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Diffusion on two length scales

 

作者: Ronald H. Cohen,   William McCay Nevins,   George Rowlands,  

 

期刊: Physics of Fluids(00319171)  （AIP Available online 1981）
卷期: Volume 24, issue 8  

页码: 1584-1585

 

ISSN:0031-9171

 

年代: 1981

 

DOI:10.1063/1.863575

 

出版商: AIP

 

数据来源: AIP

 

摘要:

One‐dimensional diffusion is considered for a system in which the diffusion coefficientDhas a rapid oscillation in the spatial variable as well as a slow variation. For long times, the distribution function evolves diffusively with an effective diffusion coefficient given by averaging 1/D.

 

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