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law of the wall

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Old   January 31, 2010, 21:15
Default law of the wall
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Mohammed Al Ansari
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I'm just wondering why is the y+ value is important? and what does it mean exactly? is it the dimensional distance from the cell to the wall?
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Old   February 1, 2010, 09:46
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You need to read an introduction in turbulent boundary layer, check Anderson - Fundamentals of Aerodynamics or Cebeci - Modeling of Boundary Layer Flow.

An no, y+ is not a "dimensional" distance, it is actually a non-dimensional quantity.

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Old   February 2, 2010, 10:32
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Jouke de Baar
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alternatively http://www.fluent.com/software/unive.../turbulent.pdf
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