Research on the hazards of gas leakage and explosion in a full-scale residential building
The gas explosion in residential building has always been a highly concerned problem. Explosions in homogeneous mixtures have been extensively studied. However, mixtures are often inhomogeneous in the practical scenarios due to the differences in the densities of methane and air. In order to investi...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2025-01-01
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| Series: | Defence Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914724001569 |
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| author | Chengjun Yue Li Chen Zhan Li Bin Feng Ruizhi Xu |
| author_facet | Chengjun Yue Li Chen Zhan Li Bin Feng Ruizhi Xu |
| author_sort | Chengjun Yue |
| collection | DOAJ |
| description | The gas explosion in residential building has always been a highly concerned problem. Explosions in homogeneous mixtures have been extensively studied. However, mixtures are often inhomogeneous in the practical scenarios due to the differences in the densities of methane and air. In order to investigate the effects of gas explosions in inhomogeneous mixtures, experimental studies involving gas leakage and explosion are conducted in a full-scale residential building to reproduce the process of gas explosion. By fitting the dimensionless buoyancy as a function of dimensionless height and dimensionless time, a distribution model of gas in large-scale spaces is established, and the mechanism of inhomogeneous distribution of methane is also be revealed. Furthermore, the stratified reconstruction method (SRM) is introduced for efficiently setting up inhomogeneous concentration fields in FLACS. The simulation results highlight that for the internal overpressure, the distribution of methane has no effect on the first overpressure peak (ΔP1), while it significantly influences the subsequent overpressure peak (ΔP2), and the maximum difference between the overpressure of homogeneous and inhomogeneous distribution is 174.3%. Moreover, the initial concentration distribution also has a certain impact on the external overpressure. |
| format | Article |
| id | doaj-art-1ebd1b6d06e54b9fa5c0dc419932c305 |
| institution | Kabale University |
| issn | 2214-9147 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj-art-1ebd1b6d06e54b9fa5c0dc419932c3052025-01-23T05:26:46ZengKeAi Communications Co., Ltd.Defence Technology2214-91472025-01-0143168181Research on the hazards of gas leakage and explosion in a full-scale residential buildingChengjun Yue0Li Chen1Zhan Li2Bin Feng3Ruizhi Xu4Engineering Research Center of Safety and Protection of Explosion & Impact of Ministry of Education, Southeast University, Nanjing 211189, ChinaCorresponding author.; Engineering Research Center of Safety and Protection of Explosion & Impact of Ministry of Education, Southeast University, Nanjing 211189, ChinaEngineering Research Center of Safety and Protection of Explosion & Impact of Ministry of Education, Southeast University, Nanjing 211189, ChinaEngineering Research Center of Safety and Protection of Explosion & Impact of Ministry of Education, Southeast University, Nanjing 211189, ChinaEngineering Research Center of Safety and Protection of Explosion & Impact of Ministry of Education, Southeast University, Nanjing 211189, ChinaThe gas explosion in residential building has always been a highly concerned problem. Explosions in homogeneous mixtures have been extensively studied. However, mixtures are often inhomogeneous in the practical scenarios due to the differences in the densities of methane and air. In order to investigate the effects of gas explosions in inhomogeneous mixtures, experimental studies involving gas leakage and explosion are conducted in a full-scale residential building to reproduce the process of gas explosion. By fitting the dimensionless buoyancy as a function of dimensionless height and dimensionless time, a distribution model of gas in large-scale spaces is established, and the mechanism of inhomogeneous distribution of methane is also be revealed. Furthermore, the stratified reconstruction method (SRM) is introduced for efficiently setting up inhomogeneous concentration fields in FLACS. The simulation results highlight that for the internal overpressure, the distribution of methane has no effect on the first overpressure peak (ΔP1), while it significantly influences the subsequent overpressure peak (ΔP2), and the maximum difference between the overpressure of homogeneous and inhomogeneous distribution is 174.3%. Moreover, the initial concentration distribution also has a certain impact on the external overpressure.http://www.sciencedirect.com/science/article/pii/S2214914724001569Methane distributionInhomogeneous mixtureGradient layerGas explosionExplosive simulation |
| spellingShingle | Chengjun Yue Li Chen Zhan Li Bin Feng Ruizhi Xu Research on the hazards of gas leakage and explosion in a full-scale residential building Defence Technology Methane distribution Inhomogeneous mixture Gradient layer Gas explosion Explosive simulation |
| title | Research on the hazards of gas leakage and explosion in a full-scale residential building |
| title_full | Research on the hazards of gas leakage and explosion in a full-scale residential building |
| title_fullStr | Research on the hazards of gas leakage and explosion in a full-scale residential building |
| title_full_unstemmed | Research on the hazards of gas leakage and explosion in a full-scale residential building |
| title_short | Research on the hazards of gas leakage and explosion in a full-scale residential building |
| title_sort | research on the hazards of gas leakage and explosion in a full scale residential building |
| topic | Methane distribution Inhomogeneous mixture Gradient layer Gas explosion Explosive simulation |
| url | http://www.sciencedirect.com/science/article/pii/S2214914724001569 |
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