Abstract
Through the use of the Novikov-Furutsu formula for Gaussian processes an equation is obtained for the diffusion of the ensemble average of a passive scalar in an incompressible turbulent velocity field in terms of the two-point, two-time correlator of this field. The equation is valid for turbulence which is not necessarily homogeneous or stationary and thus generalizes previous work.
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Lipscombe, T.C., Frenkel, A.L. & ter Haar, D. On the convection of a passive scalar by a turbulent Gaussian velocity field. J Stat Phys 63, 305–313 (1991). https://doi.org/10.1007/BF01026606
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DOI: https://doi.org/10.1007/BF01026606