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Vorticity Shedding From a Lentil at Large Incidence in Uniform Flow

  • G. Riccardi
  • R. Piva
Conference paper
Part of the International Union of Theoretical and Applied Mechanics book series (IUTAM)

Abstract

We study the 2D flow about a lentil shaped body at high incidence in uniform stream at large Reynolds numbers. The separation points are fixed on the body edges and the vorticity released through a Kutta-like condition is spatially discretized by point vortices. Their Lagrangian inviscid dynamics is described by using both a conformal mapping and a boundary elements method.

The effects of different Kutta conditions and of several choice of the generation times are investigated. Different amalgamation procedures in the far wake are used to show that global quantities (Strouhal number,shed circulation) are rather sensible to these treatment of the vortex street.

Keywords

Boundary Element Method Flat Plate Conformal Mapping Strouhal Number Point Vortex 
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References

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    Chua, K.; Lisoski, D.; Leonard, A.; Roshko, A. A numerical and experimental investigation of separated flow past an oscillating flat plate, Proceedings of the International Symposium on Nonsteady Fluid Dynamics, 92 (1990) 455–464Google Scholar
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    Fage, A.; Johansen, F.C. On the flow of air behind an inclined flat plate of infinite span, Proc Roy. Soc., A 116 (1927)Google Scholar
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    Kiya, M.; Arie, M. A contribution to an inviscid vortex-shedding model for an inclined flat plate in uniform flow, J. Fluid Mech., 82 part 2 (1977) 223–240ADSCrossRefMATHGoogle Scholar
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    Riccardi, G.; Iafrati, A.; Piva, R. Vorticity dynamics in the wake of a lentil at large incidence, submitted to Meccanica (1992)Google Scholar
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    Sarpkaya, T. An inviscid model of two-dimensional vortex shedding for transient and asymptotically steady separated flow over an inclined flat plate, J. Fluid Mech., 68 part 1 (1975) 109–128ADSCrossRefMATHGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • G. Riccardi
    • 1
  • R. Piva
    • 1
  1. 1.Dip. di Meccanica e AeronauticaUniversitá di Roma “La Sapienza”RomaItaly

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