冲击波在高原隧道中传播的试验与数值模拟  

Experimental and numerical simulation of shock wave propagation in plateau tunnels

作　　者：刘倡江 王振[1] 李胡军 张国凯[1] 吴汩 赵康博 LIU Changjiang;WANG Zhen;LI Hujun;ZHANG Guokai;WU Gu;ZHAO Kangbo(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Nanjing Fiberglass Research&Design Institute Co.,Ltd.,Nanjing 210012,China)

机构地区：[1]南京理工大学机械工程学院,南京210094 [2]南京玻璃纤维研究设计院有限公司,南京210012

出　　处：《兵器装备工程学报》2024年第10期34-43,共10页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金项目(52378401,42002266)。

摘　　要：为研究海拔效应对爆炸冲击波在隧道内传播规律的影响,开展了4500 m高原靶场的隧道口外爆炸试验,基于空气学理论提出的大气压强、空气密度、内能与海拔的关联性公式,建立了海平面、海拔1000、2500、4500 m条件下隧道数值计算模型,通过试验数据与仿真结果对比验证了数值模拟的有效性,分析了海拔条件对隧道内冲击波的超压参数的影响规律。研究结果表明,随着海拔的增加,隧道内相同测点处冲击波的超压峰值降低,冲击波的正压冲量减小,超压持续时间增加。根据上述计算结果,初步建立了隧道内冲击波超压和冲量预测方法。In order to study the influence of the plateau effect on the propagation pattern of the explosive shock wave in the trench,the explosion test outside the tunnel mouth of the 4500 m plateau range was carried out.Based on the correlation formula of atmospheric pressure,air density,internal energy and altitude proposed by the theory of aeronomy,the numerical calculation model of the pit under the conditions of sea level,altitude of 1000 m,2500 m and 4500 m was established,and the validity of the numerical simulation was verified through the comparison of experimental data and simulation results.We investigated the effect of altitude conditions on the overpressure parameters of shock waves in the trench.The results show that with the increase of altitude,the peak overpressure of the shock wave at the same measurement point in the pit decreases,the positive pressure impulse of the shock wave decreases,and the duration of overpressure increases.Based on the above calculation results,a preliminary method for predicting the overpressure and impulse of shock waves in the trench was established.

关 键 词：冲击波传播 海拔效应 超压 衰减机理 数值模拟 

分 类 号：O383.1[理学—流体力学]