Lid driven cavity flow

June 4, 2002, 14:23

For the classic lid driven cavity flow - laminar flow - I first modeled the lid as a moving wall boundary, which gave quite good results & convergence rate.

Now I am trying to vary the lid speed, which is not possible in FLUENT, so I changed the lid to a velocity boundary specifying the 3 velocity components and found it takes a really long time to converge, and the results are different.

Can somebody explain why there is such big difference for the flow inside cavity (Re=100), the above two ways of modeling should give the same results??

emraisel · December 16, 2009, 19:10

Could you tell me the results after your studying? I mean if you compare the results after you improve the speed of lids what is happening?

Because I will start to do the experimental work of it..

selcukatalay@hotmail.com

Thanks..

June 4, 2002, 14:23	Lid driven cavity flow	#1
KK Guest Posts: n/a	For the classic lid driven cavity flow - laminar flow - I first modeled the lid as a moving wall boundary, which gave quite good results & convergence rate. Now I am trying to vary the lid speed, which is not possible in FLUENT, so I changed the lid to a velocity boundary specifying the 3 velocity components and found it takes a really long time to converge, and the results are different. Can somebody explain why there is such big difference for the flow inside cavity (Re=100), the above two ways of modeling should give the same results??

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December 16, 2009, 19:10		#2
emraisel New Member Kimi Raikkonen Join Date: Dec 2009 Posts: 1 Rep Power: 0	Could you tell me the results after your studying? I mean if you compare the results after you improve the speed of lids what is happening? Because I will start to do the experimental work of it.. selcukatalay@hotmail.com Thanks..