Flame propagation velocities of cornstarch dust explosion based on RGB color model

ZHANG Hongming; CHEN Xianfeng; ZHANG Ying; NIU Yi; DAI Huaming; HUANG Chuyuan

doi:10.11883/bzycj-2016-0278

Volume 38 Issue 1

Nov. 2017

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Article Navigation > Explosion And Shock Waves > 2018 > 38(1): 133-139

ZHANG Hongming, CHEN Xianfeng, ZHANG Ying, NIU Yi, DAI Huaming, HUANG Chuyuan. Flame propagation velocities of cornstarch dust explosion based on RGB color model[J]. Explosion And Shock Waves, 2018, 38(1): 133-139. doi: 10.11883/bzycj-2016-0278

Citation:

ZHANG Hongming, CHEN Xianfeng, ZHANG Ying, NIU Yi, DAI Huaming, HUANG Chuyuan. Flame propagation velocities of cornstarch dust explosion based on RGB color model[J]. Explosion And Shock Waves, 2018, 38(1): 133-139. doi: 10.11883/bzycj-2016-0278

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Flame propagation velocities of cornstarch dust explosion based on RGB color model

doi: 10.11883/bzycj-2016-0278

School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China

Received Date: 2016-09-12
Rev Recd Date: 2016-12-15
Publish Date: 2018-01-25

Abstract

Abstract

In order to study the flame propagation process of cornstarch dust explosion, a series of experiments with different dust concentrations were conducted in a small-scale experimental platform. A computational method of the propagation velocity of cornstarch dust explosion flame was established based on the RGB color model. The flame front could be detected by flame recognition and reconstruction and the propagation velocities of dust explosion flame with different mass concentrations were calculated. The results shows that this method can be used to calculate the propagation velocity of the cornstarch dust explosion flame quickly and accurately. The determination of the flame pixel range is the key factor of the flame speed calculation. The flame propagation process in the duct is influenced by the dust concentration. The maximum flame propagation velocities increase firstly and then decrease with the increasing concentration of cornstarch dust cloud. However, the times of the maximum flame propagation velocities have the opposite rules. The maximum flame propagation velocity is up to 7.03 m/s, when the mass concentration of cornstarch dust cloud is 0.63 kg/m³.
- dust explosion,
- flame propagation velocity,
- flame images,
- RGB color model

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References(14)

References

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