Flow through porous fences in thick boundary layers: comparisons between laboratory and numerical experiments

被引：64
|
作者：
Packwood, AR [1 ]
机构：
[1] Univ Surrey, Sch Mech & Mat Engn, Guildford GU2 5XH, Surrey, England
来源：
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS | 2000年 / 88卷 / 01期
关键词：
porous fences; turbulence modelling; drag prediction;
D O I：
10.1016/S0167-6105(00)00025-8
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Results of a comparison between wind-tunnel tests and CFD modelling for flow downstream of a two-dimensional porous fence in a thick boundary layer are presented. Three porosities are considered, 0%, 23% and 50%, and two turbulence models are tested, modified k-epsilon and full Reynolds stress. Both models are shown to have weaknesses but overall the much simpler, modified k-epsilon model worked surprisingly well. A method for determining the resistance of the porous fences for use in CFD modelling is developed and tested. This is shown to work reasonably well for the thin fences considered here but further work on modelling of thick porous blockages is still required. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：75 / 90
页数：16
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