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1986

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/9403

Diffusive transport in spatially periodic hydrodynamic flows

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Abstract

We calculate the effective diffusion coefficient in convective flows which are well described by one spatial mode. We use an expansion in the distance from onset and homogenization methods to obtain an explicit expression for the transport coefficient. We find that spatially periodic fluid flow enhances the molecular diffusion D by a term proportional to D-1. This enhancement should be easy to observe in experiments, since D is a small number.

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http://dx.doi.org/10.1103/PhysRevA.34.4136

Subject

Teoria del transport, Fluctuacions (Física), Mecànica de fluids

Subject (English)

Transport processes, Fluctuation phenomena, Fluid mechanics

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Articles publicats en revistes (Ciència dels Materials i Química Física)

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SAGUÉS I MESTRE, Francesc and HORSTHEMKE, W. Diffusive transport in spatially periodic hydrodynamic flows. Physical Review A. 1986. Vol. 34, num. 5, pags. 4136-4143. ISSN 1050-2947. [consulted: 8 of October of 2026]. Available at: https://hdl.handle.net/2445/9403

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