连续旋转爆轰三维流场的数值模拟

兵工学报 ›› 2012, Vol. 33 ›› Issue (5): 594-599.

连续旋转爆轰三维流场的数值模拟

潘振华，范宝春，张旭东，归明月

（南京理工大学瞬态物理国家重点实验室，江苏南京 210094）

收稿日期:2009-11-20 修回日期:2009-11-20 上线日期:2014-03-04
通讯作者: 潘振华 E-mail:lstpzh@yahoo.cn
作者简介:潘振华(1981—)，男，博士研究生
基金资助:
国家自然科学基金项目（10872096）

Numerical Simulation of Three-dimensional Flow Field of Continuous Rotating Detonation

PAN Zhen-hua, FAN Bao-chun, ZHANG Xu-dong, GUI Ming-yue

(State Key Laboratory of Transient Physics, Nanjing University of Science and Technology,Nanjing 210094, Jiangsu, China)

Received:2009-11-20 Revised:2009-11-20 Online:2014-03-04
Contact: PAN Zhen-hua E-mail:lstpzh@yahoo.cn

摘要/Abstract

摘要： 基于带化学反应的三维Euler方程，采用氢气-空气的9组分19步基元反应简化模型，对圆环形燃烧室内的旋转爆轰进行了数值模拟。数值计算采用二阶精度波传播算法和二阶Runge-Kutta时间分步算法。通过数值计算得出爆轰波传播扫描照片，与相关文献中通过高速扫描照相机得到的扫描照片相比符合的很好，并详细描述了连续旋转爆轰波的三维流场及传播特性。数值结果表明，爆轰波能够以旋转方式沿预混气层稳定传播。在侧向稀疏波和前一次爆轰产物的共同影响下，二次爆轰波形成爆轰亏损。

关键词: 爆炸力学, 连续旋转爆轰, 爆轰〖JP9〗波-〖JP〗激波复合波, 爆轰亏损

Abstract: The rotating detonation in a circular combustion chamber was numerically simulated by using a simplified 9-species, 19-step reaction model based on the three-dimensional Euler equations with chemical reaction. The numerical calculation method used is based on a second-order spatially wave propagation algorithm and a two-step Runge-Kutta time marching algorithm. The calculated streak picture is in qualitative agreement with the picture recorded by a high speed streak camera. The three dimensional flowfields induced by a continuous rotating detonation and the distinctive features of the rotating detonations were described in detail. The calculated result shows that the detonation wave can rotationally propagate along the combustible mixture layer, and the lateral rarefaction waves from the air and the previous detonation product lead to the detonation deficit.

Key words: mechanics of explosion, continuous rotating detonation, detonation-shock composite wave, detonation deficit

中图分类号:

O381

潘振华，范宝春，张旭东，归明月. 连续旋转爆轰三维流场的数值模拟[J]. 兵工学报, 2012, 33(5): 594-599.

PAN Zhen-hua, FAN Bao-chun, ZHANG Xu-dong, GUI Ming-yue. Numerical Simulation of Three-dimensional Flow Field of Continuous Rotating Detonation[J]. Acta Armamentarii, 2012, 33(5): 594-599.

参考文献

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