Experimental and numerical study on attenuation of shock waves in ventilation pipes
With different structural forms of ventilation pipes have various attenuation effects on incident shock waves while meeting ventilation requirements. The attenuation mechanism and the propagation law of shock waves in ventilation pipes of different structures are investigated by experiments and nume...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2025-04-01
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| Series: | Defence Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914724002800 |
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| author | Wenjun Yu Shuxin Deng Shengyun Chen Bingbing Yu Dongyan Jin Zhangjun Wu Yaguang Sui Huajie Wu |
| author_facet | Wenjun Yu Shuxin Deng Shengyun Chen Bingbing Yu Dongyan Jin Zhangjun Wu Yaguang Sui Huajie Wu |
| author_sort | Wenjun Yu |
| collection | DOAJ |
| description | With different structural forms of ventilation pipes have various attenuation effects on incident shock waves while meeting ventilation requirements. The attenuation mechanism and the propagation law of shock waves in ventilation pipes of different structures are investigated by experiments and numerical simulations. Furthermore, for the same structure, the effects of peak pressure and positive pressure time on the attenuation rate are discussed. It is found that the attenuation rate increases with the incident shock wave pressure, and the shock wave attenuation rate tends to reach its limiting value k for the same structure and reasonably short positive pressure time. Under the same conditions, the attenuation rate is calculated using the pressure of the shock wave as follows: diffusion chamber pipe, branch pipe and self-consumption pipe; the attenuation rate per unit volume is calculated as follows: self-consumption pipe, branch pipe and diffusion chamber pipe. In addition, an easy method is provided to calculate the attenuation rate of the shock wave in single and multi-stage ventilation pipes. Corresponding parameters are provided for various structures, and the margin of error between the formulae and experimental results is within 10%, which is significant for engineering applications. |
| format | Article |
| id | doaj-art-87cfb864a8014438839c77266ca5d58d |
| institution | OA Journals |
| issn | 2214-9147 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj-art-87cfb864a8014438839c77266ca5d58d2025-08-20T02:26:27ZengKeAi Communications Co., Ltd.Defence Technology2214-91472025-04-014615616810.1016/j.dt.2024.12.006Experimental and numerical study on attenuation of shock waves in ventilation pipesWenjun Yu0Shuxin Deng1Shengyun Chen2Bingbing Yu3Dongyan Jin4Zhangjun Wu5Yaguang Sui6Huajie Wu7School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; Corresponding author.Academy of Military Sciences National Defense Engineering Research Institute, Beijing 100036, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaNorthwest Institute of Nuclear Technology, Xi'an 710024, ChinaAcademy of Military Sciences National Defense Engineering Research Institute, Beijing 100036, ChinaWith different structural forms of ventilation pipes have various attenuation effects on incident shock waves while meeting ventilation requirements. The attenuation mechanism and the propagation law of shock waves in ventilation pipes of different structures are investigated by experiments and numerical simulations. Furthermore, for the same structure, the effects of peak pressure and positive pressure time on the attenuation rate are discussed. It is found that the attenuation rate increases with the incident shock wave pressure, and the shock wave attenuation rate tends to reach its limiting value k for the same structure and reasonably short positive pressure time. Under the same conditions, the attenuation rate is calculated using the pressure of the shock wave as follows: diffusion chamber pipe, branch pipe and self-consumption pipe; the attenuation rate per unit volume is calculated as follows: self-consumption pipe, branch pipe and diffusion chamber pipe. In addition, an easy method is provided to calculate the attenuation rate of the shock wave in single and multi-stage ventilation pipes. Corresponding parameters are provided for various structures, and the margin of error between the formulae and experimental results is within 10%, which is significant for engineering applications.http://www.sciencedirect.com/science/article/pii/S2214914724002800Hock wavesVentilation pipesNumerical modellingExplosion mechanics |
| spellingShingle | Wenjun Yu Shuxin Deng Shengyun Chen Bingbing Yu Dongyan Jin Zhangjun Wu Yaguang Sui Huajie Wu Experimental and numerical study on attenuation of shock waves in ventilation pipes Defence Technology Hock waves Ventilation pipes Numerical modelling Explosion mechanics |
| title | Experimental and numerical study on attenuation of shock waves in ventilation pipes |
| title_full | Experimental and numerical study on attenuation of shock waves in ventilation pipes |
| title_fullStr | Experimental and numerical study on attenuation of shock waves in ventilation pipes |
| title_full_unstemmed | Experimental and numerical study on attenuation of shock waves in ventilation pipes |
| title_short | Experimental and numerical study on attenuation of shock waves in ventilation pipes |
| title_sort | experimental and numerical study on attenuation of shock waves in ventilation pipes |
| topic | Hock waves Ventilation pipes Numerical modelling Explosion mechanics |
| url | http://www.sciencedirect.com/science/article/pii/S2214914724002800 |
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