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Fluent, Fidap and Gambit Software at NCSA

This page provides information about the environment settings that the user must include in their .cshrc file in order to use Fluent, Fidap and Gambit. In addition, it is recommended that the user sends an email to flow@ncsa.uiuc.edu indicating their intent to use this software. The login of the user will then be included in the software access list. This information is essential for deciding the number of licenses that NCSA must purchase every year, for the use of these commercial packages.

If you have any questions about the information on this page, please email flow@ncsa.uiuc.edu.

Fluent

Fluent is a general purpose package for modeling fluid flow and heat transfer. It can simulate two-/three-dimensional, steady/unsteady, compressible/incompressible flows in structured and unstructured grids. The Mach number of Fluent simulation ranges from subsonic to hypersonic. Its capabilities include simulating non-isothermal flows, disperse phase/droplets, combustion and radiation heat transfer, and flow-through porous media. The current version of Fluent 6 is version 6.3.26.

To use Fluent6 on NCSA's Intel 64 Linux cluster (Abe), add the following line to the end of the .soft file in your home directory:

+Fluent-6.3.26

To start Fluent6 from the command line, you can specify the dimensionality of the problem (2D or 3D), as well as the precision of calculation (single or double).

fluent 2d runs the two-dimensional, single-precision solver
fluent 3d runs the three-dimensional, single-precision solver
fluent 2ddp runs the two-dimensional, double-precision solver
fluent 3ddp runs the three-dimensional, double-precision solver

Script for Running Fluent Batch Jobs on Intel 64 Linux cluster (Abe) at NCSA

A copy of this script may be obtained from $FLUENT_HOME/NCSA-Example-Scripts directory.

#!/bin/tcsh
#  Sample Batch Script for running serial/parallel Fluent jobs on NCSA's Intel 64 Linux cluster (Ab
e)

#  Please save this script into a file called (Fluent.script) and Submit this script using the comm
and: qsub Fluent.script
#
#  Use the "qstat" command to check the status of a job.
#
# The following are embedded QSUB options. The syntax is #PBS (the # does
# _not_  denote that the lines are commented out so do not remove).
#
# walltime : maximum wall clock time (hh:mm:ss)
#PBS -l walltime=00:15:00
#
# nodes: number of 8-core nodes
#   ppn: how many cores per node to use (1 through 8)
#       (you are always charged for the entire node)
#PBS -l nodes=2:ppn=3
#
# export all my environment variables to the job
#PBS -V
#
# job name (default = name of script file)
#PBS -N testjob
#
#
# filename for standard output (default = .o)
# at end of job, it is in directory from which qsub was executed
# remove extra ## from the line below if you want to name your own file
###PBS -o testjob.out
#
# filename for standard error (default = .e)
# at end of job, it is in directory from which qsub was executed
# remove extra ## from the line below if you want to name your own file
###PBS -e testjob.err
#
# End of embedded QSUB options
#
# set echo               # echo commands before execution; use for debugging
#
#mkdir MyRun                            # Create a directory for your runs
#cd MyRun                               # cd to the MyRun directory
#cp $HOME/my_default_input_files .      # Copy your relevant fluent files
                                        # from your home directory here

#The following is a generic command. In order to get this command working;
#please decide if you want to run the 2d, 2ddp, 3d OR 3ddp solver and
#please use ONLY one of the options in the <> shown below
#The option (-g) supresses running the GUI in the background.
#The Option (-t6) specifies the no. of processors to be used.
#The option (-i) directs Fluent to read an input file (Fluent.in).
#A sample inputfile could be found on $FLUENT_HOME/NCSA-Example. 
#The option (>&) directs Fluent to print out a copy of all the activities
#that would have been printed out on the console of the GUI, if it were active,
#on an output file (Fluent.out) for checking out your calculations.

fluent <2d|2ddp|3d|3ddp>  -g -t6 -i Fluent.in >& Fluent.out

The Fluent6 User's Guide is located in the /usr/apps/cfd/Fluent-6.3.26/fluent6.3/help directory on the Intel 64 Linux cluster (Abe). In addition to html documents, PDF formated documents are available as well.

Fluent is a product of Fluent Inc.

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Gambit

Gambit is an integrated preprocessor for CFD analysis. It can be used a third-party CAD/CAE package. The current version of Gambit is 2.4.6 on the Intel 64 Linux cluster (Abe). The environment required by Gambit is the same as the one required by Fluent. Therefore, refer to the Fluent section on how to add the path in the .cshrc file.

Once the environment is set up, enter the following command:

gambit [option1 option2]

to start Gambit.

The command

gambit -help

displays the available start-up options.

The Gambit User's Guide is located in the /usr/apps/cfd/Fluent-6.3.26/gambit2.4/help directory on the Intel 64 Linux cluster (Abe) In addition to html documents, PDF formatted documents are available as well.

Gambit is a product of Fluent Inc.

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FIDAP

FIDAP is a fluid dynamics analysis package that uses the finite element method to simulate many classes of incompressible and compressible fluid flows. Possible simulations include two-dimensional, axisymmetric and three-dimensional steady state or transient simulations in complex geometries including the effects of temperature and the presence of chemical species. Multi-phase and turbulent flows can also be simulated. FIDAP has been officially merged with Fluent. The current version of FIDAP is 8.7.4 on the Intel 64 Linux cluster (Abe). The environment required by FIDAP is the same as the one required by Fluent. Therefore, refer to the Fluent section on how to add the path in the .cshrc file.

The Fidap User's Guide is located in the /usr/apps/cfd/Fluent-6.3.26/fidap8.7/help directory on the Intel 64 Linux cluster (Abe). In addition to html formats, PDF formatted documents are available as well.

FIDAP is a product of Fluent Inc..

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