Rayleigh-Benard percolation transition study of thermal convection in porous media: Numerical simulation and NMR experiments

被引：17

作者：

Weber, M ^{[1
]}

Klemm, A ^{[1
]}

Kimmich, R ^{[1
]}

机构：

[1] Univ Ulm, Sekt Kernresonanzspektroskopie, D-89069 Ulm, Germany

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.86.4302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Thermal convection was, studied as a function of the porosity in random-site percolation model objects in a Rayleigh-Benard configuration. NMR velocity mapping experiments and numerical simulations using the finite-volume method are compared. Velocity histograms were evaluated and can be described by power laws in a wide range. The maximum velocity as a function of the porosity indicates a combined percolation/Rayleigh-Benard transition.

引用

页码：4302 / 4305

页数：4

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