The research into the propagation law of the shock wave of a gas explosion inside a building
Based on the dissipation rate conservation equations of turbulent kinetic energy in the k-ε turbulence model, a complicated three-dimensional finite element model of a kitchen filled with gas mixture is developed by using the open source field operation and manipulation (OpenFOAM). Two representativ...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/4939014 |
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| _version_ | 1832566289594318848 |
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| author | Shu-Chao Lin You-Chun Xu Pei-Dong Yang Shan Gao Yi-Jun Zhou Jin Xu |
| author_facet | Shu-Chao Lin You-Chun Xu Pei-Dong Yang Shan Gao Yi-Jun Zhou Jin Xu |
| author_sort | Shu-Chao Lin |
| collection | DOAJ |
| description | Based on the dissipation rate conservation equations of turbulent kinetic energy in the k-ε turbulence model, a complicated three-dimensional finite element model of a kitchen filled with gas mixture is developed by using the open source field operation and manipulation (OpenFOAM). Two representative kitchens were used to investigate the propagation law of the shock wave of a gas explosion inside a building by considering the key characteristics of the blast shock wave. The influence of some crucial parameters, such as initial conditions and kitchen parameters, on the properties of the blast shock wave is investigated. The basic steps to predict the peak pressure of the blast shock wave are given in consideration of the initial condition and the kitchen whilst the injury effect of the blast shock wave on the humans and animals is evaluated. The research results indicate that the pressure time history and the peak pressure space distribution are greatly influenced by the kitchen design layout. The coupled interaction between the initial temperature and gas volume concentration, especially at the upper and lower explosion limits of the gas, significantly affects the peak pressure. The peak pressure varies significantly with the opening and the buffer; however, it has little relation with the width, length, and height of the kitchen. The proposed method can accurately and effectively predict the peak pressure of the blast shock wave inside buildings. In terms of the peak pressure space distribution of the explosion shock wave, the peak pressure is much higher than the threshold of the killing pressure, which is unsafe for the humans and animals in the building. |
| format | Article |
| id | doaj-art-9803bc2caf214bec9160716bc99d817e |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-9803bc2caf214bec9160716bc99d817e2025-02-03T01:04:34ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/49390144939014The research into the propagation law of the shock wave of a gas explosion inside a buildingShu-Chao Lin0You-Chun Xu1Pei-Dong Yang2Shan Gao3Yi-Jun Zhou4Jin Xu5Shaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi'an 710123, ChinaShaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi'an 710123, ChinaShaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi'an 710123, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin 150000, ChinaCollege of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan 063210, ChinaShaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi'an 710123, ChinaBased on the dissipation rate conservation equations of turbulent kinetic energy in the k-ε turbulence model, a complicated three-dimensional finite element model of a kitchen filled with gas mixture is developed by using the open source field operation and manipulation (OpenFOAM). Two representative kitchens were used to investigate the propagation law of the shock wave of a gas explosion inside a building by considering the key characteristics of the blast shock wave. The influence of some crucial parameters, such as initial conditions and kitchen parameters, on the properties of the blast shock wave is investigated. The basic steps to predict the peak pressure of the blast shock wave are given in consideration of the initial condition and the kitchen whilst the injury effect of the blast shock wave on the humans and animals is evaluated. The research results indicate that the pressure time history and the peak pressure space distribution are greatly influenced by the kitchen design layout. The coupled interaction between the initial temperature and gas volume concentration, especially at the upper and lower explosion limits of the gas, significantly affects the peak pressure. The peak pressure varies significantly with the opening and the buffer; however, it has little relation with the width, length, and height of the kitchen. The proposed method can accurately and effectively predict the peak pressure of the blast shock wave inside buildings. In terms of the peak pressure space distribution of the explosion shock wave, the peak pressure is much higher than the threshold of the killing pressure, which is unsafe for the humans and animals in the building.http://dx.doi.org/10.1155/2021/4939014 |
| spellingShingle | Shu-Chao Lin You-Chun Xu Pei-Dong Yang Shan Gao Yi-Jun Zhou Jin Xu The research into the propagation law of the shock wave of a gas explosion inside a building Shock and Vibration |
| title | The research into the propagation law of the shock wave of a gas explosion inside a building |
| title_full | The research into the propagation law of the shock wave of a gas explosion inside a building |
| title_fullStr | The research into the propagation law of the shock wave of a gas explosion inside a building |
| title_full_unstemmed | The research into the propagation law of the shock wave of a gas explosion inside a building |
| title_short | The research into the propagation law of the shock wave of a gas explosion inside a building |
| title_sort | research into the propagation law of the shock wave of a gas explosion inside a building |
| url | http://dx.doi.org/10.1155/2021/4939014 |
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