Air entrainment of hydraulic jump aeration basin

被引：18

作者：

Wu, Jian-hua ^{[1
]}

Zhou, Yu ^{[1
]}

Ma, Fei ^{[1
]}

机构：

[1] Hohai Univ, Coll Water Conservancy & Hydropower Engn, Nanjing 210098, Jiangsu, Peoples R China

来源：

JOURNAL OF HYDRODYNAMICS | 2018年 / 30卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Air entrainment; hydraulic jump; hydraulic jump aeration basin; stepped spillway; submerged degree; FLOW;

D O I：

10.1007/s42241-018-0088-4

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In order to avoid the cavitation damage and the decrease of the energy dissipation of the stepped spillways with a large unit discharge, the air entrainments of the hydraulic jump aeration basin (HJAB) are theoretically and experimentally investigated for the hydraulic-jump-stepped spillway developed by the authors. It is shown that the submerged degree of the hydraulic jump and the air concentration in the measuring section are all functions of the dimensionless discharge, the length and the end sill height of the HJAB. The submerged degree sigma decreases with the increase of the dimensionless discharge or the dimensionless length of the HJAB, but increases with the increase of the dimensionless height of the end sill of the HJAB. The flow regimes near the critical hydraulic jump, namely, at sigma = 1.0, have the best effect of the air entrainment for the flow at the measuring section and then that of the stepped spillway.

引用

页码：962 / 965

页数：4