Hello, my question is based on a example : I study an airfoil for multiple configurations where incidence varies. How could I automatically (i.e. in batch mode) change my value then run the solver with the new def file ? The goal is to solve multiple incidence configuration during week end without assistance ?

Thanks a lot for your answers

Hi,

You can set up multiple CCL files and write them to the def file with the cfx5cmds command. If you want to get really tricky you could write the CCL files as part of the script, but I generally just prepare the CCL files in advance and use a batch file to run the multiple cases.

Glenn Horrocks

Hi, thank you for the answer Mr Horrocks but could you give me your script for example ? Because the help concerning commands is not very detailed... and I search such an example !

Thank you

I usually generate a bunch of def files with different boundary conditions, then run them in a batch by perl script. If you do not know how to set batch mode, the following is an example (change path and version accordingly). You can use previous result as initial field as well. Get more details by typing "cfx5solve -help" in the command window.

Put the script in ***.pl, then run it in command window: perl ***.pl =================================== #! perl -w use strict;

my $solver = 'C:\Progra~1\ANSYSI~1\v110\CFX\bin\cfx5solve.exe'; die "Unable to find program '$solver'" if ! -f $solver;

system "$solver -def ******.def -par-dist \"machine1,machine2\" -start-method \"MPICH Distributed Parallel for Windows\""; ====================================

Hi,

It is described in detail in the documentation, see the modelling manual. Below is a script I ran yesterday:

cfx5cmds -write -definition Engine.def -text Engine_002.ccl cfx5solve -definition Engine.def -start-method "MPICH Distributed Parallel for Windows" -par-dist "wswr0076,wswr0001,wswr0009,wswr0010" -partition 4

The first line (cfx5cmds) writes a new ccl file into the def file, the second line (cfx5solve) runs it using distributed MPICH for windows over 4 machines.

Bian has shown a more advanced way of doing it using perl script and it provides much greater flexibility, but you need to know the basic command line syntax (and perl!) before you should try doing it in perl.

Glenn Horrocks

Thank you Bian and Glenn for your help !

After all def files are created, the only place needs change in the script is the last line for cfx5solve. More lines of cfx5solve could be added for batch run.

No particular perl knowledge is required. command line syntax can be obtained from help manual.