泄压空间内爆炸温度载荷的影响规律研究(一)——装药质量  

Influence of mass of explosives on explosion temperature load in venting space

作　　者：徐维铮[1,2] 吴卫国[1,2] 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)

机构地区：[1]武汉理工大学高性能舰船技术教育部重点实验室,武汉430063 [2]武汉理工大学交通学院船舶、海洋与结构工程系,武汉430063

出　　处：《应用力学学报》2020年第2期915-920,I0032,共7页Chinese Journal of Applied Mechanics

基　　金：国家自然科学基金(51409202,51509196);中央高校基本科研业务费资助(2016-YB-016);国防基础研究项目(B1420133057)。

摘　　要：基于自主开发的程序开展了泄压空间内炸药爆炸温度场数值计算,初步探讨了装药质量对泄压空间内爆炸温度载荷的影响规律。研究表明:①爆炸发生后,舱室内部气体被迅速加热升高到准静态温度峰值,且随着药量的增大,准静态温度直线上升速率增大;随着泄压口的持续泄压,舱室内部气体温度缓慢衰减到平稳值,且随着药量的增大,准静态温度直线衰减速率加快。②相较同初始条件密闭空间内爆炸,随着药量的增加,泄压对于温度载荷的降低效果更明显。本文的研究可为进一步探讨考虑后燃烧效应爆炸温度场数值计算及毁伤评估提供参考。Third-order WENO finite difference scheme is used to solve the coupled detonation products mass fraction transport equations and compressible Euler equations.The transient temperature is obtained by establishing the relation between internal energy and heat fusion.Then an in-house 3 D numerical calculation program of explosion temperature field in closed space is developed.Numerical calculation of explosive temperature field in venting space is carried out based on the developed code,and the influence of explosive mass on temperature load in venting space is preliminarily discussed.It is indicated from the simulation results that after the explosion,the gas in the cabin is rapidly heated up to the peak quasi-static temperature,and the linear rising rate of quasi-static temperature increases with the increase of explosive mass.With the continuous pressure relief of the venting hole,the gas temperature in the cabin slowly decays to a stationary value,and the linear attenuation rate of quasi-static temperature increases with the increase of explosive mass.Compared with the explosion in the closed space under the same initial condition,with the increase of explosive mass,the effect of pressure relief on the reduction of temperature load is more obvious.This research work can provide some references and guidance for further exploration of the temperature field regarding the complex combustion and the evaluation of explosion damage.

关 键 词：泄压空间内爆炸 数值计算 温度场 爆轰产物 准静态温度 

分 类 号：O354.5[理学—流体力学]