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symmetry and wall (free slip) BC

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Old   October 11, 2012, 03:10
Default symmetry and wall (free slip) BC
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Hamed Abdul Majeed
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Hi,
What is the difference between symmetry and free slip wall boundary conditions in ANSYS CFX.
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Old   October 11, 2012, 05:56
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Glenn Horrocks
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This is described in the documentation.

Symmetry enforces zero normal gradient to all parameters, and a slip wall does not necessarily do this. But for most normal simulations they are equivalent.

And a symmetry plane is required to be planar, but a slip wall can be any shape.
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