Abstract
The present paper deals with a theoretical research on the problem of staggered vortex streets formed behind a cylinder in a stream. Assuming that the boundary layer vorticity is perfectly conserved as the shear flow in the wake and the concentrated point vortices, and recorgnizing the justice of Karman's stability criterion, the Strouhal number can be computed as a function of the base pressure coefficient. The calculated results are in very good agreement with the experimental ones for the full Reynolds number range. It is also possible to find the intensity of the circulation of the point vortices of vortex streets over a wide range of Reynolds numbers.
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