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Fluid mechanics question--slip boundary condition for gas?

  1. Jan 3, 2015 #1
    In solving the Navier Stokes equation, the typical boundary condition imposed on the tangential velocity at a solid surface is that of no-slip. However, it is known that for gaseous flow there always exists a non-zero velocity near the wall, especially at relatively big Knudsen number.
    Is there any good book/paper that I can get such information? In particular, I am interested in the slip velocity of nitrogen gas at Kn=0.07~0.1.
  2. jcsd
  3. Jan 3, 2015 #2
    Google: Knudsen Number non-slip
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