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J. Hefei Univ. Tech. (Nat. Sci.)

合肥工业大学学报(自然科学版)

JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY (NATURAL SCIENCE)

Competent Authorities: Ministry of Education of the People's Republic of China

Sponsor by: Hefei University of Technology

ISSN 1000-1646, CN 34-1001/N

Numerical simulation of wind-driven rain distribution on shaped building

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异型建筑风驱雨分布特性数值研究

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Jan.2026, Vol.49 No.1: 111-118

DOI: 10.3969/j.issn.1003-5060.2026.01.016

Authors

WANG Hui, ZHOU Quan, TANG Jing

(School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China)

Abstract and Keywords

Abstract: At present, the research on wind-driven rain (WDR) mainly focuses on rectangular buildings, and there is still a lack of research on WDR for commonly shaped buildings. Therefore, revealing the WDR distribution pattern of this type of building has become an essential work in the field of WDR. In this paper, the WDR numerical simulation method based on the Eulerian multiphase (EM) model is used to simulate and analyze the WDR distribution characteristics of three types of shaped buildings under different wind speeds and rainfall intensities, and the differences between the WDRs of the three types of shaped buildings and those of the typical rectangular buildings. The results show that, unlike the case of a continuous distribution of the WDR on the facade of a rectangular building, the facade WDR distribution of shaped buildings is more complicated due to the interference of their particular shapes. As the protruding portion of the windward facade effectively reduces the intrusion of WDR into the neighborhood, the catch ratio in the corner area tends to be 0. Compared to the rainfall intensity, the wind speed has a more significant effect on the catch ratio of the shaped building facade, and the maximum value of the catch ratio is increased by 0.8 when the rainfall intensity is kept constant and the wind speed is increased from 2 m/s to 10 m/s.

Keywords: wind-driven rain(WDR); shaped building; Eulerian multiphase(EM); catch ratio

作者信息

王辉，周荃，唐静

（合肥工业大学土木与水利工程学院，安徽合肥230009）

摘要和关键词

摘要: 目前关于风驱雨(wind-driven rain, WDR)的研究主要以矩形截面建筑作为研究对象, 针对常见的异型建筑 WDR 研究仍比较缺乏, 因此揭示该类型建筑的 WDR 分布规律已成为 WDR 领域的重要工作。文章基于欧拉多相流模型的 WDR 数值模拟方法, 模拟分析不同风速和降雨强度下 3 类异型建筑 WDR 分布特性及与典型矩形截面建筑 WDR 的差异。结果表明: 与矩形建筑立面 WDR 连续分布的情况不同, 异型建筑因其特殊外形的干扰, 立面 WDR 分布更为复杂; 由于迎风立面突出部分能有效减少 WDR 对附近区域的侵袭, 转角区域的抓取率趋近于 0; 相较于降雨强度, 风速对异型建筑立面抓取率的影响更大, 当降雨强度保持不变、风速从 2 m/s 增大至 10 m/s 时, 抓取率最大值提高 0.8。

关键词: 风驱雨；异型建筑；欧拉多相流；抓取率

Funding

国家自然科学基金资助项目（52468069）；亚热带建筑科学国家重点实验室开放课题资助项目（2020ZB24）

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