DEFINE_DPM_BODY_FORCE problem with the direction -- CFD Online Discussion Forums

March 15, 2017, 12:05	DEFINE_DPM_BODY_FORCE problem with the direction	#1
TimTUBAF New Member Join Date: Dec 2016 Posts: 11 Rep Power: 9	Hi everybody, You may saw my previous posts about my current UDF. I'm working on an UDF to compute the magnetic force on a magnetit-particle. In order to do that, I'm using the DPM_BODY_FOCE macro for the UDF-Manual. My question is: how can't I get the direction in which the force is applied? Do I have to make an if-statement like in the example UDF with: Code: if(i==0) ... else if(i==1) ... else(i==2) ... And what should I return to Fluent? An acceleration ? Please help me !! Thanks Tim

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