Global Courant too high -- CFD Online Discussion Forums

September 13, 2011, 09:29	Global Courant too high	#1
pstreufert New Member PS Join Date: Aug 2011 Posts: 13 Rep Power: 14	Hi - I'm using a transient sliding mesh model to simulate a horizontal rotating impeller with the VOF model to simulate a partially filled horitzontal mixing tank. I can get my rotation to work right, but after a few degrees of rotation I get an error that the "Global Courant is over 250" and to adjust my time-step. I adjusted the time step by a factor of 10 and it still gives me the error. Any suggestions how to set my model so that it continues to run?

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