STRUCTURE OF FLOW IN HYDRAULIC JUMPS

被引：93
|
作者：
LONG, DJ [1 ]
RAJARATNAM, N [1 ]
STEFFLER, PM [1 ]
SMY, PR [1 ]
机构：
[1] UNIV ALBERTA,DEPT ELECT ENGN,EDMONTON T6G 2E1,ALBERTA,CANADA
来源：
JOURNAL OF HYDRAULIC RESEARCH | 1991年 / 29卷 / 02期
关键词：
Fourier Analysis - Surface Roller - Toe Position - Water Spills;
D O I：
10.1080/00221689109499004
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A high-speed photographic study was made of the hydraulic jump. It was found that the surface roller was made up of several vortices. These vortices are generated in the early part of the jump and travel downstream. As they move downstream, they grow by pairing. At the same time, water spills down the steepened surface to replenish the toe and subsequently is rolled up into new vortices. A Fourier analysis of the time series of the toe position indicates a cyclic mechanism, the frequencies of which appear to scale with the upstream velocity and downstream depth.
引用
收藏
页码：207 / 218
页数：12
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