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Old   July 2, 2007, 10:45
Default yplus and y
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Hi to all.

Could u please give me an approximation to calculate y, for a given yplus, in a turbulent channel flow?

Thanks in advance Best regards Hadi
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Old   July 2, 2007, 18:08
Default Re: yplus and y
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An easy formula is


This is actually for a flat plate, but gives a fairly good start when building your extrusion surface for pipe flow.

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Old   July 3, 2007, 03:46
Default Re: yplus and y
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Thanks Tom, for the answer, but which velocity do i have to use?

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