Effect of a vertical magnetic field on turbulent Rayleigh-Benard convection

被引：58
|
作者：
Cioni, S [1 ]
Chaumat, S [1 ]
Sommeria, J [1 ]
机构：
[1] Ecole Normale Super Lyon, Phys Lab, CNRS, URA1325, F-69364 Lyon 07, France
来源：
PHYSICAL REVIEW E | 2000年 / 62卷 / 04期
关键词：
D O I：
10.1103/PhysRevE.62.R4520
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The effect of a vertical uniform magnetic; field on Rayleigh-Benard convection is investigated experimentally. We confirm that the threshold of convection is in agreement with linear stability theory up to a Chandrasekhar number Q similar or equal to 4x10(6), higher than in previous experiments. We characterize two convective regimes influenced by MI-ID effects. In the first one, the Nusselt number Nu proportional to the Rayleigh number Ra, which can be interpreted as a condition of marginal stability for the thermal boundary layer. For higher Ra, a second regime Nu similar to Ra-0.43 is obtained.
引用
收藏
页码：R4520 / R4523
页数：4
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