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FLUENT
Introduction
to Fluent (ppt download)
Fluent User Guide
Getting Started Guide
Magnetohydrodynamics Module
Tutorial Guide
Text Command List
User-Defined Functions
MAKE
SURE /apps/Fluent.Inc/bin IS SET
IN YOUR $PATH IN YOUR .cshrc
MAKE SURE setenv LM_LICENSE_FILE
'7241@cronus' IS IN YOUR .cshrc
Fluent
v12 is on boreas only! Up to 20% faster!
Use /apps/Fluent.Inc/v120/fluent/bin in your $PATH
ANSYS 12.0 FAQs
☞Note: -l fluent_ncpus=X makes the job wait for
licenses
Parallel
Operation
It is extremely important to
determine if your problem will benefit from additional processors (cpu's). Run your problem for a few
iterations with 1 processor. Repeat for 2 and then 4 processors. If you do not
get a corresponding speedup then your problem may be too small to scale well.
If so, do not add additional processors because it may actually slow down your
job performance.
notus/boreas example
Replace X and Y where X is the number of
processors and Y is X divided by 2
(Note: Same as apollo/artemis script except for two bold parts)
Change notusall
to boreasall for boreas
#!/bin/csh
#PBS -q para -l nodes=Y:notusall:ppn=2
–l fluent_ncpus=X
setenv LM_LICENSE_FILE "7241@cronus-b"
cd ~/fueltank
fluent 3ddp -tX
-pethernet -ssh -cnf=$PBS_NODEFILE -g -i
Tank3D.scr > & junk.out
zeus
example
Replace X where X is the number of processors
#!/bin/csh
#PBS -q para -l nodes=zeus -l ncpus=X –l fluent_ncpus=X
setenv LM_LICENSE_FILE "7241@cronus-b"
cd ~/fueltank
fluent 3ddp -tX
-pethernet -g -i Tank3D.scr
> & junk.out
Where Tank3D.scr (a steady state example)
contains:
file rc Tank3D.cas
solve init init
solve it 2
wd Tank3D.dat
yes
exit
yes
Here is an unsteady state example where you
supply X, Y, Z & N:
File rcd jobname.cas
% Reads both Case and
Data job files %
File autosave data-frequency %
Saves the data automatically %
X
% Saves the data automatically at every 'X' time steps %
Solve set time-step Y
% Sets the time step dt = 'Y' sec %
Solve dual-time-iterate
Z
% Total number of time steps %
N
% Number of iterations for each time step %
File wd finaldatafile.dat
% Writes the updated Data file %
Exit
Yes
For technical assistance, email aca-support@fluent.com
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