Relative spatial diffusion in turbulent media

Kazuhiko Seki, Kazuo Kitahara and Grégoire Nicolis

Physica A: Statistical Mechanics and its Applications, 1994, vol. 209, issue 3, 369-384

Abstract: Starting from the Langevin equation a nonlinear evolution equation describing the mean square distance of initially close tagged particles in a turbulent medium is obtained. The equation is the same as that derived for a turbulent plasma by Misguich and Balescu using renormalized kinetic theory. The approach is extended to incorporate stable drift in connection with the diffusion of macro particles in a turbulent fluid. The initial ≈t3 and intermediate exponential growth of the mean square distance subsist even under the presence of stable drift in agreement with many confirmed observations.

Date: 1994
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:209:y:1994:i:3:p:369-384

DOI: 10.1016/0378-4371(94)90190-2

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