摘要
为了研究泄压空间内爆炸爆轰产物运动及能量演化规律,采用五阶WENO有限差分格式,通过耦合求解两组分可压缩欧拉方程,自主编写了泄压空间内炸药爆炸过程二维数值计算程序。采用验证的程序数值探讨了泄压口大小、泄压口位置、炸药爆炸位置对爆轰产物运动及能量演化的影响规律。研究表明:上述因素不仅改变了爆轰产物的运动形态,同时改变了产物的泄出过程;泄压口的存在主要加快气体内能的泄出过程。本文研究可为舱室内爆炸毁伤评估提供一定的参考和依据。
In order to study the dynamic motion of detonation products and energy evolution generated by the explosion of high explosive inside a venting space,the fifth-order WENO finite difference scheme is adopted to solve the two components compressible Euler equation.The two-dimensional numerical calculation code for simulating blast in a venting cabin is then developed.Then,the validated code is used to simulate three typical kinds of explosion process.And,the influences of the size of venting holes,the number of venting holes,and the position of the explosives on dynamic process of detonation products and energy evolution are discussed.The results show that these factors not only change the dynamic motion of the detonation products,but also change the process of the release of the products.The existence of venting holes mainly speeds up the process of gas internal energy release.The research in the present work provides some reference and guidance for the evaluation of explosion damage.
作者
徐维铮
吴卫国
Xu Weizheng;Wu Weiguo(Key Laboratory of High Performance Ship Technology of Ministry of Education,Wuhan University of Technology,430063,Wuhan,China;Departments of Naval Architecture,Ocean and Structural Engineering,School of Transportation,Wuhan University of Technology,430063,Wuhan,China)
出处
《应用力学学报》
CAS
CSCD
北大核心
2019年第5期1199-1204,1265,共7页
Chinese Journal of Applied Mechanics
基金
国家自然科学基金项目(51409202)
国防基础研究项目(B1420133057)
中央高校基本科研业务费(2016-YB-016)
关键词
泄压空间内爆炸
五阶WENO格式
数值计算
爆炸波
爆轰产物
气体能量
explosion in a venting space
fifth-order WENO scheme
numerical simulation
blast wave
detonation product
gas energy
