Dynamic and evolution of the CH4 explosion with different vent tube diameters
CH4 explosion in a confined space will cause serious harm, and the vent tube can realize the directional venting of the explosion. Through the explosion experiment and numerical simulation of 8 vol% CH4, the impact of tube diameter on CH4 explosion venting was studied. The findings show that the tub...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25004769 |
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| author | Wen Zhou Suyue Li Shuang Geng Yue Zhao Mengyi Yuan Wenxin An Wenhao Xing Xueqiang Shi Yang Zhang Weiguo Cao |
| author_facet | Wen Zhou Suyue Li Shuang Geng Yue Zhao Mengyi Yuan Wenxin An Wenhao Xing Xueqiang Shi Yang Zhang Weiguo Cao |
| author_sort | Wen Zhou |
| collection | DOAJ |
| description | CH4 explosion in a confined space will cause serious harm, and the vent tube can realize the directional venting of the explosion. Through the explosion experiment and numerical simulation of 8 vol% CH4, the impact of tube diameter on CH4 explosion venting was studied. The findings show that the tube diameter affected the pressure accumulation and pressure venting efficiency in the tube, and the maximum explosion pressure decreased as the tube diameter increased. The diameter of the tube affected the velocity and pressure of the venting airflow. When the tube diameter was 70 mm, the maximum explosion pressure decreased by 41.67 %. When the tube diameter was 30 mm, bright and clear Mach disks structure appeared, while the Mach disk structure did not appear when the tube diameter was 70 mm, the maximum flame length and velocity were achieved, 805 mm and 359.55 m/s, respectively. Through numerical simulation, the explosion of CH4 was reproduced under both closed and venting conditions, and the temperature field resulting from the CH4 explosion was constructed. This study can provide data reference for optimizing the safety design of fuel power plants and industrial heating equipment and reduce the risk of explosion. |
| format | Article |
| id | doaj-art-7bae5e2932ec4e24a0a007e5ab7358a1 |
| institution | DOAJ |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-7bae5e2932ec4e24a0a007e5ab7358a12025-08-20T03:20:22ZengElsevierCase Studies in Thermal Engineering2214-157X2025-07-017110621610.1016/j.csite.2025.106216Dynamic and evolution of the CH4 explosion with different vent tube diametersWen Zhou0Suyue Li1Shuang Geng2Yue Zhao3Mengyi Yuan4Wenxin An5Wenhao Xing6Xueqiang Shi7Yang Zhang8Weiguo Cao9Department of Environmental and Safety Engineering, Taiyuan Institute of Technology, Taiyuan, 030008, Shanxi, PR China; Corresponding author.School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, PR ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, PR ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, PR ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, PR ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, PR ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, PR ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, PR China; Corresponding author.Xi'an Modern Chemistry Research Institute, Xi'an, 710065, Shaanxi, PR China; Corresponding author.School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, Shanxi, PR ChinaCH4 explosion in a confined space will cause serious harm, and the vent tube can realize the directional venting of the explosion. Through the explosion experiment and numerical simulation of 8 vol% CH4, the impact of tube diameter on CH4 explosion venting was studied. The findings show that the tube diameter affected the pressure accumulation and pressure venting efficiency in the tube, and the maximum explosion pressure decreased as the tube diameter increased. The diameter of the tube affected the velocity and pressure of the venting airflow. When the tube diameter was 70 mm, the maximum explosion pressure decreased by 41.67 %. When the tube diameter was 30 mm, bright and clear Mach disks structure appeared, while the Mach disk structure did not appear when the tube diameter was 70 mm, the maximum flame length and velocity were achieved, 805 mm and 359.55 m/s, respectively. Through numerical simulation, the explosion of CH4 was reproduced under both closed and venting conditions, and the temperature field resulting from the CH4 explosion was constructed. This study can provide data reference for optimizing the safety design of fuel power plants and industrial heating equipment and reduce the risk of explosion.http://www.sciencedirect.com/science/article/pii/S2214157X25004769CH4 explosionExplosion characteristicsVent tube diameterNumerical simulationVenting flame |
| spellingShingle | Wen Zhou Suyue Li Shuang Geng Yue Zhao Mengyi Yuan Wenxin An Wenhao Xing Xueqiang Shi Yang Zhang Weiguo Cao Dynamic and evolution of the CH4 explosion with different vent tube diameters Case Studies in Thermal Engineering CH4 explosion Explosion characteristics Vent tube diameter Numerical simulation Venting flame |
| title | Dynamic and evolution of the CH4 explosion with different vent tube diameters |
| title_full | Dynamic and evolution of the CH4 explosion with different vent tube diameters |
| title_fullStr | Dynamic and evolution of the CH4 explosion with different vent tube diameters |
| title_full_unstemmed | Dynamic and evolution of the CH4 explosion with different vent tube diameters |
| title_short | Dynamic and evolution of the CH4 explosion with different vent tube diameters |
| title_sort | dynamic and evolution of the ch4 explosion with different vent tube diameters |
| topic | CH4 explosion Explosion characteristics Vent tube diameter Numerical simulation Venting flame |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25004769 |
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