Turbulent heat transport regimes in a channel

被引：5
|
作者：
Castaing, B. [1 ]
Rusaouen, E. [2 ]
Salort, J. [2 ]
Chilla, F. [2 ]
机构：
[1] Univ Grenoble Alpes, CNRS, Grenoble INP, LEGI, F-38000 Grenoble, France
[2] Univ Claude Bernard, Univ Lyon, Ens Lyon, CNRS,Lab Phys, F-69342 Lyon, France
来源：
PHYSICAL REVIEW FLUIDS | 2017年 / 2卷 / 06期
关键词：
CONVECTION; FLOW;
D O I：
10.1103/PhysRevFluids.2.062801
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：
In this paper we focus on the turbulent transport of a scalar through a channel. The scalar flux and the corresponding scalar concentration gradient along the channel allow us to define a Nusselt number and a Grashof number. While the relation between the large-scale velocity field and the input energy rate show perfect inertial (turbulent) behavior, three different regimes can be distinguished, with different scalings between Nusselt and Grashof numbers.
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页数：10
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