基于SBFE虚粒子边界的结构入水数值模拟  

SBFE Virtual Particle Boundary Method in Water Entry

作　　者：李上明[1] 赵梓斌 LI Shangming;ZHAO Zibin(Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621000, China)

机构地区：[1]中国工程物理研究院总体工程研究所,四川绵阳621000

出　　处：《兵器装备工程学报》2021年第12期153-158,共6页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金项目(11272299)。

摘　　要：通过联合比例边界有限元法(SBFEM)和光滑粒子法(SPH),提出了一种基于SPH框架下新的无反射边界—SBFE虚粒子边界,该SBFE虚粒子边界能够准确的模拟边界波的透射过程,能够以较小计算域模拟无穷域的特征,从而显著地提高SPH算法模拟无穷域流体的计算效率。最后,将SBFE虚粒子边界应用于无穷水域的结构入水数值模拟,验证了SBFE虚粒子边界模拟无穷域流体的准确性。The paper combined the scaled boundary finite element method(SBFEM)with the smoothed particle method(SPH).We proposed a new non-reflecting boundary called SBFE virtual particle boundary based on SPH.This boundary can simulate the transmission process of pressure wave on the boundary.Because of these advantages,it could significantly improve the computational efficiency of SPH algorithm in infinite domain simulation.To verify the accuracy of this boundary,the SBFE virtual particle boundary was applied to the numerical simulation of the water entry in the infinite water domain.

关 键 词：SBFEM SPH SBFE虚粒子边界 无反射边界 结构入水 

分 类 号：TJ630.1[兵器科学与技术—武器系统与运用工程] TJ83