[PouyanJ]

Hi everybody. I need your help.

Here, I have a channel (2D) with a inclined rectangle in the middle and I'd like to simulate the rotation of this object by action of the fluid flow. I've been using a 6DOF udf together with dynamic mesh, but when I run the solver, the rectangular object wont rotate. I decreased the values of Moment of Inertia to even very low numbers, but it didn't rotate again. Would it be possible to help me what to do?

I used the following UDF file (however I Changed the values of mass and moment of inertia):

DEFINE_SDOF_PROPERTIES(body, prop, dt, time, dtime)
{
prop[SDOF_MASS] = 666.66;
prop[SDOF_IXX] = 129.6296;
prop[SDOF_IYY] = 111.1111;
prop[SDOF_IZZ] = 129.6296;

printf ("\n2d_test_box: Updated 6DOF properties");
}