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流动系统中爆轰波传播特性的数值模拟
  • 期刊名称：爆炸与冲击
  • 时间：0
  • 页码：593-597
  • 语言：中文
  • 分类：O382[理学—流体力学;理学—力学]
  • 作者机构：[1]南京理工大学瞬态物理国家重点实验室,江苏南京210094
  • 相关基金：国家自然科学基金项目（10872096）
  • 相关项目：旋转爆轰及其在推进中的应用
作者： Fan, Bao-Chun|Zhang, Xu-Dong|Gui, Ming-Yue|Pan, Zhen-Hua|
关键词： 爆炸力学, 爆轰波, C-J爆轰理论, 流动系统, mechanics of explosion, detonation wave, C-J detonation theory, flow system
中文摘要：

基于带化学反应的二维Euler方程,采用氢气/空气的9组分19步基元反应简化模型,对充有当量比的氢气/空气预混气体的矩形爆轰流场中爆轰波的传播过程进行了数值模拟,讨论了均匀来流对爆轰波传播的影响。数值结果表明,在均匀来流的影响下,上游方向上的燃烧强度大于C-J爆速,下游方向上的燃烧强度小于C-J爆速;上游方向传播的爆轰波的阵面压力大于下游方向传播的爆轰波的阵面压力。所以,经典的C-J爆轰理论并不适用于流动系统中爆轰波传播特性的研究。

英文摘要：

The rectangular detonation flow field filled with hydrogen-air is simulated numerically based on multicomponent two-dimensional Euler equation,and effects of uniform incoming flow on detonation wave propagation were discussed.From the numerical results,depending on the flow velocity,the apparent propagation velocity of a detonation wave is higher in the upstream direction and lower in the down stream direction than vC-J.The pressure of the upstream moving detonation is higher than that of the downstream moving detonation.As a result,investigation of detonation wave propagation in a flow system by classical C-J detonation theory is unsuitable.

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旋转爆轰及其在推进中的应用
期刊论文 52
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