| 有、无障碍物爆震管起爆过程的CE/SE模拟 |
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| 引用本文： | 孙孔倩,樊未军,杨茂林.有、无障碍物爆震管起爆过程的CE/SE模拟[J].航空动力学报,2009,24(6):1242-1247. |
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| 作者姓名： | 孙孔倩 樊未军 杨茂林 |
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| 作者单位： | 北京航空航天大学 能源与动力工程学院 航空发动机气动热力重点实验室, 北京 100191 |
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| 摘 要： | 用时空守恒元和解元(CE/SE)法模拟有无障碍物情况下爆震管二维爆震波的形成和传播过程,分析爆震波的不同机理,研究在较低能量下,点火区温度、爆震管管径以及障碍物对爆燃-爆震转捩过程(DDT)的影响.控制方程采取无量纲形式,用拓展的隐式梯形法实现刚性源项积分.研究表明,点火能量与点火压力相关,在较低的点火能量下,可以通过提高点火温度、减小爆震管径及加入障碍物加强爆震过程,减小爆燃-爆震转捩过程DDT时间和距离.为研究爆震波点火和DDT过程提供了理论依据.
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| 关 键 词： | 时空守恒元和解元方法(CE/SE) 爆震波 点火 爆燃-爆震转捩过程(DDT) 障碍物 |
| 收稿时间： | 2008/5/23 0:00:00 |
| 修稿时间： | 2/16/2009 5:19:20 PM |
Numerical simulation of ignition in detonation tube with/without obstacles by CE/SE |
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| SUN Kong-qian,FAN Wei-jun and YANG Mao-lin.Numerical simulation of ignition in detonation tube with/without obstacles by CE/SE[J].Journal of Aerospace Power,2009,24(6):1242-1247. |
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| Authors: | SUN Kong-qian FAN Wei-jun and YANG Mao-lin |
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| Institution: | National Key Laboratory on Aero-Engines, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | A space-time conservation element and solution element method(CE/SE)was used to simulate the formation and propagation process of two-dimensional detonation with/without obstacles.The detonation mechanisms were analyzed.Influential factors to deflagration to detonation transition(DDT)were evaluated,including the ignition temperature,the tube diameter and the obstacles.Model equation was non-dimensionalized,and the implicit trapezoidal technique was established to handle stiff source term.Results show that t... |
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| Keywords: | space-time conservation element and solution element method(CE/SE) detonation wave ignition deflagration to detonation transition(DDT) obstacle |
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