Local entropy production in turbulent shear flows: a high-Reynolds number model with wall functions

Fabian Kock; Heinz Herwig

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Local entropy production in turbulent shear flows: a high-Reynolds number model with wall functions

机译：湍流剪切流中的局部熵产生：具有壁函数的高雷诺数模型

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Entropy production in incompressible turbulent shear flows of Newtonian fluids is analysed systematically and incorporated into a CFD code. There are four different mechanisms of entropy production: dissipation in a mean and fluctuating velocity field and heat flux in a mean and fluctuating temperature field. Based on asymptotic considerations wall functions for the four production terms are developed. These wall functions are mandatory when high-Reynolds number turbulent models are used since peak values of entropy production occur in the immediate vicinity of a wall. As an example pipe flow with heat transfer is analysed and compared to results from a direct numerical simulation with special emphasis on the entropy production in the near wall region.

机译：系统分析了牛顿流体不可压缩湍流剪切流中的熵产生并将其纳入CFD代码。熵产生有四种不同的机制：均值和波动速度场中的耗散以及均值和波动温度场中的热通量。基于渐近考虑，开发了四个生产项的墙函数。当使用高雷诺数湍流模型时，这些壁函数是必不可少的，因为熵产生的峰值出现在壁的附近。例如，对带有传热的管道流量进行了分析，并将其与直接数值模拟的结果进行了比较，并特别强调了近壁区域中的熵产生。

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来源
《International Journal of Heat and Mass Transfer》 |2004年第11期|p.2205-2215|共11页
作者
Fabian Kock; Heinz Herwig;
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作者单位

Arbeitsbereich Technische Thermodynamik (6-08), Technische Universitaet Hamburg-Harburg, Denickestmsse 15, 21073 Hamburg, Germany;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类热力工程理论;热学;
关键词
entropy production; dissipation; turbulent flow; asymptotic considerations; CFD; κ-ε model; wall-functions; second law analysis;

机译：熵产生耗散湍流渐近考虑CFDκ-ε模型壁函数二次律分析;

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机译：局部墙壁剪切应力测量用薄板浸没在壁湍流流动的子层中
2. Some new approaches to building and implementation of wall-functions for modeling of near-wall turbulent flows [J] . S. V. Utyuzhnikov Computers & Fluids . 2005,第7期

机译：建立和实现用于近壁湍流建模的壁函数的一些新方法
3. Entropy production calculation for turbulent shear flows and their implementation in cfd codes [J] . Fabian Kock, Heinz Herwig International Journal of Heat and Fluid Flow . 2005,第4期

机译：湍流剪切流的熵产计算及其在CFD代码中的实现
4. LOCAL ENTROPY PRODUCTION IN TURBULENT SHEAR FLOWS: A TOOL FOR EVALUATING HEAT TRANSFER PERFORMANCE [C] . H. Herwig, F. Kock International Symposium on Thermal Science and Engineering; 20051023-25; Beijing(CN) . 2005

机译：湍流剪切流中的局部熵产生：评估传热性能的工具
5. Model-based control of transitional and turbulent wall-bounded shear flows. [D] . Moarref, Rashad. 2012

机译：基于模型的过渡壁和湍流边界流的剪切流控制。
6. Entropy Generation Assessment for Wall-Bounded Turbulent Shear Flows Based on Reynolds Analogy Assumptions [O] . Matthias Ziefuss, Nader Karimi, Florian Ries, 2019

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7. Turbulent Transport by Diffusive Stratified Shear Flows: From Local to Global Models. II. Limitations of Local Models [O] . Damien Gagnier, Pascale Garaud 2018

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8. Turbulent Transport Modeling of Shear Flows around an Aerodynamic Wing. Development of Turbulent Near-Wall Model and Its Application to Recirculating Flows [R] . Amano, R. S. 1982

机译：气动机翼周围剪切流动的湍流输运模型。湍流近壁模型的研制及其在循环流动中的应用

Local entropy production in turbulent shear flows: a high-Reynolds number model with wall functions

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