Strouhal number of prism as a function of the number of edges and Strouhal number of a cone
Abstract
A prismatic bar in a wind tunnel was used to study the Strouhal number as a function of the number of prism edges and the position in the flow, for a range of Reynolds numbers. The Strouhal number of a cone was studied as a function of the cone angle. It is shown that the Strouhal number is almost independent of the Reynolds number but is sensitive to the number of prism edges and the position in the flow. This sensitivity is quite pronounced for prisms with up to nine edges, but is insignificant for prisms with 10 or more edges. For prisms of the latter type, the Strouhal number of a circular cylinder may be safely used in practice as a first approximation. This applies also to a cone.
 Publication:

Acta Technica
 Pub Date:
 1975
 Bibcode:
 1975AcTec..20..556N
 Keywords:

 Cones;
 Prismatic Bars;
 Strouhal Number;
 Viscous Fluids;
 Vortex Streets;
 Edges;
 Flow Velocity;
 Inlet Flow;
 Near Wakes;
 Wedge Flow;
 Wind Tunnel Tests;
 Fluid Mechanics and Heat Transfer