requirements for Linux are SLES 10 or Red Hat Enterprise 5.0
The path name length to the cpropep.so library (including the lib name) is limited to 80 characters. (Linux Opteron cluster using Infiniband interconnect only)
OS level 5300-07 (maintenance level 7) or higher is required on the IBM AIX platform
Visit the User Services Center for the latest Windows graphics FAQ. Version 2.0 or higher of .NET Framework must be installed in order to run ANSYS FLUENT on the winx64 platform
Please view the FLUENT Product Page on the User Services Center for more information.
Solver
The non-iterative time advancement (NITA) solver is applicable with only a limited set of models. See the ANSYS FLUENT User's Guide for more details.
NITA (using fractional time step method) is not compatible with porous media
The following models are not available for the density-based solvers:
Volume-of-fluid (VOF) model
Multiphase mixture model
Eulerian multiphase model
Non-premixed combustion model
Premixed combustion model
Partially premixed combustion model
Composition PDF transport model
Soot model
Rosseland radiation model
Melting/solidification model
Enhanced Coherent Flamelet model
Inert model: transport of inert species (EGR in IC engines)
Dense discrete phase model
Shell conduction model
Floating operating pressure
Spark ignition and auto-ignition models
Physical velocity formulation for porous media
Selective multigrid (SAMG)
The following models are not available for the pressure-based solver:
Non-reflecting boundary conditions
The pressure-based coupled solver is not available with the following features:
Porous jump boundary condition
Fixed velocity
User-defined functions (UDFs)
The DEFINE_RW_FILE macro is not supported on the Windows platform
Interpreted UDFs cannot be used while running in parallel with an Infiniband interconnect. The compiled UDF approach should be used in this case
Third-party software
FLUENT-Platform LSF integration is not supported on the MS Windows platform
FLUENT-SGE integration is supported only on the AIX 5.3 and Linux platforms
Wave and GT-Power coupling are available only with stand-alone ANSYS FLUENT and not in the Workbench environment
Wave 8.0 does not support IBM platforms
ANSYS FLUENT 13 uses the CHEMKIN-CFD KINetics library 2.4. This version no longer supports the hpia64 and linia64 platforms
GT-Power is supported on the 32- and 64-bit Linux and Windows platforms, as well as the IBM platform
Other
The IRIS Image and HPGL hardcopy formats are no longer supported in ANSYS FLUENT