CFD Online Discussion Forums

CFD Online Discussion Forums (
-   STAR-CCM+ (
-   -   Changing moment of inertia (

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?

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?

All times are GMT -4. The time now is 10:55.