torque calculation
Hi to everybody,
I need to calculate the torque on the object I'm studying. I usually use this expression: torque_z()@object (1) in order to calculate the z component of the torque. In this case the software will automatically calculate this torque considering the origin global axis point as reference point. In my case I need to calculate this torque considering not the origin of the global axis but the "moving" origin of a new local axis system. Do someone know how I can modify the expression (1) in order to solve my problem? Thanks in advance Ciro 
A bit of basic mechanics can do it. Draw some vector diagrams and work it out.

Hi ghorrocks,
thank you for your reply but I think I was not able to explain my problem well. I needed to write an expression in CFX pre in order to calculate the torque respect a a moving centroid of the planing hull I'm studying. In the meanwhile I think I've solved my problem...now I have only to test it! Thank you again! 
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