2-way ANSYS-CFX FSI reaction force calculation on solid

esbolico · September 19, 2013, 04:57

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/

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!

masih · September 20, 2017, 16:16

hi
can you find the answer? because i have this question too?

urosgrivc · September 21, 2017, 00:57

Are you sure your NameOfSurface is on the fluid side?

If I understand you just vant the force on the pipe than just use your fluid wall location as force on area is obtained from flow properties like Pressure and visqus forces like shear.

September 19, 2013, 04:57	2-way ANSYS-CFX FSI reaction force calculation on solid	#1
esbolico New Member esbolico Join Date: Sep 2013 Posts: 2 Rep Power: 0	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/ 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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September 20, 2017, 16:16		#2
masih New Member nina Join Date: Aug 2017 Posts: 1 Rep Power: 0	hi can you find the answer? because i have this question too?

September 21, 2017, 00:57		#3
urosgrivc Senior Member urosgrivc Join Date: Dec 2015 Location: Slovenija Posts: 365 Rep Power: 10	Are you sure your NameOfSurface is on the fluid side? If I understand you just vant the force on the pipe than just use your fluid wall location as force on area is obtained from flow properties like Pressure and visqus forces like shear.