力学学报 ›› 2010, Vol. 42 ›› Issue (6): 1042-1049.doi: 10.6052/0459-1879-2010-6-lxxb2009-459

• 研究论文 • 上一篇    下一篇

爆炸冲击波绕流的三维数值模拟研究

郝莉1,马天宝2,王成2,吴开腾3   

  1. 1. 北京建筑工程学院 理学院
    2. 北京理工大学爆炸科学与技术国家重点实验室
    3. 内江师范学院 四川省高等学校数值仿真重点实验室
  • 收稿日期:2009-07-22 修回日期:2010-03-11 出版日期:2010-12-10 发布日期:2010-12-02
  • 通讯作者: 王成 E-mail:wangcheng@bit.edu.cn

Three dimensional numerical simulation study on the flow of the explosion shock wave around the wall

1,Ma Tianbao2, 2, 3   

  1. 1. Science School, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
    2. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
    3. Key Laboratory of Numerical Simulation of Sichuan Province, College of Mathematics and Information Science, Neijiang Normal University, Neijiang 641112, China
  • Received:2009-07-22 Revised:2010-03-11 Online:2010-12-10 Published:2010-12-02

摘要: 对爆炸冲击波绕流问题采用可压缩流体模型建立了质量、动量和能量的偏微分守恒方程组, 基于多物质流体Euler型算法, 采用算子分裂格式, 运用体积份额法处理多介质界面, 用自 行开发的三维数值模拟程序MMIC3D模拟计算了三维空中爆炸的爆源附近和爆炸场中冲击波 流场的发展规律, 研究了挡墙拐角处绕流的形成和变化情况, 分析比较了挡墙的位置、形状 对挡墙后爆炸冲击波的影响, 并与经验公式进行了比较研究. 数值计算基本符合物理规律, 说明文中采用的模型和算法是合理的, 为工程设计减压设施提供了数值计算依据.

关键词: 挡墙

Abstract: The partial differential conservation equations for mass, momentum and energy are applied by adopting the compressible fluid model for the explosion flow field. Based on the Eulerian algorithm of multi-material in cell (MMIC), the operator splitting scheme is used, and the moving interface is treated by volume ratio method. The development of the shock wave near the explosion source and in the explosion field caused by three-dimensional air explosion are simulated using three-dimensional numerical simulation code MMIC3D compiled by authors. The formation and change of the flow field around the corner wall are studied. Furthermore the effects of the explosion shock wave are analyzed and compared with the empirical formula because of different locations and different shapes of the protective wall. The simulation results turn out to be in full agreement with the principle of physics. It also indicates that the model and algorithm presented in this paper are proper, thus the numerical simulation can be used for engineering design of decompression facilities.

Key words: protective wall

中图分类号: 

  • O347.5