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-   -   Global Courant too high (http://www.cfd-online.com/Forums/fluent/92398-global-courant-too-high.html)

pstreufert September 13, 2011 09:29

Global Courant too high
 
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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