Large Eddy Simulation of turbulent buoyancy-driven flow with alternating staggered heating walls

被引：5

作者：

Li, W. ^{[1
]}

Yeoh, G. H. ^{[1
,2
]}

Timchenko, V. ^{[1
]}

机构：

[1] Univ New S Wales, Sch Mech & Mfg Engn, Sydney, NSW 2052, Australia

[2] Australian Nucl Sci & Technol Org, Menai, NSW 2234, Australia

来源：

APPLIED THERMAL ENGINEERING | 2015年 / 89卷

关键词：

Large eddy simulation; Turbulent buoyancy-driven flow; Staggered arrangement; Vertical configuration; Tilted configuration; INCLINED ISOTHERMAL PLATES; CONVECTION BOUNDARY-LAYER; NATURAL-CONVECTION; PARALLEL PLATES; AIR-FLOW; CHANNEL; MODEL; VENTILATION; CAVITY;

D O I：

10.1016/j.applthermaleng.2015.06.038

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Unsteady turbulent natural convection flow and heat transfer in an open-ended channel with non-uniformly heated walls has been investigated. A two-wall-heated staggered arrangement in both vertical and tilted (45 degrees) flow channels is analyzed to better understand the mechanism of perturbing the developing fluid and thermal boundary layers along the heated walls. Effect of different convective fluxes and fixed air gap distances on velocity and temperature fields is investigated. Large Eddy Simulation (LES) results demonstrate that better cooling enhancement is achieved in the two-wall-heated staggered arrangement with a higher chimney effect being experienced in the vertical configuration. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：558 / 568

页数：11

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