Exponential Tails in Two-Dimensional Rayleigh-Bénard Convection

Exponential Tails in Two-Dimensional Rayleigh-Bénard Convection
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DOI：
10.1209/0295-5075/21/3/009
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发表时间：
1993-01
期刊：
EPL
影响因子：
1.8
通讯作者：
F. Massaioli;R. Benzi;S. Succi
F. Massaioli;R. Benzi;S. Succi
中科院分区：
物理与天体物理4区
文献类型：
--
作者：
F. Massaioli;R. Benzi;S. Succi

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本文通过对二维瑞利-贝纳德对流的数值模拟，研究了温度场的概率密度函数。温度的PdF呈现指数尾，与先前的实验室实验和数值模拟结果一致。给出了一种新的理论解释。
In this letter we investigate the probability density function (PdF) of the temperature field by numerical simulations of Rayleigh-Benard convection in two spatial dimensions. The PdF of the temperature shows exponential tails, consistently with previous laboratory experiments and numerical simulations. A new theoretical explanation for the exponential tail of the PdF is offered.