A model of gaseous deflagration flame propagation outside the open end of a short duct

DU Yang; QI Sheng; LI Guoqing; WANG Shimao; LI Yangchao

doi:10.11883/bzycj-2017-0060

Volume 38 Issue 5

Jul. 2018

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Article Navigation > Explosion And Shock Waves > 2018 > 38(5): 1057-1063

DU Yang, QI Sheng, LI Guoqing, WANG Shimao, LI Yangchao. A model of gaseous deflagration flame propagation outside the open end of a short duct[J]. Explosion And Shock Waves, 2018, 38(5): 1057-1063. doi: 10.11883/bzycj-2017-0060

Citation:

DU Yang, QI Sheng, LI Guoqing, WANG Shimao, LI Yangchao. A model of gaseous deflagration flame propagation outside the open end of a short duct[J]. Explosion And Shock Waves, 2018, 38(5): 1057-1063. doi: 10.11883/bzycj-2017-0060

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A model of gaseous deflagration flame propagation outside the open end of a short duct

doi: 10.11883/bzycj-2017-0060

DU Yang^{1, 2},
QI Sheng^{1, 2
,
,},
LI Guoqing^{1, 2},
WANG Shimao^{1, 2},
LI Yangchao^{1, 2}

1.
Department of Oil, Army Logistics University of PLA, Chongqing 401331, China
2.
Chongqing Key Laboratory of Fire and Explosion Safety, Army Logistics University of PLA, Chongqing 401331, China

Received Date: 2017-02-22
Rev Recd Date: 2017-05-17
Publish Date: 2018-09-25

Abstract

Abstract

Aiming at the flame propagation problem of gas deflagration in a short tube with one end closed and the other end open, by referring to the flame propagation model proposed by Clanet, et al and Bychkov, et al, and under the condition of adiabatic and incompressible assumption, a mathematical model of flammable gas distribution and flame front propagation was obtained. By using gasoline vapor as experimental working substance, deflagration experiment was carried out based on a fully transparent experimental pipeline. The proposed model was validated by high-speed photography and schlieren images. Results show that under the condition of length-diameter ratios 4:1 to 10:1, this model can predict accurately the flammable gas interface position and flame front position in the flow field outside the open end. Above results extend the original theory to outside field calculation, and have certain application value in flammable gas explosion protection and safety design.
- gasoline vapor,
- deflagration,
- flame front,
- duct with an open end

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References(15)

References

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