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-   -   Changing moment of inertia (http://www.cfd-online.com/Forums/star-ccm/122239-changing-moment-inertia.html)

frownless August 15, 2013 03:03

Changing moment of inertia
 
Hi guys,
I would like to simulate a free motion DFBI body with a changing moment of inertia. Is this possible? The moments of inertia are defined in the initial body coordinate system. If I am changing them do I need to apply a transformation involved with the body rotating? Does anyone have any smart ways to solve this issue?
Cheers!

lava12005 August 15, 2013 21:12

Not sure, but I think you can just stay continuing with the axis since it is following the body and then change the value of the Ixx etc by some kind of field function?


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