强脉冲X射线辐照含间隙多层材料动力学效应的SPH模拟  

Numerical Simulation of SPH for Dynamics Effect of Multilayer Discontinuous Structure Irradiated by Impulse X-ray

作　　者：徐彬彬[1] 汤文辉[1] 冉宪文[1] 徐志宏[1] 陈华[1] 

机构地区：[1]国防科学技术大学理学院技术物理研究所,湖南长沙410073

出　　处：《原子能科学技术》2012年第B09期48-52,共5页Atomic Energy Science and Technology

摘　　要：脉冲X射线辐照材料时,会在材料中形成能量沉积并产生热击波。目前一般使用差分法对所形成的热击波进行数值模拟,但若考虑多层材料之间的间隙,差分法处理起来比较困难。本文使用SPH方法对脉冲X射线辐照含间隙多层材料进行了数值模拟。结果表明,各层材料之间的缝隙对热击波的强度具有一定的影响,而对表面气化反冲冲量没有影响。When high energy X-ray irradiates material,it will cause energy deposition in materials,and generates thermal shock wave.At present,finite difference method is used to the numerical simulation of thermal shock usually,but if considering the interspace between the multilayer materials,the difference method will be more difficult.This paper used the SPH method to simulate multilayer discontinuous structure irradiated by high energy X-ray,and the results show that the gap between the materials of each layer has a certain influence on the thermal shock wave intensity,but doesn＇t have any affect to gasification impulse.

关 键 词：脉冲X射线 能量沉积 热击波 间隙 SPH 

分 类 号：O351.2[理学—流体力学]