why Cl change so steeply?! -- CFD Online Discussion Forums

April 16, 2006, 09:47	why Cl change so steeply?!	#1
JOE Guest Posts: n/a	hi there, i'm simulating a vortex induced vibration(the vibration due to cl in UDF) by using silding mesh, i found cl change so steeply that the case can only run 30 steps about even delta_time equals to 5e-5s. at last i set Re = 200, cl should have been small, but rapidly it increased to 4.9861e+05,Negative cell volume detected. the trouble again make me shocked. has anybody dealed with dynamic mesh ever? please do me a favor. thanx in advance.

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