聚能射流形成数值模拟  

Numerical simulation of shaped charge formation

作　　者：黄佳[1] 张昭[1] 张洪武[1] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室运载工程与力学学部工程力学系,大连116024

出　　处：《计算力学学报》2013年第S1期88-91,共4页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金(11172057);国家重点基础研究发展计划(2011CB013401)资助项目

摘　　要：基于网格自适应方法,ALE方法和SPH方法模拟了聚能射流形成过程。分析了射流头部速度随时间的变化关系,初始时刻位于药形罩不同位置的金属形成射流后的速度分布情况以及射流形成后沿射流方向射流整体速度分布情况。对比了三种方法用于模拟聚能射流形成问题的特点以及与实验的近似程度.数值模拟结果与射流形成过程与机理一致,可以体现射流形成特点,且SPH方法计算结果与实验数据最为接近.The formation process of the jet induced by shaped charge was simulated based on Adaptive method,ALE method and SPH method separately.The relationship between the jet head velocity and time,velocity and position on the shaped charge liner,and velocity distribution along the jet formed were analyzed.The characteristics and the approximation to relevant experimental data of the three numerical methods were compared.The results derived from all these three methods are in line with the forming process and mechanism of the jet.And the result derived from SPH method is the most approximating to the experimental data.

关 键 词：聚能射流 自适应 ALE SPH 

分 类 号：O358[理学—流体力学]