A Corrected Solid Boundary Treatment Method for Smoothed Particle Hydrodynamics  

作　　者：CHEN Yun-sai ZHENG Xing JIN Shan-qin DUAN Wen-yang 

机构地区：[1]College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China [2]Department of Technology, National Deep Sea Center, Qingdao 266061, China

出　　处：《China Ocean Engineering》2017年第2期238-247,共10页中国海洋工程（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Grant No.51279041)

摘　　要：Smoothed Particle Hydrodynamics method （SPFI） has a good adaptability for simulating of free surface flow problems. However, there are some shortcomings of SPH which are still in open discussion. This paper presents a corrected solid boundary handling method for weakly compressible SPH. This improved method is very helpful for numerical stability and pressure distribution. Compared with other solid boundary handling methods, this corrected method is simpler for virtual ghost particle interpolation and the ghost particle evaluation relationship is clearer. Several numerical tests are given, like dam breaking, solitary wave impact and sloshing tank waves. The results show that the corrected solid boundary processing method can recover the spurious oscillations of pressure distribution when simulating the problems with complex geometry boundary.Smoothed Particle Hydrodynamics method （SPFI） has a good adaptability for simulating of free surface flow problems. However, there are some shortcomings of SPH which are still in open discussion. This paper presents a corrected solid boundary handling method for weakly compressible SPH. This improved method is very helpful for numerical stability and pressure distribution. Compared with other solid boundary handling methods, this corrected method is simpler for virtual ghost particle interpolation and the ghost particle evaluation relationship is clearer. Several numerical tests are given, like dam breaking, solitary wave impact and sloshing tank waves. The results show that the corrected solid boundary processing method can recover the spurious oscillations of pressure distribution when simulating the problems with complex geometry boundary.

关 键 词：SPH particle arrangement boundary treatment solitary wave impact sloshing wave 

分 类 号：O35[理学—流体力学]