建筑屋面天沟挡水板的流体力学分析  

Fluid Dynamics Analysis of the Water Blocking Plate for Building Roof Gutter

作　　者：张晓波 谢思欣 黄嘉玲 Zhang Xiaobo;Xie Sixin;Huang Jialing(Guangdong Architectural Design and Research Institute Group Co.,Ltd.,Guangzhou,Guangdong 510010,China)

机构地区：[1]广东省建筑设计研究院集团股份有限公司,广东广州510010

出　　处：《中国建筑防水》2024年第11期37-41,46,共6页China Building Waterproofing

摘　　要：坡度较大的屋面天沟,雨水流速较大,由于湍流和急流的影响,雨水斗不能有效排水从而导致屋面积水渗水的情况时有发生;一般考虑设置挡水板,以提高排水效率。本文就常见的挡水板(常规型、马蹄涡型、左右错开型)进行了流体力学分析,确定各种挡水板的使用范围。For roof gutters with steep slopes,the flow rate of rainwater in the gutter is high.Due to the influence of turbulence and rapids,the rainwater hopper cannot effectively drain the water,resulting in water seepage in the roof area from time to time;generally,it is considered to install water blocking plates to improve drainage efficiency.This article conducts fluid dynamics analysis on common water blocking plates(conventional type,horseshoe vortex type,left-right staggered type)to determine the scope of use of various water blocking plates.

关 键 词：屋面天沟 排水 挡水板 削能 伯努利定理 急流 湍流 马蹄涡 

分 类 号：TU761.11[建筑科学—建筑技术科学] TU231