Vortex Methods with Spatially Varying Cores

  title={Vortex Methods with Spatially Varying Cores},
  author={Georges-Henri Cottet and Petros Koumoutsakos and Mohamed Lemine Ould Salihi},
The accuracy of vortex methods employing smooth vortex particles/blobs is determined by the blob size, which can be viewed as a mollifier of the vorticity field. For computational efficiency, this core size needs to be spatially variable as particles are used to discretize different parts of the flow field, such as the boundary layer and the wake in bluff body flows. We derive here a consistent approximation for the viscous Navier–Stokes equations using variable size vortex particles. This… CONTINUE READING


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