journal article Open Access Jan 13, 2021

Study on Inhibitory Effect of Cavity on Gas Explosion Propagation

Geofluids Vol. 2021 pp. 1-9 · Wiley
View at Publisher Save 10.1155/2021/6674425
Abstract
It is pointed out in the literature that the vacuum chamber has the effect of explosion suppression. The effect of explosion suppression depends on the volume of the vacuum chamber, while the vacuum degree has little effect on the performance of explosion suppression. Inspired by this, to explore a new method of gas explosion suppression, a rectangular steel cavity with a wall thickness of 10 mm, a length of 500 mm, a width of 800 mm, and a height of 200 mm was designed. The cavity was installed in a pipeline system to carry out experimental research and to investigate the law of attenuation of gas explosion flames and shock wave overpressure after passing through the cavity. The results show that the single cavity has the function of flame-out and wave attenuation, which attenuates the explosion flame and shock wave overpressure by 42.5% and 11%, respectively, and that the dual cavity further improves the performance of flame-out and wave attenuation, which attenuates flame and shock wave overpressure by 75.4% and 26.7%, respectively. On the basis of the experimental study, a numerical model was established, and a numerical simulation was carried out under the same conditions as the experimental study. The results show that the single cavity inhibits the propagation of the shock wave and attenuates the shock wave overpressure by 10.61%. The dual cavity further improves the suppression performance and attenuates the shock wave overpressure by 28.88%. Finally, by simulating the propagation process of the gas explosion shock wave and flame in the cavity, the mechanism of inhibiting gas explosion propagation by the cavity structure is analyzed.
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Metrics
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Citations
24
References
Details
Published
Jan 13, 2021
Vol/Issue
2021
Pages
1-9
License
View
Funding
National Natural Science Foundation of China Award: 19KZS203
Institute of Energy Award: 19KZS203
Cite This Article
Zhuo Yan, Shujie Yuan, Zhongqing Li, et al. (2021). Study on Inhibitory Effect of Cavity on Gas Explosion Propagation. Geofluids, 2021, 1-9. https://doi.org/10.1155/2021/6674425