WCSPH方法模拟三角形底板水跃特性

使用弱可压光滑粒子动力学（weakly compressible smoothed particle hydrodynamics,WCSPH）方法，对弗劳德数Fr=1.68～6.08和不同波长与波高(S/t）之比的三角形波状底板上的水流流态、流速云图以及流速矢量图、共轭水深、消能率等水跃特性进行模拟研究。经对比分析：数值模拟结果与试验结果吻合较好；三角形波状底板表面会产生顺时针漩涡增加能量耗散，提高消能率，其水跃长度比光滑底板的小，且消能效果优于光滑底板。通过分析不同工况的水跃特性，确定了最佳三角形波状底板，其可使共轭水深和相对水跃长度分别降低14.15%和24.83%，而消能率比光滑底板提高48.52%。

Simulation of hydraulic jump characteristics of triangular bed based on WCSPH method

Hydraulic jump is a hydraulic phenomenon in open channel flow.In hydraulic conservancy projects,the severe scouring and erosion of the downstream riverbed are primarily induced by the violent turbulence of the downstream flow,thus establishing a corrugated bed in the stilling basin to develop hydraulic jump can improve the energy dissipation effect and reduce the damage to the buildings.At present,the research on the corrugated bed is mainly based on the experimental results and grid method of triangular corrugated bed.However,there are few systematic studies on the hydraulic jump characteristics of the triangular corrugated bed using WCSPH(Weakly Compressible Smoothed Particle Hydrodynamics) method.Exploring the hydraulic jump characteristics of the triangular corrugated bed has certain significance for the construction of the stilling basin.