Vorticity Shedding From a Lentil at Large Incidence in Uniform Flow
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.
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