重庆大学学报：自然科学版2011，Vol.34Issue(7)：125-130,6.
热辐射在倾斜通道热流场的作用
Effect of thermal radiation on thermal flow field in inclined tunnel
摘要
Abstract
The thermal radiation is the main factor affecting internal thermal flow field in a tunnel.This paper studies on two open ends of a channel inclined with angles of 10°,20° and 30° by experiments and numerical simulations.The experimental data agree well with the predicted results by using Large Eddy Simulation（LES） to solve N-S equations driven by the buoyancy flow.And the influence of thermal radiation on thermal flow field of tunnel with inclination angles from 10° to 30° at same heat source is obtained by comparing the experiment results and numerical resolutions of coupled with radiation model and without radiation model.Thermal radiation makes temperature near the upper wall of tunnel drop,and the influence of thermal radiation on bottom end of tunnel declines with the inclination angle increasing.However,the inclination angle has a little effect on temperature near the ceiling of the top end of tunnel.Simultaneously,the higher temperature zone leaning to the top end due to the thermal radiation is obtained,and the temperature at the bottom of the upper part of the tunnel increases.The findings of the study are important references for theory research of thermal flow field in inclined tunnels.关键词
热辐射/斜通道/浮力/大涡模拟Key words
thermal radiation/inclined channel/buoyancy/large eddy simulation分类
土木建筑引用本文复制引用
霍岩,郜冶,武红梅,邹剑峰..热辐射在倾斜通道热流场的作用[J].重庆大学学报：自然科学版,2011,34(7):125-130,6.基金项目
中央高校基本科研业务费专项基金资助项目 （）
高等学校博士学科点专项科研基金 （）
