Experimental and numerical simulation of the attenuation effect of blast shock waves in tunnels at different altitudes
Traffic engineering such as tunnels in various altitudinal gradient zone are at risk of accidental explosion, which can damage personnel and equipment. Accurate prediction of the distribution pattern of explosive loads and shock wave propagation process in semi-enclosed structures at various altitud...
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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/S221491472400165X |
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| _version_ | 1832590987785928704 |
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| author | Changjiang Liu Hujun Li Zhen Wang Yong He Guokai Zhang Mingyang Wang |
| author_facet | Changjiang Liu Hujun Li Zhen Wang Yong He Guokai Zhang Mingyang Wang |
| author_sort | Changjiang Liu |
| collection | DOAJ |
| description | Traffic engineering such as tunnels in various altitudinal gradient zone are at risk of accidental explosion, which can damage personnel and equipment. Accurate prediction of the distribution pattern of explosive loads and shock wave propagation process in semi-enclosed structures at various altitude environment is key research focus in the fields of explosion shock and fluid dynamics. The effect of altitude on the propagation of shock waves in tunnels was investigated by conducting explosion test and numerical simulation. Based on the experimental and numerical simulation results, a prediction model for the attenuation of the peak overpressure of tunnel shock waves at different altitudes was established. The results showed that the peak overpressure decreased at the same measurement points in the tunnel entrance under the high altitude condition. In contrast, an increase in altitude accelerated the propagation speed of the shock wave in the tunnel. The average error between the peak shock wave overpressure obtained using the overpressure prediction formula and the measured test data was less than 15%, the average error between the propagation velocity of shock waves predicted values and the test data is less than 10%. The method can effectively predict the overpressure attenuation of blast wave in tunnel at various altitudes. |
| format | Article |
| id | doaj-art-c4439634a785485eaa8cb472ee5a6818 |
| 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-c4439634a785485eaa8cb472ee5a68182025-01-23T05:26:47ZengKeAi Communications Co., Ltd.Defence Technology2214-91472025-01-0143120141Experimental and numerical simulation of the attenuation effect of blast shock waves in tunnels at different altitudesChangjiang Liu0Hujun Li1Zhen Wang2Yong He3Guokai Zhang4Mingyang Wang5School 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, China; Corresponding author.School 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, China; State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, People's Liberation Army Engineering University, Nanjing 210014, ChinaTraffic engineering such as tunnels in various altitudinal gradient zone are at risk of accidental explosion, which can damage personnel and equipment. Accurate prediction of the distribution pattern of explosive loads and shock wave propagation process in semi-enclosed structures at various altitude environment is key research focus in the fields of explosion shock and fluid dynamics. The effect of altitude on the propagation of shock waves in tunnels was investigated by conducting explosion test and numerical simulation. Based on the experimental and numerical simulation results, a prediction model for the attenuation of the peak overpressure of tunnel shock waves at different altitudes was established. The results showed that the peak overpressure decreased at the same measurement points in the tunnel entrance under the high altitude condition. In contrast, an increase in altitude accelerated the propagation speed of the shock wave in the tunnel. The average error between the peak shock wave overpressure obtained using the overpressure prediction formula and the measured test data was less than 15%, the average error between the propagation velocity of shock waves predicted values and the test data is less than 10%. The method can effectively predict the overpressure attenuation of blast wave in tunnel at various altitudes.http://www.sciencedirect.com/science/article/pii/S221491472400165XShock wave propagationTunnelAltitude effectPeak overpressureShock waves velocityEngineering safety |
| spellingShingle | Changjiang Liu Hujun Li Zhen Wang Yong He Guokai Zhang Mingyang Wang Experimental and numerical simulation of the attenuation effect of blast shock waves in tunnels at different altitudes Defence Technology Shock wave propagation Tunnel Altitude effect Peak overpressure Shock waves velocity Engineering safety |
| title | Experimental and numerical simulation of the attenuation effect of blast shock waves in tunnels at different altitudes |
| title_full | Experimental and numerical simulation of the attenuation effect of blast shock waves in tunnels at different altitudes |
| title_fullStr | Experimental and numerical simulation of the attenuation effect of blast shock waves in tunnels at different altitudes |
| title_full_unstemmed | Experimental and numerical simulation of the attenuation effect of blast shock waves in tunnels at different altitudes |
| title_short | Experimental and numerical simulation of the attenuation effect of blast shock waves in tunnels at different altitudes |
| title_sort | experimental and numerical simulation of the attenuation effect of blast shock waves in tunnels at different altitudes |
| topic | Shock wave propagation Tunnel Altitude effect Peak overpressure Shock waves velocity Engineering safety |
| url | http://www.sciencedirect.com/science/article/pii/S221491472400165X |
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