边坡高扬程虹吸排水管流态特征研究

Saved in:
Bibliographic Details
Published in浙江大学学报：A卷英文版 Vol. 15; no. 1; pp. 22 - 30
Main Author Yue-liang CAI Hong-yue SUN Yue-quan SItANG Xiao-liang XIONG
Format Journal Article
LanguageEnglish
Published 2014
Subjects
弹状流
液面形状
虹吸排水
虹吸管径
贴壁流
Online AccessGet full text

Cover

More Information
Bibliography:33-1236/O4
This paper presents a study of flow characteristics in high-lift siphon drains. A laboratory test was conducted to investigate the effects of hose diameter and flow velocity on siphon drainage. Three types of water flow were observed and ana- lyzed. The experimental results show that the flow characteristics of siphon drainage are significantly influenced by the hose diameter. Water flows in thc form of a wall pressing flow in a large diameter siphon hose （e.g., larger than 5.0 mm） under low flow velocity, which leads to discontinuous siphon drainage. However, water flows in the form of an integral slug flow in a small diameter siphon hose （e.g., smaller than 4.0 mm） under low flow velocity, which leads to continuous siphon drainage. Based on experimental observations, a thermodynamic derivation of the threshold of siphon hose diameter for continuous siphon drainage was analytically conducted. In slope engineering, a 3.6 mm polyurethane （PU） hose is recommended for siphon drainage.
Siphon drainage, Wall pressing flow, Slug flow, Siphon hose diameter, Flow characteristics
ISSN:1673-565X
1862-1775