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-   -   2-way FSI (steady) (http://www.cfd-online.com/Forums/cfx/93272-2-way-fsi-steady.html)

lingdeer October 10, 2011 15:44

2-way FSI (steady)
 
Hi, I m running 2-way FSI with steady conditions, which will eventually used as initial condition for transient FSI.
Is it ok if I used transient structual instead of static structual to couple with CFX in ansys workbench?

Thanks!

mvoss October 11, 2011 07:44

AFAIK 2-way coupling needs a transient struct. approach. What do you mean by "steady conditions" (inflow, pressure e.g.)?

neewbie

lingdeer October 11, 2011 11:53

I am using ANSYS CFX with ANSYS workbench to setup the solid part.
I am running with steady flow boundary conditions.
Thanks!

stumpy October 11, 2011 15:08

Using transient structural is OK for this. It's actually better to use transient structural for the steady part if you intend to later switch it to a true transient, since it makes the switch easier. You can turn off time integration in the transient structural analysis if you want to get steady behavior, then turn it back on when starting the real transient. When you start the real transient note that it won't be starting from time = 0, since some "time" will have been completed in the "steady" part.


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