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Effective diffusion in a stochastic velocity field |
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| Authors: | A. Careta F. Sagués L. Ramirez-Piscina J. M. Sancho |
| Affiliation: | (1) Departament de Química Física, Universitat de Barcelona, 08028 Barcelona, Spain;(2) Departament de Física Aplicada, Universitat Politècnica de Catalunya, 08028 Barcelona, Spain;(3) Departament d'Estructura i Constituents de la Matèria, Universitat de Barcelona, 08028 Barcelona, Spain |
| Abstract: | Analytical results are derived for the effective dispersion of a passive scalar in a stochastic velocity field evolving in a fast time scale. These results are favorably compared with direct computer simulation of stochastic differential equations containing multiplicative space-time correlated noise. |
| Keywords: | Effective diffusion stochastic velocity multiplicative correlated noise |
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