boundary condition of lid driven cavity

KWJ · January 21, 2011, 20:57

On the top of the cavity, dirichlet boundary condition is usually used. (u=U,v=0) If neumann condtion for v is used instead of dirichlet condition(v=0), is it correct??

mavenuparker · January 22, 2011, 01:57

Hi

I don't think you can specify the Naumann boundary condition, which says that the derivative of v component is zero indicating that the velocity in the first cell in the interior is equal to the velocity at the boundary, so u may no be enforcing the v=0 at the moving lid. Hence you can only use the Dirchlet boundary condition only.

January 21, 2011, 20:57	boundary condition of lid driven cavity	#1
KWJ New Member Kim Woo-jin Join Date: Jan 2011 Posts: 1 Rep Power: 0	On the top of the cavity, dirichlet boundary condition is usually used. (u=U,v=0) If neumann condtion for v is used instead of dirichlet condition(v=0), is it correct??

January 22, 2011, 01:57	HI	#2
mavenuparker New Member Maven U Parker Join Date: Jan 2011 Location: In your Heart Posts: 4 Rep Power: 15	Hi I don't think you can specify the Naumann boundary condition, which says that the derivative of v component is zero indicating that the velocity in the first cell in the interior is equal to the velocity at the boundary, so u may no be enforcing the v=0 at the moving lid. Hence you can only use the Dirchlet boundary condition only.

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