泄压空间内爆炸温度载荷的影响规律研究(二)--泄压口大小  

Research on influence laws on the explosion temperature inside venting space(2)——venting hole size

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 Engincering,School of Transporation,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3期1337-1342,I0029,I0030,共8页Chinese Journal of Applied Mechanics

基　　金：国防基础研究项目(B1420133057);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)。

摘　　要：基于自主开发的程序开展泄压空间内炸药爆炸温度场数值计算,初步探讨泄压口大小对泄压空间内爆炸温度载荷的影响规律。研究表明:准静态温度峰值、准静态温度平稳值与泄压口边长近似呈线性关系,且随着泄压口边长的增大而减小;随着泄压口边长的增大,爆炸后期准静态温度直线衰减速率呈非线性关系;其他条件不变时,随着泄压口边长的增加,泄压对于温度载荷的降低效果更明显。Numerical calculation of explosion temperature field in venting space is carried out based on an in-house 3 D high precision numerical code,and the influence of venting hole sizes on temperature load in venting space is preliminarily discussed.The simulation results indicates that the peak quasi-static temperature and the stationary value of quasi-static temperature are approximately linear with profile sizes of venting holes,which decreases with the increase of the profile sizes of venting holes.The linear attenuation rate of quasi-static temperature increases nonlinearly at the later stage of explosion with the increase of the profile sizes of venting holes.Compared with the explosion in the closed space under the same initial conditions,with the increase of profile sizes of venting holes,the reduction effect of pressure relief on the temperature load is more obvious.

关 键 词：泄压空间 内爆炸 泄压口大小 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]