cf design crash -- CFD Online Discussion Forums

May 5, 2009, 16:15	cf design crash	#1
eleazar Member Elena Cortin Join Date: Mar 2009 Location: Paris Posts: 65 Rep Power: 17	hello i am trying to run a transient analysis of a fan with rotating frame an 1000rpm, i have a 20 blades fan with a timestep 0.0003 and it has to run for 10 000 steps, but on step 1539 the velocity reach the number 1.8e+10 impossible !!!!!!! the timestep before is ok, so what happens and the timestep destroy my results?

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