How to define angular acceleration -- CFD Online Discussion Forums

April 20, 2010, 14:21	How to define angular acceleration	#1
Randre New Member Join Date: Mar 2010 Posts: 19 Rep Power: 16	Hi I need to write and UDF with the following motion equation of a hinged valve: M = I $\ddot{\theta}$ How do I define the angular acceleration? Is there a macro to do it? Thanks

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