The Study on the Shock Wave Propagation Rule of a Gas Explosion in a Gas Compartment
[3];
[4];
- Shaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi’an 710123, China, Post-Doctoral Station of Civil Engineering, School of Civil Engineering, Tianjin University, Tianjin 300072, China, College of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan 063210, China
- Shaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi’an 710123, China
- Czestochowa University of Technology, 69 Dąbrowskiego St., Czestochowa 42-201, Poland
- School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
- College of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan 063210, China
Combined with the k-ε turbulence model of general application, a refined finite element model of a utility tunnel’s gas compartment filled with the methane/air mixture is developed. A series of analyses are made by using the powerful industry-leading computational fluid dynamics (CFD) software flame acceleration simulator (FLACS) to study the shock wave propagation rule in the gas compartment. The longitudinal and transversal distribution laws of the explosion shock wave are gained taking into consideration the spatial characteristics of the gas compartment. The influences of a few parameters, such as initial conditions and section size of the gas compartment, on the shock wave propagation rule are further discussed. The basic procedure for predicting the peak pressure of the blast wave is provided by considering the initial conditions and the gas compartment, and the corresponding injury effect of the explosion wave on the living beings is assessed. The investigation demonstrates that the peak pressure by the coupled effect between the initial conditions is significantly influenced, especially at the upper and lower gas explosion limits. The peak pressure increases gradually as the width or height increases, and both basically meet the linear relation. The proposed method can forecast the peak pressure of the explosion shock wave in the gas compartment accurately. According to the peak pressure longitudinal and transversal distributions of the blast wave, the peak pressure is far greater than the killing pressure threshold in the underground and closed space; consequently, it is not safe for the living beings in the gas compartment.
- Sponsoring Organization:
- USDOE Office of Electricity (OE), Advanced Grid Research & Development. Power Systems Engineering Research
- OSTI ID:
- 1838554
- Journal Information:
- Shock and Vibration, Journal Name: Shock and Vibration Vol. 2022; ISSN 1070-9622
- Publisher:
- Hindawi Publishing CorporationCopyright Statement
- Country of Publication:
- Egypt
- Language:
- English
Similar Records
Simulation of rock blasting with the SHALE code
Dynamics of explosions; International Colloquium on Dynamics of Explosions and Reactive Systems, 10th, Berkeley, CA, Aug. 4-9, 1985, Technical Papers. Volume 106