基于SWE-SPH的下游为湿河床的溃坝水流模拟  

Simulation of dam-break flow with wet bed at downstream based on SWE-SPH

作　　者：郑仙佩 顾声龙[1] 任立群[1] ZHENG Xianpei GU Shenglong REN Liqun(School of Water Resources and Electric Power, Qinghai University ,Xining 810016 , China)

机构地区：[1]青海大学水利电力学院

出　　处：《青海大学学报（自然科学版）》2016年第5期40-44,共5页Journal of Qinghai University(Natural Science)

基　　金：国家自然科学基金项目(51479087);水沙科学与水利水电工程国家重点实验室开放研究基金资助课题(sklhse-2015-B-02)

摘　　要：为了更好地模拟溃坝水流状态,避免有限元等网格法中的网格缠结和扭曲问题,本文将光滑粒子流体动力学法应用在浅水波方程中,建立二维溃坝水流数值模型,依次模拟瞬时全溃、非对称局部溃坝、对称溃坝3种工况下的溃坝水流流动情况,仿真模拟结果表明:该方法合理准确,揭示出了溃坝水流流动细节,且自由表面处理简单。In order to reflect the flow state of dam - break and avoid the mesh tangles and distortionproblem in the mesh method such as finite element, the smoothed particle hydrodynamic method（SPH） was applied to shallow water equations （SWE） to construct 2D numerical simulate model ofdam - break water flow. The instantaneous collapse, asymmetric and symmetric dam break weresimulated. The SPH method is reasonable and accurate, and can reveal the details of dam breakflow. In addition, the free surface is disposed simply.

关 键 词：浅水波方程 光滑粒子流体动力学法 溃坝水流 

分 类 号：TV131[水利工程—水力学及河流动力学]