Numerical simulation of dynamical aspects of natural convection flow in a double-skin facade

被引：32
|
作者：
Popa, Catalin [1 ]
Ospir, Dan [1 ,2 ]
Fohanno, Stephane [1 ]
Chereches, Cristian [2 ]
机构：
[1] Univ Reims, GRESPI Thermomecan, F-51687 Reims 2, France
[2] Fac Civil Engn & Bldg Equipment Tech Univ Gh Asac, Iasi 700050, Romania
来源：
ENERGY AND BUILDINGS | 2012年 / 50卷
关键词：
Double skin facade; Natural convection; Numerical simulation; Laminar flow; PARALLEL-PLATE CHANNEL;
D O I：
10.1016/j.enbuild.2012.03.042
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A dynamic study of the flow in a double-skin facade was carried out numerically for modified Rayleigh numbers in a range corresponding to the boundary layer-type flow in the laminar regime. The facade is modeled by an asymmetrically heated vertical plane channel. 2D numerical simulations have been carried out with the finite volume approach. Velocity profiles show the asymmetric character of the flow. The presence of a recirculation zone at the channel outlet near the unheated wall has been highlighted. Numerical results are compared with experiments carried out in water. This simulations allows finding the patterns of the recirculation zone observed in the experiments. Numerically predicted recirculation lengths are overestimated by about 6% compared with the experimental results. (c) 2012 Elsevier B.V. All rights reserved.
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页码：229 / 233
页数：5
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