Radiation effects on mixed turbulent natural and forced convection in a horizontal channel using direct numerical simulation

被引：23

作者：

Sakurai, Atsushi ^{[1
]}

Matsubara, Koji ^{[1
]}

Takakuwa, Kenji ^{[1
]}

Kanbayashi, Ryo ^{[1
]}

机构：

[1] Niigata Univ, Dept Mech & Prod Engn, Niigata 9502181, Japan

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2012年 / 55卷 / 9-10期

关键词：

Radiative heat transfer; Turbulence statistics; Mixed convection; Direct numerical simulation; LARGE-EDDY SIMULATION; HEAT-TRANSFER; SURFACE RADIATION; SCATTERING MEDIA; FLOW; NONGRAY; FLAMES; INTENSITIES; GAS;

D O I：

10.1016/j.ijheatmasstransfer.2012.01.006

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The purpose of this study is to clarify the radiation effects on mixed turbulent convection in a horizontal channel. The present study provides turbulence statistics using direct numerical simulation (DNS) in an optically thin medium. When the radiation effect is considered, the flow structure and the temperature distribution in the channel change with an increase in the optical thickness of the fluid. The radiation effect changes the distributions of the temperature fluctuation intensity and the turbulent heat flux. These radiation effects on mixed convection can be clearly explained by the turbulence statistics obtained from the DNS results. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：2539 / 2548

页数：10

共 37 条

[1] Large-eddy simulation of mixed convection-radiation heat transfer in a vertical channel [J].