SUBGRID EDDY DIFFUSIVITY FOR SCALAR TURBULENCE

机译：标量湍流的次网格涡流扩散率

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The turbulent transportation of scalar flux is usually modelled by eddy diffusivity with constant turbulent Prandtl number in RANS and LES. However we will show that turbulent Prandtl numbers are varying with molecular Prandtl numbers and behaves differently in RANS and LES. The turbulent Prandtl number has been found to be a linear reciprocal function of molecular Prandtl number, whereas the subgrid Prandtl numbers take a minimum around Pr=1.

机译：标量通量的湍流输运通常通过在RANS和LES中具有恒定湍流Prandtl数的涡流扩散率建模。但是，我们将证明湍流的Prandtl数随分子Prandtl数而变化，并且在RANS和LES中表现不同。已经发现湍流的普朗特数是分子普朗特数的线性倒数函数，而亚网格普朗特数在Pr = 1附近最小。

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来源
《International Conference on Fluid Mechanics; 20040720-30; Dalian(CN)》|2004年|P.174-177|共4页
会议地点 Dalian(CN)
作者
G. X. Cui; H.B. Zhou; C.X.Xu;
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作者单位

Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China;

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会议组织
原文格式 PDF
正文语种 eng
中图分类流体力学;
关键词
eddy diffusivity; scalar turbulence; Prandtl number; RANS; LES;

机译：涡流扩散；标量湍流；普朗特数； RANS； LES;

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1. Large eddy simulation of scalar turbulence using a new subgrid eddy diffusivity model [J] . Yu Guo, Chun-Xiao Xu, Guixiang Cui, International Journal of Heat and Fluid Flow . 2007,第2期

机译：使用新的亚网格涡扩散模型对标量湍流进行大涡模拟
2. An Extended Eddy‐Diffusivity Mass‐Flux Scheme for Unified Representation of Subgrid‐Scale Turbulence and Convection [J] . Zhihong Tan, Colleen M. Kaul, Kyle G. Pressel, Journal of Advances in Modeling Earth Systems . 2018,第3期

机译：亚网格尺度湍流和对流统一表示的扩展涡流-扩散质量通量方案
3. The effect of subgrid-scale models on grid-scale/subgrid-scale energy transfers in large-eddy simulation of incompressible magnetohydrodynamic turbulence [J] . Kessar M., Balarac G., Plunian F. Physics of plasmas . 2016,第10期

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4. SUBGRID EDDY DIFFUSIVITY FOR SCALAR TURBULENCE [C] . G. X. Cui, H.B. Zhou, C.X. Xu International Conference on Fluid Mechanics . 2004

机译：标量湍流的亚底涡流扩散率
5. Subgrid models for large eddy simulation: Scalar flux, scalar dissipation and energy dissipation. [D] . Chumakov, Sergei G. 2005

机译：大涡模拟的子网格模型：标量通量，标量耗散和能量耗散。
6. An Extended Eddy‐Diffusivity Mass‐Flux Scheme for Unified Representation of Subgrid‐Scale Turbulence and Convection [O] . Zhihong Tan, Colleen M. Kaul, Kyle G. Pressel, -1

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7. Comparative statistics of selected subgrid-scale models in large-eddy simulations of decaying, supersonic magnetohydrodynamic turbulence [O] . Grete, P., Vlaykov, D., Schmidt, W., 2017

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SUBGRID EDDY DIFFUSIVITY FOR SCALAR TURBULENCE

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