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arXiv · physics/9808042

Stochastic Stokes' drift

Kalvis M. Jansons·G. D. Lythe
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Abstract

Classical Stokes' drift is the small time-averaged drift velocity of suspended non-diffusing particles in a fluid due to the presence of a wave. We consider the effect of adding diffusion to the motion of the particles, and show in particular that a non-zero time-averaged drift velocity exists in general even when the classical Stokes' drift is zero. Our results are obtained from a general procedure for calculating ensemble-averaged Lagrangian mean velocities for motion that is close to Brownian, and are verified by numerical simulations in the case of sinusoidal forcing.

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BibTeXRIS

Kalvis M. Jansons, G. D. Lythe. 1998-08-28. Stochastic Stokes' drift. https://doi.org/10.1103/physrevlett.81.3136

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