宽顶堰流的边界元法计算  

BEM Applied to the Calculation of Flow over Broad-Crested Weirs

作　　者：禹华谦 

出　　处：《西南交通大学学报》1990年第1期50-57,共8页Journal of Southwest Jiaotong University

摘　　要：本文采用理想无旋流模型,用边界无法计算过宽顶堰的水流流动,得到了流量系数、堰面压力分布、各种P/H的水面线以及内部流场等资料,并将它们与实验资料进行比较,表明该计算方法可行。在能头和自由液面位置均未知的情况下,本文提出了宽顶堰流的最小可能能头假设,解决了同时调整能头和自由液面位置的困难。Using the ideal irrotational flow model, boundary element method is applied to calculate the flow over broad-crested weirs. The data of the discharge coefficient, pressure distribution on weir surface, free-surface profile and inner flow field, etc. are obtained. In comparison with experimental results, it shows that such a method is feasible. In order to overcome the difficulty in both of the head and the free-surface profile being unknown, the presumption of minimum head for broad-crested weir is presented, so that these two can be adjusted simultaneously.

关 键 词：宽顶堰 自由面重力流 能头 边界元法 

分 类 号：TV132.2[水利工程—水力学及河流动力学]