Diffusion of passive scalars under stochastic convection
Open Access
- 1 January 1994
- journal article
- research article
- Published by AIP Publishing in Physics of Fluids
- Vol. 6 (1) , 349-355
- https://doi.org/10.1063/1.868089
Abstract
The diffusion of passive scalars convected by turbulent flows is addressed here. A practical procedure to obtain stochastic velocity fields with well-defined energy spectrum functions is also presented. Analytical results are derived, based on the use of stochastic differential equations, where the basic hypothesis involved refers to a rapidly decaying turbulence. These predictions are favorable compared with direct computer simulations of stochastic differential equations containing multiplicative space-time correlated noise.Keywords
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