We khow that zero-pressure (0 Pa) is a very common inlet/outlet boundary condition in CFD simulation. However, can the zero-pressure (0 Pa) be used as inlet or outlet boundary conditions in the simulation of a FSI problem?
Dear Seifollah,
I can try to answer your question.
In for instance ADINA-FSI you can use a pressure boundary condition on the CFD part. Use the normal traction boundary condition.
*
TIMEFUNCTION NAME=1
CLEAR
0 0
100 0
*
LOAD NORMAL-TRACTION NAME=1 MAGNITUD=1.0
*
APPLY-LOAD BODY=1
1 'NORMAL-TRACTION' 1 'FACE' 1 0 1
*
See chapter 3.4.2 Usual boundary conditions for fluid in the Theory and Modeling Guide Volume III: CFD & FSI.
I hope I understood your question and that you find it helpful.
Best regards, Kenth
Yes, it can be used.
I have seen in some articles that zero pressure has been used as an outlet boundary condition in FSI problems solving by Comsol.
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