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second cell center velocity away from the wall

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Old   July 22, 2019, 21:34
Smile second cell center velocity away from the wall
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YangNiannian
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Hi, everyone
I have little experience in programing.
In wall function code,
Up=turbModel.U().boundaryField()[patchi].patchInternalField()
is the first cell center velocity adjacent to the wall, but I also need the second cell center velocity.
How should I write this?
Thanks.
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