THERMAL SCIENCE

International Scientific Journal

Shilin Lei

,

Yulong Duan

,

Jun Long

,

Kaijun Xiang

,

Liwen Liu

,

Zehuan Li

,

Ziyang Wen

,

Lulu Zheng

STUDY ON THE EFFECTS OF ELASTIC MODULUS OF CONSTRUCTIONS ON HEAT AND MASS TRANSFER OF GAS EXPLOSION

ABSTRACT
The factor of combustion and explosion remains one of the main constraints on coal mining and management. To clarify the impact of structural properties on the consequences of gas explosion disasters during coal mining, this article conducts a study on the impact of the elastic modulus of structures on gas explosion disasters. The research results indicate that in the case where structures with high elastic modulus must exist, the elastic modulus of the structure has minimal impact on the structure during the early stage of flame development. The area of flame front and the degree of deflagration also decrease with the increase of elastic modulus, but the disturbance degree of air-flow and flame in the pipe increases with the increase of elastic modulus. The peak flame velocity at elastic modulus of 0.7 GPa and 2.8 GPa increased by 3.56% and 7.47% compared to elastic modulus of 0.18 GPa, respectively. The upstream overpressure peak increased by 24.63% and 42.52%. The downstream overpressure peak increased by 11.19% and 20.62%. The peak values of flame velocity and overpressure increase with the increase of elastic modulus, while the explosion intensity and pressure rise rate increase with the increase of elastic modulus. The explosion intensity index at elastic modulus 2.8 GPa is approximately 1.45 times that at elastic modulus 0.18 GPa. Therefore, it is necessary to choose structures with smaller elastic modulus as much as possible to achieve the best fire and explosion suppression effect.
KEYWORDS
Coal mine roadway, Structures, Elastic modulus, Explosion disaster, Explosion proof facilities
PAPER SUBMITTED: 2023-08-05
PAPER REVISED: 2023-10-07
PAPER ACCEPTED: 2023-10-07
PUBLISHED ONLINE: 2023-12-10
DOI REFERENCE: https://doi.org/10.2298/TSCI230805263L
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2024, VOLUME 28, ISSUE Issue 3, PAGES [2693 - 2702]
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Study on the effects of elastic modulus of constructions on heat and mass transfer of gas explosion

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence