Direct Numerical Simulation of Non-Oberbeck-Boussinesq Effects in Turbulent Rayleigh-Benard Convection of Water

被引：0
|
作者：
Horn, Susanne [1 ]
Shishkina, Olga [1 ]
Wagner, Claus [1 ]
机构：
[1] DLR Inst Aerodynam & Flow Technol, Gottingen, Germany
来源：
NEW RESULTS IN NUMERICAL AND EXPERIMENTAL FLUID MECHANICS VIII | 2013年 / 121卷
关键词：
D O I：
10.1007/978-3-642-35680-3_71
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
Turbulent Rayleigh-Benard convection of water is studied by means of three-dimensional Direct Numerical Simulations. The generated flow fields are analysed with respect to deviations from the Oberbeck-Boussinesq case. For this purpose simulations in a cylindrical domain with various temperature differences between the plates are performed. We obtain an asymmetry in the boundary layers and the plume dynamics, an enhancement of the bulk temperature and a decrease of the Nusselt number with increasing temperature difference.
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页码：599 / 606
页数：8
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