Conditions for shock wave induced flame instability and detonation

Zhu Yuejin; Yu Lei; Zhang Penggang; Pan Zhenhua; Pan Jianfeng; Dong Gang

doi:10.11883/1001-1455(2017)04-0741-07

Volume 37 Issue 4

May 2017

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Zhu Yuejin, Yu Lei, Zhang Penggang, Pan Zhenhua, Pan Jianfeng, Dong Gang. Conditions for shock wave induced flame instability and detonation[J]. Explosion And Shock Waves, 2017, 37(4): 741-747. doi: 10.11883/1001-1455(2017)04-0741-07

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Zhu Yuejin, Yu Lei, Zhang Penggang, Pan Zhenhua, Pan Jianfeng, Dong Gang. Conditions for shock wave induced flame instability and detonation[J]. Explosion And Shock Waves, 2017, 37(4): 741-747. doi: 10.11883/1001-1455(2017)04-0741-07

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Conditions for shock wave induced flame instability and detonation

doi: 10.11883/1001-1455(2017)04-0741-07

1.
School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
2.
Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China

Received Date: 2015-12-23
Rev Recd Date: 2016-05-03
Publish Date: 2017-07-25

Abstract

Abstract

A computational study of the interaction between shock waves and a spherical flame was carried out using the ninth-order WENO and the tenth-order central difference schemes, and the influence of shock intensity and flame size on the interaction process was investigated. It can be found from the results of our study that the increase of the shock intensity and the flame size can both induce detonation in the flow field, but the influence of the shock intensity is relatively stronger. Further, the detonation induced by shock wave can lead to quick flame expansion and increase its heat release rate, thereby affecting the combustion characteristics. Besides, the detonation wave will quickly burn out the combustible gas, merge the previously existing reflected shock waves in the propagation process, and form local high pressure zones, which can significantly alter the flow field structure.
- shock wave,
- flame,
- detonation,
- flow field structure

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References(18)

References

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