| CE/SE法模拟爆震波点火及传播过程 |
| |
| 引用本文： | 孙孔倩,樊未军,杨茂林.CE/SE法模拟爆震波点火及传播过程[J].航空动力学报,2008,23(2):244-250. |
| |
| 作者姓名： | 孙孔倩 樊未军 杨茂林 |
| |
| 作者单位： | 北京航空航天大学,能源与动力学院,北京,100083 |
| |
| 摘 要： | 运用时空守恒元和解元(CE/SE)法模拟一维爆震波的形成及传播过程,分析产生爆震波的不同机理和DDT(爆燃-爆震转捩)过程的影响因素.采取激波点火和热点点火两种点火方式,分别对应SDT(激波-爆震转捩)和DDT过程,热点点火初始场采用线性温度分布和阶梯性温度分布,整个管道均为常压.用隐式梯形方法实现刚性源项积分.结果表明,SDT和DDT对应于不同的爆震波机理,并且DDT受点火区不同参数的影响,为研究爆震波点火和DDT过程提供了理论依据.
|
| 关 键 词： | 航空、航天推进系统 时空守恒元和解元方法(CE/SE) 爆震波 点火 爆燃-爆震转捩(DDT) 激波-爆震转捩(SDT) |
| 文章编号： | 1000-8055(2008)02-0244-07 |
| 修稿时间： | 2007年1月15日 |
Numerical simulation of detonation ignition and propagation progress by CE/SE method |
| |
| SUN Kong-qian,FAN Wei-jun,YANG Mao-lin.Numerical simulation of detonation ignition and propagation progress by CE/SE method[J].Journal of Aerospace Power,2008,23(2):244-250. |
| |
| Authors: | SUN Kong-qian FAN Wei-jun YANG Mao-lin |
| |
| Abstract: | A space-time conservation element and solution element method(CE/SE) was used to simulate the formation and propagation process of one-dimensional detonation;also the detonation mechanism and influential factors to DDT(deflagration to detonation transition) were analyzed.Shock ignition method and hotspots ignition method,corresponding to SDT(shock to detonation transition) and DDT respectively,were employed.For the hotspot ignition,the initial pressure was 1 atm and temperature was linear or step-wise.Implicit trapezoidal technique was employed to handle stiff source term.Results show that the shock ignition and hotspot ignition are of different detonation mechanisms and DDT is affected by parameter variations in ignition zone.The results will offer reference to study of detonation ignition and DDT process. |
| |
| Keywords: | aerospace propulsion system space-time conservation element and solution element method(CE/SE) detonation wave ignition deflagration to detonation transition(DDT) shock to detonation transition(SDT) |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
