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Slip walls or Zero shear stress

  1. Jun 17, 2010 #1

    jpo

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    Hello


    I am trying to understand if is it reasonable to use "slip walls" or "zero shear stress" to model smooth walls.
    I am working with turbulent air flows in ducts.

    Please share your comments.
     
  2. jcsd
  3. Jun 18, 2010 #2

    jpo

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    Are there materials that would qualify as "slip walls"?

    For example, the pipe roughness of glass/drawn brass/copper pipe is 0.0015 mm. Is it wise to enforce "zero shear stress" on such wall?
     
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