A Large Eddy Simulation based on the diffusion- velocity method and the discrete vortex method is presented.The vorticity-based and eddy-viscosity type subgrid scale model simulating the enstrophy transfer between the large and small scale appears as a convective term in the diffusion-velocity formulation.The methodology has been tested on a spatially growing mixing layer using the two- dimensional vortex-in-cell method and th e Smagorinsky subgrid scale model.The effects on the vorticity contours,mean streamwise velocity profiles, root-mean-square velocity and vorticity fluctuations and negative cross-stream correlation are discussed.
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