free decay of anti-roll tank -- CFD Online Discussion Forums

February 5, 2016, 04:47	free decay of anti-roll tank	#1
jally New Member jianlin Join Date: Feb 2016 Posts: 1 Rep Power: 0	hi all, I have a question , when i was simulating an anti-roll tank with damping structure inside with Star-ccm+,the result period of the rectangular tank is not the same as the exp result or the result from empirical formula(T=2B/(gh)^0.5, that is, the CFD result is 20% bigger than the exp period. I try many ways including adjust time-step,cell size,or turbulence model, but the CFD result period is not improved at all. Can any one give me a reason why this might be happening?

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