Investigation of Temperature Statistics in Turbulent Rayleigh-Benard Convection using PDF Methods

被引：0
|
作者：
Luelff, J. [1 ]
Wilczek, M. [1 ]
Friedrich, R. [1 ]
机构：
[1] Univ Munster, Inst Theoret Phys, D-48149 Munster, Germany
来源：
13TH EUROPEAN TURBULENCE CONFERENCE (ETC13): CONVECTION, ROTATION, STRATIFICATION AND BUOYANCY EFFECTS | 2011年 / 318卷
关键词：
PENALIZATION; VELOCITY; DIPOLE;
D O I：
10.1088/1742-6596/318/8/082008
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Rayleigh-Benard convection in the turbulent regime is studied using statistical methods. Exact evolution equations for the probability density function of temperature and velocity are derived from first principles within the framework of the Lundgren-Monin-Novikov hierarchy. The unclosed terms arising in the form of conditional averages are estimated from direct numerical simulations. Focussing on the statistics of temperature, the theoretical framework allows to interpret the statistical results in an illustrative manner, giving deeper insight into the connection between dynamics and statistics of Rayleigh-Benard convection.
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页数：9
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