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mtl40 January 21, 2010 21:21
Wall Shear Stress
 
I am performing a multiphase simulation in a cyclone separator. The wall boundary conditions are set to no slip for air, and free slip for the dispersed phase. The free slip condition sets the normal velocity to the wall for the dispersed phase to zero. The wall shear stress is set to zero as well. However, in post processing, there are still wall shear values for the dispersed phase.

Can someone explain to me why this is occured?

Lysistrata January 22, 2010 22:45
Quote:
Originally Posted by mtl40 (Post 243381)
I am performing a multiphase simulation in a cyclone separator. The wall boundary conditions are set to no slip for air, and free slip for the dispersed phase. The free slip condition sets the normal velocity to the wall for the dispersed phase to zero. The wall shear stress is set to zero as well. However, in post processing, there are still wall shear values for the dispersed phase.

Can someone explain to me why this is occured?
If you aren't smart enough to tell us what code you used and what post-processor, then it is probably due to your own incompetence.

mtl40 January 23, 2010 00:19
This is with ANSYS CFX.

Lysistrata January 23, 2010 02:08
Quote:
Originally Posted by mtl40 (Post 243496)
This is with ANSYS CFX.
Why did you decide to post your question on the general forum, instead of on a completely random one like, for example, the ANSYS CFX forum?


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