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Slip condition in pipe flow

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Old   March 4, 2015, 05:47
Default Slip condition in pipe flow
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Cheeky monkey
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Hi, I am new to Ansys. I want to apply slip flow condition to my pipe. Have any ideas how to do it?

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Old   March 6, 2015, 00:02
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In wall boundary conditions, instead of specifying no slip condition you can do a specified shear condition (where you provide the shear with units of Pa). If you want to do more complicated stuff, it might require a UDF.
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Old   March 6, 2015, 14:56
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how do you calculate the shear stress? Are there any specific equations?

Thanks for replying btw!
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Old   March 6, 2015, 15:48
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You can get it from Newton's Law if you know the velocity.
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Old   March 6, 2015, 16:31
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Or leave at 0 if you are looking to have a full slip condition
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