摘要
为了研究爆轰波与变径障碍物组的相互作用规律,基于化学反应Euler控制方程组,结合高精度加权本质无振荡WENO(Weighted Essentially Non-Oscillatory)空间离散格式和高精度ILW(Inverse Lax-Wendroff)固壁边界处理技术,研发了爆炸动力学的一致高精度仿真程序,并对爆轰波在内置圆柱障碍物组管道中的传播规律进行了研究,获得了爆轰流场内部反射以及绕射等作用下产生的清晰的复杂波系结构。研究结果表明:圆柱障碍物组半径的变化对绕射区45°方向上障碍物壁面上的最大压力影响较小;障碍物组半径不变的情况下获得的对称轴线上最大压力的最大峰值最大。
To study the interaction laws of detonation wave with the variable radius obstacle group,based on the chemical reaction Euler governing equations,a consistent high-order simulation program of explosion dynamics was developed by combining with the high-order WENO（ Weighted Essentially Non-Oscillatory） spatial discretization scheme and the high-order ILW（ Inverse Lax Wendroff） rigid wall boundary treatment technology. The propagation laws of detonation wave in the pipeline with the built-in cylindrical obstacle group were studied,and the complicated wave system structures resulting from the internal reflection and diffraction of the detonation flow field were obtained clearly. The results showed that the change of radius of the cylindrical obstacle group had little effect on the maximum pressure at the obstacle wall on the 45 degree direction of diffraction region. When the radius of the obstacle group was invariable,the largest peak of the maximum pressure on the axis of symmetry was the largest.
作者
丁建旭
杜群贵
王新华
吴雨蒙
DING Jianxu;DU Qungui;WANG Xinhua;WU Yumeng(China National Quality Supervision and Testing Center of Explosion-proof Equipment,Guangzhou Academy of Special Equipment Inspection ＆Testing,Guangzhou Guangdong 510760,China;School of Mechanical-Automotive Engineering,South China University of Technology,Guangzhou Guangdong 510006,China;School of Electro Mechanical Engineering,Guangdong University of Technology,Guangzhou Guangdong 510006,China)
出处
《中国安全生产科学技术》
CAS
CSCD
北大核心
2018年第6期33-38,共6页
Journal of Safety Science and Technology
基金
国家重点研发计划项目(2017YFC0804705)
关键词
爆轰波
高精度空间离散
高精度边界处理
障碍物组
detonation wave
high-order spatial discretization
high-order boundary treatment
obstacle group
