基于SPH的大坝泄流过程仿真分析  

Simulation analysis of dam discharge process based on smooth particle hydrodynamics(SPH)

作　　者：何鲜峰 汪自力[1,2] 张健锋[3] 何启[4] HE XianFeng;WANG ZiLi;ZHANG JianFeng;HE Qi(Department of Civil Engineering Mechanics, Yellow River Institute of Hydraulic Research, Zhengzhou 450003, China;MWR Center for Levee Safety and Disease Prevention Engineering and Technology Research, Zhengzhou 450003, China;Sanmenxia Yellow River Pearl Group Co., LTD, Sanmenxia 472000. China;College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China)

机构地区：[1]黄河水利委员会黄河水利科学研究院工程力学研究所,郑州450003 [2]水利部堤防安全与病害防治工程技术研究中心,郑州450003 [3]三门峡黄河明珠集团有限公司,三门峡472000 [4]河海大学水电学院,南京210098

出　　处：《中国科学：技术科学》2019年第1期109-114,共6页Scientia Sinica(Technologica)

基　　金：国家重点研发计划项目(编号:2016YFC0401610);水利公益性行业科研专项(编号:201401022);黄河水利科学研究院基本科研业务费专项(编号:HKY-JBYW-2014-04;HKY-JBYW-2017-21)资助

摘　　要：采用SPH方法,对溢流坝泄流过程进行了数值仿真.通过人工黏度、固壁边界处理、弱可压缩状态方程的使用,模拟了溢流坝泄流坝面水流演进、水舌空中变化、再入水过程,以及下游水垫塘涌浪变化过程.数值模拟结果和物理模型实验结果的对比分析表明,数值模拟得到的水面线、抛射距离、水舌入水深度与物理模型实验结果基本相符,说明基于SPH方法的数值模拟在一定程度上可以替代物理模型实验进行大坝泄流分析和优化设计.The numerical simulation of spillway discharge process is carried out by smoothed particle hydrodynamics(SPH)method.Through the artificial viscosity,the boundary treatment,and the weakly compressible state equation,the evolution of water flow,the change of water tongue,the process of water reentry,and the variation process of the surge in the downstream plunge pool are simulated.The comparison between numerical simulation results and physical model test results show that the numerical simulation of surface line,throwing distance,underwater penetration of water tongue and the physical model test results are basically consistent.It explains that numerical simulation based on SPH method can substitute the physical model test for dam discharge analysis and optimization design to a certain extent.

关 键 词：SPH 大坝泄流 过程仿真 优化设计 

分 类 号：TV135.2[水利工程—水力学及河流动力学]