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On the dissipation rate of temperature fluctuations in stably stratified flows
Environmental Fluid Mechanics ( IF 1.7 ) Pub Date : 2020-08-25 , DOI: 10.1007/s10652-020-09761-7
Sukanta Basu , Adam W. DeMarco , Ping He

In this study, we explore several integral and outer length scales of turbulence which can be formulated by using the dissipation of temperature fluctuations (\(\chi\)) and other relevant variables. Our analyses directly lead to simple yet non-trivial parameterizations for both spatially-averaged \(\overline{\chi }\) and the structure parameter of temperature (\(C_T^2\)). For our purposes, we make use of high-fidelity data from direct numerical simulations of stratified channel flows.



中文翻译:

稳定分层流中温度波动的耗散率

在这项研究中,我们探索了湍流的几个积分和外部尺度,这些尺度可以通过利用温度波动的耗散(\(\ chi \))和其他相关变量来确定。我们的分析直接导致对空间平均\(\ overline {\ chi} \)和温度的结构参数(\(C_T ^ 2 \))进行简单但重要的参数化。为了我们的目的,我们利用分层通道流直接数值模拟中的高保真数据。

更新日期:2020-08-25
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