PROCESS ASSOCIATES
Knudsen Number
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Knudsen Number

Knudsen number is proportional to { (length of mean free path) / (characteristic dimension) } and is used in momentum and mass transfer in general and very low pressure gas flow calculations in particular. It is normally defined in the following form :

 

Knudsen Number

 

Where:

lambda

=

Length of mean free path

L

=

Characteristic dimension

 

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