[ravindersingh]

Hi

I am simulating unsteady flow over 2d wind turbine. I want the turbine to start rotating due to flow field.

For this I am writing a UDF using the macro DEFINE_CG_MOTION which will rotate the domain containing the blade.

I am following the example given in the UDF manual. But in my UDF I want to calculate the rotational velocity from the moment.

From the forums I came to know about the command "Compute_Force_and_Moment", however I have no idea how to use it and also didn't find much information from internet. Also I get Cm curve from the menu Solve->Monitor->Forces. How can I use it within the UDF?

Please help. Also advide if there is an alternate method available.