Large Eddy Simulation with Three kinds of Sub-grid Scale Model on Temperature Fluctuation of Hot and Cold Fluids Mixing in a Tee

被引：1

作者：

Lu, Tao ^{[2
]}

Wang, Yongwei ^{[2
]}

Wang, Ping ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Energy & Power Engn, Dalian 116024, Peoples R China

[2] Beijing Univ Chem Technol, Sch Mech & Elect Engn, Beijing 100029, Peoples R China

来源：

MECHANICAL ENGINEERING AND MATERIALS, PTS 1-3 | 2012年 / 152-154卷

基金：

中国国家自然科学基金;

关键词：

Large eddy simulation; Temperature fluctuation; Mixing; THERMAL FATIGUE; JET; FLOW; LES;

D O I：

10.4028/www.scientific.net/AMM.152-154.1307

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In the present work the temperature fluctuations in a mixing tee were simulated on FLUENT platform using the large-eddy simulation (LES) turbulent flow model with three kinds of sub-grid scale (SGS) models such as Smagorinsky-Lilly (SL) model, Wall-adapted Local Eddy-viscosity (WALE) model, and Kinetic-energy transport (KET) model. The normalized mean and root mean square temperatures were predicted and analyzed with consideration of buoyancy. The numerical results showed that buoyancy greatly influences the mixing flow and the thermal striping phenomena were quite obvious. These three SGS models have somewhat similar accuracies for prediction of the temperature fluctuation and thermal stripping in a tee of mixing hot and cold fluids.

引用

页码：1307 / +

页数：2

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