Defining a universal and continuous Strouhal–Reynolds number relationship for the laminar vortex shedding of a circular cylinder

AIP Publishing - Tập 31 Số 10 - Trang 2742-2744 - 1988
C. H. K. Williamson1
1Graduate Aeronautical Laboratories, California Institute of Technology, Pasadena, California 91125

Tóm tắt

The existence of a discontinuity in the Strouhal–Reynolds number relationship for the laminar vortex shedding of a cylinder is found to be caused by a change in the mode of oblique shedding. By ‘‘inducing’’ parallel shedding (from manipulating end conditions) the resulting Strouhal curve becomes completely continuous and agrees very well with the oblique-shedding data, if it is transformed by S0=Sθ/cos θ (where Sθ is the Strouhal number corresponding with the oblique-shedding angle θ). The curve also agrees with data from a completely different facility. This provides evidence that this Strouhal curve (S0) is universal (for a circular cylinder).

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Tài liệu tham khảo

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AIP Publishing

Tập 31 Số 10

2742-2744

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