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Physical meaning of Y+?

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Old   May 19, 2005, 06:49
Default Physical meaning of Y+?
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Wodo
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Hi all, I try to figure out what's the physical meaning of Y+ from many explanation. But I still cannot get it! Can somebody explain for me, thanks!
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Old   May 19, 2005, 18:35
Default Re: Physical meaning of Y+?
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agg
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Y+ is a non--dimensional parameter, based on which different regions near a wall boundary are divided. For example, a location of y+ = 5 will lie in the viscous region independent of the flow parameters (fluid, velocity, length of domain, etc.)
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Old   May 19, 2005, 20:53
Default Re: Physical meaning of Y+?
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Wodo
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Hi agg, thanks, Do you mean the Y+ is only an index to determine whether it is located inside the boundary layer or not? Then what's the Y+ range for boundary layer? thanks.
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Old   May 19, 2005, 22:45
Default Re: Physical meaning of Y+?
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agg
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To learn more about ranges, refer, "Computational mechanics and Heat tranfer" by Anderson, Tannehill and Pletcher.
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Old   May 20, 2005, 01:27
Default Re: Physical meaning of Y+?
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Wodo
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Thanks agg for your response.
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