Learning Forum

[javat33489]

Hi all.

Can you please tell me the expression for determining the angle of rotation?

Under the influence of the flow of water, I should rotate the part (I use a dynamic mesh and 6 dof), but I can not determine visually. I need display in report definition or expression.

[Federico Alzamora Previtali]

Hello, 

I can think of some crude ways to do this. For example, if you take the maximum velocity on your rotating part (this will be the tangential velocity), multiplied the flow time and divided by the radius of the part -> this will give you an angle in radians.

Maximum(Velocity.mag,['name of part boundary'])*flow_time/radius [m]

Replace 'name of part boundary' by the actual name for this face zone, and radius by the actual value.

You can compare the value you get from the value shown in the Dynamic Mesh zone setting for the rotating body, where you'll have both the angular velocity and angular orientation.

 

[javat33489]

Thanks a lot! I will try it!