Effect of particle diameter of porous media on flow and heat transfer in a mixing tee

被引：7

作者：

Wang, Yongwei ^{[1
]}

Lu, Tao ^{[1
]}

Wang, Kuisheng ^{[1
]}

机构：

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

来源：

ANNALS OF NUCLEAR ENERGY | 2012年 / 49卷

基金：

中国国家自然科学基金;

关键词：

Particle diameter; Flow; Heat transfer; The mixing tee; Temperature fluctuation; LARGE-EDDY SIMULATION; NUMERICAL-SIMULATION; T-JUNCTION; TEMPERATURE-FLUCTUATIONS; TURBULENT-FLOW; PLATE CHANNELS; CROSS-FLOW; FLUID-FLOW; LES; JET;

D O I：

10.1016/j.anucene.2012.05.031

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Numerical simulations have been carried out to investigate flow and heat transfer in a mixing tee filled with periodic sintered copper spheres. Three particle diameter cases of 28 mm, 14 mm and 7 mm with the array of 4 x 4, 8 x 8 and 16 x 16 at the same porosity of 0.3 have been calculated using large-eddy simulations and the Smagorinsky-Lilly sub-grid scale model. With the particle diameter decreasing, the mixture scale of hot and cold fluid tends to decrease in the mixing tee; the pressure drop of fluid flow through porous media increases. When the particle diameter ratios are 4:2:1 and the specific surface ratios are 1:2:4, the pressure drop ratios are 1:2:4; the thermal mixing in porous media is weakened because the temperature fluctuation decreases and the stratification of hot and cold fluids is observed. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：122 / 130

页数：9

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