Numerical investigation of spectrums of turbulent convection

被引：0
作者：
Palymskiy, Igor B. [1 ]
机构：
[1] Modern Acad Humanities, Dept Math & Informat, NB, Novosibirsk 630064, Russia
来源：
TURBULENCE, HEAT AND MASS TRANSFER 6 | 2009年
关键词：
TEMPERATURE-FLUCTUATIONS; SIMULATION; NUMBER;
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Three-dimensional turbulent convectional flows of viscous and incompressible fluid in a horizontal layer numerically is simulated at heating from below. The boundaries of a layer are stress-free. For temperature pulsations the Kolmogorov k(-5/3) and k(-2.4) spectrums have been found. Also we observed for velocity pulsations the Obukhov-Bolgiano k(-11/5), k(-3) and k(-5) spectrums. The last spectrum had been suggested in theoretical works for liquid with large Prandtl number and spectrum k(-3) has been derived in numerical simulations of turbulent convection. The present results are in agreement with experimental results and expand the numerical results of other authors.
引用
收藏
页码：155 / 158
页数：4
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