摘要
本文讨论了排江排海技术中垂向纯射流情况下“浅水”概念的定义.研究认为,“浅水”的概念应由H/D、E_0和流态相联系确定.本文研究了浅水淹没纯射流的二个流动特征:一是水面的隆起高度.所得平面和圆形射流情况下,最大隆起高度计算公式的数值与试验值符合较好;二是有横流情况下的流动转变,从理论上和试验上得到了平面、圆形和多孔射流的流动转变条件.
The discharge of contaminants into shallow lake,river or sea is an important problem in enviromental hydraulics.The definition of 'shallow water' is disscused in this paper,It is determined by the relative submergence depth H/D,the jet energy flux E0 and their relation to flow pattern of the jet.Two flow characteristics of vertical submerged jets in shallow water have been studied theoretically and experimentally.One is the superelevation of free surface.The proposed expressions of the maximum superelevation for planar and circular cases have been checked by experimental data;The other is flow transition with crossflow,and the criteria of flow transition have been proposed for planar,circular or multiple jets.
出处
《水利学报》
EI
CSCD
北大核心
1992年第9期31-38,共8页
Journal of Hydraulic Engineering
基金
国家自然科学基金
