环形方管道中爆轰胞格的三维研究

发布时间：2017-12-28 05:28

本文关键词：环形方管道中爆轰胞格的三维研究　出处：《爆炸与冲击》2016年05期 　论文类型：期刊论文

【摘要】：通过实验和三维数值模拟研究了爆轰波在环形管道内的传播。实验采用烟迹板记录了爆轰波的胞格结构。数值模拟基于带化学反应的三维Euler方程,采用五阶精度的WENO格式捕捉激波,采用具有TVD性质的三阶Runge-Kutta法处理时间项,并结合并行技术,对爆轰波的传播进行了数值研究。结果表明,环形管道外壁为收敛壁面,由于其对流场的压缩效应,外壁面及附近的胞格较小,且较均匀。而内壁为发散壁面,其对流场起稀疏效应,内壁面及附近的胞格较大,且呈周期性变化。同时,不同壁面的胞格结构均出现了拍波(slapping wave),其形状呈弯曲的折线。
[Abstract]:The propagation of detonation waves in a circular pipe is studied by experiments and three dimensional numerical simulation. The cell structure of detonation wave was recorded by a cigarette trail plate. The numerical simulation is based on the three-dimensional Euler equation with chemical reaction. The shock wave is captured by the WENO format of five order accuracy. The three order Runge-Kutta method with TVD property is used to process the time term. Combined with parallel technology, the propagation of detonation wave is numerically studied. The results show that the outer wall of the annular pipe is a convergent wall. Because of its compression effect on the flow field, the outer wall and the vicinity of the outer wall are smaller and more uniform. The inner wall is a divergent wall, and the convective field is sparsely effect, and the cells in the inner wall and nearby are large and periodic. At the same time, the pat wave (slapping wave) appeared in the cell structure of different walls, and its shape was curved.
【作者单位】：南京理工大学瞬态物理重点实验室;北京理工大学爆炸科学与技术国家重点实验室;
【分类号】：O382
【正文快照】： 2.北京理工大学爆炸科学与技术国家重点实验室,北京100081)在预混可燃介质中,由激波诱导的、以稳定方式传播的燃烧称为爆轰波。由于该燃烧的化学反应比较剧烈,因此具有极高的火焰传播速度,其产物也具有极高的温度和压力。这些特性使得爆轰具有两个重要的应用背景,一个是工业灾

【相似文献】