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-   -   2-way ANSYS-CFX FSI reaction force calculation on solid (http://www.cfd-online.com/Forums/cfx/123707-2-way-ansys-cfx-fsi-reaction-force-calculation-solid.html)

esbolico September 19, 2013 05:57

2-way ANSYS-CFX FSI reaction force calculation on solid
 
Hi Everyone,

I am doing an FSI simulation with ansys and CFX where I apply a displacement over a certain area of a pipe-like structure (where there is no fluid) and I want to see the behavior of the fluid and calculate the required force. Find attached a view of how my worbench looks like.
http://imageshack.us/photo/my-images/41/wj4l.png/
http://imageshack.us/photo/my-images/41/wj4l.png/

The question is how can I calculate the force that I have to exert on the solid part. I have read that you can calculate the force on the fluid surfaces using for instance force_x()@NameOfSurface but doing so with the name of the surface where the displacement boundary condition is applied returns 0 when it can't be that.

Thank you very much!


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