EFFECTS OF VEGETATION ARRANGEMENT PATTERN ON FLOW RESISTANCE IN AN OPEN CHANNEL

被引：1

作者：

Ohmoto, Terunori ^{[1
]}

Tanaka, Takayuki ^{[1
]}

机构：

[1] Kumamoto Univ, Grad Sch Sci & Technol, Kumamoto 8608555, Japan

来源：

ADVANCES IN WATER RESOURCES AND HYDRAULIC ENGINEERING, VOLS 1-6 | 2009年

关键词：

vegetation; flow resistance; flow structure; momentum transport; PIV; EMERGENT VEGETATION;

D O I：

10.1007/978-3-540-89465-0_83

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

Vegetation community are often observed to grow in stripe pattern or patches within many stream channel. It is necessary to predict or understand stage-discharge relationships and velocity distributions in partially vegetated channel for enhancements of flood protection and river environment. In this paper, the influence that arrangement patterns of vegetation zones gave to the flow resistance in an open-channel was examined experimentally. The water-surface fluctuations and flow velocity were measured by stage gauge using ultorasonic wave and Particle Image Velocimetry method respectively. Results showed that the relationship between flow depth and discharge significantly depended on the arrangement patterns and the reason could be explained by the difference of momentum transport from the relatively fast flow in non-vegetated zone to the slow flow within the vegetated zone.

引用

页码：478 / 484

页数：7