Expressions and FSI Question

chris b.

Greetings,

I am running FSI Sims with two way coupling between ANSYS 10 and CFX 10. My difficulties lie in establishing a good mesh stiffness. I read in tutorial 20 that a good mesh stiffness would be 1 / the volume of the control volume. However, I do not what commands I need to enter in the CEL epression language to get "the volume of the control volume." I have looked in the help files of CFX and still have not been able to find the information I need. If someone already knows or can point me in the correct direction, I would greatly appreciate their assistance.