EFFECTS OF THERMAL-RADIATION ON AIR-FLOW WITH DISPLACEMENT VENTILATION - AN EXPERIMENTAL INVESTIGATION

被引：30

作者：

LI, YG

SANDBERG, M

FUCHS, L

机构：

[1] Department of Mechanics/Applied Computational Fluid Dynamics, The Royal Institute of Technology

[2] The National Swedish Institute for Building Research, S-801 29 Gävle

来源：

ENERGY AND BUILDINGS | 1993年 / 19卷 / 04期

关键词：

D O I：

10.1016/0378-7788(93)90011-I

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Various wall surface emissivities are used to examine the radiative effects on the vertical air temperature profile and gravity current in a full-scale model of a room ventilated by displacement. The vertical temperature stratification is a combined effect of convection, conduction and radiation. The radiative effects are to heat the floor surface and alter the flow rate in the thermal plumes, which weakens the gravity current and lowers the stratification level. The intermittence at the upper edge of the gravity current is illustrated by studying its turbulent structure. The data gathered in this work are suitable for validating flow and radiation models.

引用

页码：263 / 274

页数：12

共 24 条

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