Explosion of gasoline/air mixture ignited by pilot flame in semi-confined space

OU Yihong; LI Run; YUAN Guangqiang; ZHOU Jianzhong; WANG Bo; LI Yangchao

doi:10.11883/bzycj-2017-0117

Volume 38 Issue 2

Jan. 2018

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OU Yihong, LI Run, YUAN Guangqiang, ZHOU Jianzhong, WANG Bo, LI Yangchao. Explosion of gasoline/air mixture ignited by pilot flame in semi-confined space[J]. Explosion And Shock Waves, 2018, 38(2): 455-464. doi: 10.11883/bzycj-2017-0117

Citation:

OU Yihong, LI Run, YUAN Guangqiang, ZHOU Jianzhong, WANG Bo, LI Yangchao. Explosion of gasoline/air mixture ignited by pilot flame in semi-confined space[J]. Explosion And Shock Waves, 2018, 38(2): 455-464. doi: 10.11883/bzycj-2017-0117

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Explosion of gasoline/air mixture ignited by pilot flame in semi-confined space

doi: 10.11883/bzycj-2017-0117

1.
Department of Oil, Army Logistics University of PLA, Chongqing 401311, China
2.
No.72489 Troop of Army, Yantai 265301, Shandong, China

Received Date: 2017-01-13
Rev Recd Date: 2017-05-08
Publish Date: 2018-03-25

Abstract

Abstract

A semi-confined vessel was built to study the explosion of the gasoline/air mixture ignited by a pilot flame. The flame propagation at different gasoline/air volume fractions were characterized through the flame images from a high-speed camera. The pressures development at different gasoline/air volume fractions were characterized according to the pressure data acquired by a high-frequency pressure sensor. The results showed that the gasoline/air volume fraction had a significant influence on the flame's species, propagation velocity, pressure and pressure rise rate. The flame exhibited an obvious zoning phenomenon, was observed to divide into a flame kernel and a flame front. The speed of the vertical flame front was faster than that of the horizontal flame front. The pressure development process went through four stages, and produced a phenomenon of two pressure peaks. A strong coupling effect was formed between the flame and the pressure wave in the process of the gasoline/air explosion
- semi-confined space,
- pilot flame,
- flame propagation characteristics,
- pressure development characteristics

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References(22)

References

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