宽顶堰流的边界元法计算

本文采用理想无旋流模型，用边界元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。 

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

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.