Validation of CFD simulations of wind-driven rain on a low-rise building facade

Bert Blocken; Jan Carmeliet

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Validation of CFD simulations of wind-driven rain on a low-rise building facade

机译：Validation of CFD simulations of wind-driven rain on a low-rise building facade

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摘要

For decades, the assessment of the amount and intensity of wind-driven rain (WDR) falling onto building facades has been performed either by measurements or by semi-empirical methods such as the WDR index and the WDR relationship. In the past 15 years, numerical assessment methods based on Computational Fluid Dynamics (CFD) have secured their place in WDR research. Despite the widespread use of these methods at present, very few efforts have been made towards validation of CFD simulations of WDR on buildings. This paper presents a detailed validation study for a low-rise building of complex geometry, supported by a recently published, high-resolution full-scale wind, rain and WDR measurement dataset. It is shown that the CFD simulations can provide quite accurate predictions of the amount of WDR impinging on the building facade, for a number of very different rain events, and that the main discrepancies, in this study, are due to a simplification of the upstream wind conditions.

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来源
《Building and environment》 |2007年第7期|2530-2548|共19页
作者
Bert Blocken; Jan Carmeliet;
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作者单位

Building Physics and Systems, Technische Universiteit Eindhoven, P. O. Box 513, 5600 MB Eindhoven, The Netherlands;

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原文格式 PDF
正文语种英语
中图分类建筑科学;
关键词
wind-driven rain; driving rain; air flow; building; numerical simulation; computational fluid dynamics (CFD); validation; experimental data;

Validation of CFD simulations of wind-driven rain on a low-rise building facade

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