what is the best way

adam2008 · May 20, 2011, 12:46

I finished a conjugate CFD simulation using CFX. Now I want to use the thermal results (temperature) of solid to do a stress analysis. What is the best way to do it in Workbench or Ansys?

Thanks

ghorrocks · May 21, 2011, 08:55

Workbench is designed so data like this can be easily transferred between solvers. But either will be able to do it.

adam2008 · May 21, 2011, 13:32

thanks. Can you give me some keywords so that I can search in workbench help? It looks like workbench needs a project start from CAD, then meshing, then solving. I don't know how I can import my data (mesh information and temperature) to setup a workbench project. Thanks again

ghorrocks · May 22, 2011, 20:43

Using workbench to join solvers is called coupling. A key aplication of it is fluid-structure interaction or FSI where an FEA solver is coupled to a CFD solver.

adam2008 · May 23, 2011, 00:40

thanks again. but I guess I should clarify my problem.

I have a CFX result which includes both fluid domain result and solid domain result, and I can export only the solid result part to Ansys Multifield file (say file is named as solid_temp.cdb file) in CFX solver. I found that this solid_temp.cdb basically has everything (mesh, temperature etc) to do a thermal stress analysis. I already figured out a way to conduct a stress analysis with this cdb file in Ansys by manipulating the file and writing an Ansys script, but I am interested to know, how to DIRECTLY use this file in Ansys-workbench to do a stress analysis? I tried to find a way in workbench, but it always looks to me that I have to build CAD, then mesh, then setup in workbench so that I can do a structural analysis. But in my situation, I don't want to build a CAD/mesh etc, I just want to utilize solid mesh/temperature results from CFX and use them directly in workbench to generate a stress result. Can I do that? Where should I look for related information in Help?

thanks a lot

baserinia · May 28, 2011, 22:33

Quote:

Originally Posted by adam2008

I can export only the solid result part to Ansys Multifield file (say file is named as solid_temp.cdb file) in CFX solver.

I'm not completely sure, but as far as I know, there is no way to do this in CFX but using .cdb files, which is not very elegant. I haven't tried ANSYS 13 though.

May 20, 2011, 12:46	what is the best way	#1
adam2008 New Member Join Date: Jul 2009 Posts: 25 Rep Power: 17	I finished a conjugate CFD simulation using CFX. Now I want to use the thermal results (temperature) of solid to do a stress analysis. What is the best way to do it in Workbench or Ansys? Thanks

May 21, 2011, 08:55		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,872 Rep Power: 144	Workbench is designed so data like this can be easily transferred between solvers. But either will be able to do it.

May 21, 2011, 13:32		#3
adam2008 New Member Join Date: Jul 2009 Posts: 25 Rep Power: 17	thanks. Can you give me some keywords so that I can search in workbench help? It looks like workbench needs a project start from CAD, then meshing, then solving. I don't know how I can import my data (mesh information and temperature) to setup a workbench project. Thanks again

May 22, 2011, 20:43		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,872 Rep Power: 144	Using workbench to join solvers is called coupling. A key aplication of it is fluid-structure interaction or FSI where an FEA solver is coupled to a CFD solver.

May 23, 2011, 00:40		#5
adam2008 New Member Join Date: Jul 2009 Posts: 25 Rep Power: 17	thanks again. but I guess I should clarify my problem. I have a CFX result which includes both fluid domain result and solid domain result, and I can export only the solid result part to Ansys Multifield file (say file is named as solid_temp.cdb file) in CFX solver. I found that this solid_temp.cdb basically has everything (mesh, temperature etc) to do a thermal stress analysis. I already figured out a way to conduct a stress analysis with this cdb file in Ansys by manipulating the file and writing an Ansys script, but I am interested to know, how to DIRECTLY use this file in Ansys-workbench to do a stress analysis? I tried to find a way in workbench, but it always looks to me that I have to build CAD, then mesh, then setup in workbench so that I can do a structural analysis. But in my situation, I don't want to build a CAD/mesh etc, I just want to utilize solid mesh/temperature results from CFX and use them directly in workbench to generate a stress result. Can I do that? Where should I look for related information in Help? thanks a lot