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Strouhal Number
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Strouhal Number

Strouhal number is proportional to the reciprocal of vortex spacing expressed as no. of obstacle diameters and is used in momentum transfer in general and Van Karman vortex streets and unsteady state flow calculations in particular. It is normally defined in the following form :

 

Strouhal Number

 

Where:

fr

=

frequency

L

=

Characteristic length

V

=

Velocity

 

 

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