Effects of double-jet positions on detonation initiation characteristics
Effects of double-jet positions on detonation initiation characteristics
复制标题
双射流位置对起爆特性的影响
DOI：
10.1016/j.ast.2019.105609
复制
发表时间：
2020-02
影响因子：
5.6
通讯作者：
Wang Yafei
中科院分区：
文献类型：
--
作者：
Wang Zhiwu;Pan Zhigang;Huang Jingjing;Wei Lisi;Wang Yaqi;Wang Yafei
为了有效地引发爆轰波，提出了双射流点火的方法，并在爆轰室内对H2/Air混合气体进行了点火实验。采用基于H2/Air详细化学反应动力学机理的数值模拟方法，研究了两股射流排列位置对爆轰起爆的影响。计算结果和实验结果验证了数值模拟的可靠性。模拟结果表明，第一股射流到爆轰室左端的距离（L1）和两股射流之间的距离（L2）对爆轰起爆过程和反射激波的分布有显著影响。爆轰波与壁面反射形成的反射波有助于火焰的传播和平面爆轰波的产生。OH浓度曲线和温度曲线耦合。OH的生成和消耗是控制爆轰波和爆轰波后温度的主要因素之一。当L1大于10 mm时，爆轰波的传播速度随L1的增大而减小。此外，当L1和L2均等于10 mm时，爆轰波的速度最大。
In order to initiate the detonation waves efficiently, the ignition method of two jets was proposed and utilized to initiate the mixture of H2/Air in a detonation chamber. The numerical simulation based on H2/Air detailed chemical reaction kinetics mechanism was carried out to study the influence of the two jets arrangement positions on detonation initiation. The reliability of the numerical simulation was verified by the calculation results of CEA and the experimental results. The simulation results indicated that the distance from the first jet to left end of the detonation chamber (L1) and the distance between the two jets (L2) showed significant influence on the detonation initiation process and the distribution of the reflected shock wave. The reflected wave formed by the reflection between the detonation waves from the jet tubes and the wall contributed to the propagation of the flame and the generation of the plane detonation waves. The OH concentration curve and the temperature curve were coupled. The formation and the consumption of OH was one of the main factors which controlling the detonation waves and the temperature behind the detonation waves. WhenL1 was greater than 10 mm, the velocity of the detonation waves decreased asL1 increased. Furthermore, whenL1 andL2 both equaled to 10 mm, the velocity of the detonation wave was maximized.
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DOI：
10.1007/978-3-540-85168-4_37
发表时间：
2009
期刊：
--
影响因子：
--
作者：
K. Ishii;T. Akiyoshi;M. Gonda;M. Murayama
通讯作者：
K. Ishii;T. Akiyoshi;M. Gonda;M. Murayama
影响因子：
1.9
作者：
S. Frolov;V. Basevich;V. S. Aksenov;S. Polikhov
通讯作者：
S. Frolov;V. Basevich;V. S. Aksenov;S. Polikhov
DOI：
10.2514/6.2005-4211
发表时间：
2005-11
期刊：
--
影响因子：
--
作者：
Ilissa Brooke Schild
通讯作者：
Ilissa Brooke Schild
影响因子：
0.9
作者：
S. Frolov;V. Basevich;V. S. Aksenov;S. Polikhov
通讯作者：
S. Frolov;V. Basevich;V. S. Aksenov;S. Polikhov
DOI：
10.2514/6.2004-308
发表时间：
2004-01
期刊：
--
影响因子：
--
作者：
H. Shimada;Y. Kenmoku;Hiroyuki Sato;A. Hayashi
通讯作者：
H. Shimada;Y. Kenmoku;Hiroyuki Sato;A. Hayashi