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-   -   Errorneous velocity near walls while using wedge type BC for axisymmetric flow (http://www.cfd-online.com/Forums/openfoam-solving/112982-errorneous-velocity-near-walls-while-using-wedge-type-bc-axisymmetric-flow.html)

diwakaranant February 9, 2013 01:41

Errorneous velocity near walls while using wedge type BC for axisymmetric flow
 
2 Attachment(s)
Hi

I am solving axisymmetric flow problem of flow between two rotating cylinders using rhoCentralFoam using wedge type BC. I generated the mesh in GMSH and converted it into openFoam using gmshToFoam utility.
But when I am running the simulation, I am getting non-zero radial velocity near the outer rotating cylinder, which ideally should be zero.

The Uy and the velocity vector plots near the outer rotating wall
are attached.

The rotation is about X axis. Hence Uy is the radial velocity component.

Can some one tell why is this happening ?

Thanks
Anant


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