Abstract
We study scalar diffusion, both from Eulerian and Lagrangian perspectives, advected by two dimensional flows. Emphasis is devoted to the problem of scalar diffusion under a synthetic turbulent flow. We present numerical and analytical results for the turbulent diffusion coefficient either from the influence of the turbulent synthetic field and a periodic array of eddies. Preliminary results concerning Lagrangian dispersion are also reported.
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Martí, A., Sagués, F. & Sancho, J. Numerical Experiments in Scalar Diffusion under Stochastic Convection. Flow, Turbulence and Combustion 59, 127–139 (1997). https://doi.org/10.1023/A:1001123103064
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DOI: https://doi.org/10.1023/A:1001123103064