Convection-enhanced diffusion for random flows
نویسندگان
چکیده
منابع مشابه
Convection-Enhanced Diffusion for Random Flows
We analyze the effective diffusivity of a passive scalar in a two-dimensional, steady, incompressible random flow that has mean zero and a stationary stream function. We show that in the limit of small diffusivity or large Peclet number, with convection dominating, there is substantial enhancement of the effective diffusivity. Our analysis is based on some new variational principles for convect...
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We analyze the e ective di usivity of a passive scalar in a two dimensional, steady, incompressible random ow that has mean zero and a stationary stream function. We show that in the limit of small di usivity or large Peclet number, with convection dominating, there is substantial enhancement of the e ective di usivity. Our analysis is based on some new variational principles for convection di ...
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ژورنال
عنوان ژورنال: Journal of Statistical Physics
سال: 1997
ISSN: 0022-4715,1572-9613
DOI: 10.1007/bf02732425