how to link a C program to ANSYS CFX ?

Mohamed911 · June 16, 2021, 07:29

Hello,
I am currently working on an axial pump. The original geometry didn't perform as well as I expected, so I plan to improve its performance. But all the ANSYS tools I tried either didn't work or didn't give me control over the variables I wanted, so I decided to use C code.
Is there any way to link the C code to Ansys CFX?
Thank you very much.

ghorrocks · June 16, 2021, 07:54

That depends on what you are trying to do. CFX has a C++ interface for reading and writing meshes. The solver has a user fortran interface, and the whole thing can be scripted using various text files (session files, CCL etc) so you can automate CFX by writing these text files. Writing text files can be done in just about any language.

Mohamed911 · June 16, 2021, 08:38

first, the pump parts are made using Bladegen, then imported to Turbogrid for meshing, after that setup, and CFD-post.

I'm using genetic algorithms, so all the process should be done automatically

ghorrocks · June 16, 2021, 08:42

In that case it sounds like you want to write something which generates the input command files for Turbogrid, CFX-Pre, Solver and CFD-Post and then calls the command line to start those packages. This can be done in C or just about any other language. It is just generating text files and then running executables from the command line.

June 16, 2021, 07:29	how to link a C program to ANSYS CFX ?	#1
Mohamed911 Member Join Date: Dec 2019 Posts: 31 Rep Power: 6	Hello, I am currently working on an axial pump. The original geometry didn't perform as well as I expected, so I plan to improve its performance. But all the ANSYS tools I tried either didn't work or didn't give me control over the variables I wanted, so I decided to use C code. Is there any way to link the C code to Ansys CFX? Thank you very much.

June 16, 2021, 07:54		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	That depends on what you are trying to do. CFX has a C++ interface for reading and writing meshes. The solver has a user fortran interface, and the whole thing can be scripted using various text files (session files, CCL etc) so you can automate CFX by writing these text files. Writing text files can be done in just about any language. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

June 16, 2021, 08:42		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	In that case it sounds like you want to write something which generates the input command files for Turbogrid, CFX-Pre, Solver and CFD-Post and then calls the command line to start those packages. This can be done in C or just about any other language. It is just generating text files and then running executables from the command line. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

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June 16, 2021, 08:38		#3
Mohamed911 Member Join Date: Dec 2019 Posts: 31 Rep Power: 6	first, the pump parts are made using Bladegen, then imported to Turbogrid for meshing, after that setup, and CFD-post. I'm using genetic algorithms, so all the process should be done automatically