Numerical Simulation of Shaped Charge Jet Using Multi-Phase SPH Method

作     者：强洪夫 王坤鹏 高巍然 QIANG Hongfu,WANG Kunpeng,GAO Weiran(Faculty of Mechanical and Propulsion Engineering,Xi’an Hi-Tech Institute,Xi’an 710025,China)

作者机构：Faculty of Mechanical and Propulsion Engineering Xi'an Hi-Tech Institute 

出 版 物：《Transactions of Tianjin University》 (天津大学学报（英文版）)

年 卷 期：2008年第14卷第B10期

页      面：495-499页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Supported by New Century Exellent Talents in University(NCET) in China for National "973"Program in China (No.61338) Innvoative Research Project of Xi’an Hi-Tech Institute(No.EPXY0806) 

主　　题：smoothed particle hydrodynamics (SPH) multi-phase large deformation shaped charge jet initiation 

摘      要：Since the jets and detonation gaseous products are separated by sharp interfaces, the traditional smoothed particle hydrodynamics (SPH) method is difficult to avoid the computational instability at interfaces. The multi-phase SPH (MSPH) method was applied to improving the stabil-ity, which smoothes the particle density and makes pressure continuous at interfaces. Numericalexamples of jet forming process were used to test capability of the MSPH method. The results show that the method remains algorithm stability for large density gradient between the jets and gaseous products and has potential application to both the explosion and the jet problems. The effect of initiation ways of the shaped charge was discussed as well.