Boundary conditions for a fan simulation -- CFD Online Discussion Forums

April 11, 2011, 10:22	Boundary conditions for a fan simulation	#1
billynoe Member William Join Date: Feb 2011 Location: Minnesota USA Posts: 33 Rep Power: 15	Hello all, I am trying to run a simulation with of a fan. Instead of using a dynamic mesh I wanted to do this using two boundaries to simulate a fan. I set the output side of the fan as a constant velocity and the inlet side as a zero pressure. outlet side zerogradient pressure and inlet side zerogradient velocity. This is probably why my sim keeps crashing. I would appreciate any ideas because I'm all out. I have tried several other BC's without success. The reason I don't want to do dymfoam is because I have almost zero cpu and I'm in 2D.

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