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Knudsen number

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Revision as of 05:42, 21 September 2005 by Praveen (Talk | contribs)
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The Knudsen number is defined as

 Kn\equiv \frac{\lambda}{L}


  •  \lambda is the mean free path of the molecules
  •  L is the characteristic dimension

Knudsen number is a measure of the rarefaction of the flow.The various Flow regimes can be classifed based on Knudsen number.

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