Simulation research on the temperature distribution and smoke control in tunnel fires under a water curtain system
AbstractThis study determined the optimum number of water spray particles and the angle of the inner angle of the nozzle, simulated and studied the suppression effect of the water curtain system on roadway belt fires and toxic and harmful gases, and analysed the barrier effect of heat and smoke unde...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2023-12-01
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| Series: | Geomatics, Natural Hazards & Risk |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/19475705.2023.2225687 |
| _version_ | 1797389243922776064 |
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| author | Yinuo Chen Jinzhang Jia Guangbo Che Zhiheng Zhu Zhiyuan Shen |
| author_facet | Yinuo Chen Jinzhang Jia Guangbo Che Zhiheng Zhu Zhiyuan Shen |
| author_sort | Yinuo Chen |
| collection | DOAJ |
| description | AbstractThis study determined the optimum number of water spray particles and the angle of the inner angle of the nozzle, simulated and studied the suppression effect of the water curtain system on roadway belt fires and toxic and harmful gases, and analysed the barrier effect of heat and smoke under the water curtain system using the flow field. The results show that the number of water curtain rows has a suppressive effect on the temperature and that increasing the number of rows has a better barrier effect on the hot smoke downstream of the roadway. From the velocity and temperature fields, it is clear that there is significant upward movement between the water mists of the water curtain system, which is caused by the water mists colliding with each other on the roadway floor. These jets are entrained into the water mists and merge to form an area of upward movement that acts as a 'barrier’ to prevent the fumes from spreading downstream of the water curtain. When the water curtain system is activated, it increases the concentration of component gases in the downstream space of the roadway and rapidly restores visibility to meet the requirements for safe evacuation. |
| first_indexed | 2024-03-08T22:53:03Z |
| format | Article |
| id | doaj.art-efd3151e215c4c23bfcf68b31a276b2e |
| institution | Directory Open Access Journal |
| issn | 1947-5705 1947-5713 |
| language | English |
| last_indexed | 2024-03-08T22:53:03Z |
| publishDate | 2023-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Geomatics, Natural Hazards & Risk |
| spelling | doaj.art-efd3151e215c4c23bfcf68b31a276b2e2023-12-16T08:49:46ZengTaylor & Francis GroupGeomatics, Natural Hazards & Risk1947-57051947-57132023-12-0114110.1080/19475705.2023.2225687Simulation research on the temperature distribution and smoke control in tunnel fires under a water curtain systemYinuo Chen0Jinzhang Jia1Guangbo Che2Zhiheng Zhu3Zhiyuan Shen4School of Safety Science and Engineering, Liaoning Technical University, Fuxin, Liaoning, ChinaSchool of Safety Science and Engineering, Liaoning Technical University, Fuxin, Liaoning, ChinaSchool of Safety Science and Engineering, Liaoning Technical University, Fuxin, Liaoning, ChinaSchool of Safety Science and Engineering, Liaoning Technical University, Fuxin, Liaoning, ChinaSchool of Safety Science and Engineering, Liaoning Technical University, Fuxin, Liaoning, ChinaAbstractThis study determined the optimum number of water spray particles and the angle of the inner angle of the nozzle, simulated and studied the suppression effect of the water curtain system on roadway belt fires and toxic and harmful gases, and analysed the barrier effect of heat and smoke under the water curtain system using the flow field. The results show that the number of water curtain rows has a suppressive effect on the temperature and that increasing the number of rows has a better barrier effect on the hot smoke downstream of the roadway. From the velocity and temperature fields, it is clear that there is significant upward movement between the water mists of the water curtain system, which is caused by the water mists colliding with each other on the roadway floor. These jets are entrained into the water mists and merge to form an area of upward movement that acts as a 'barrier’ to prevent the fumes from spreading downstream of the water curtain. When the water curtain system is activated, it increases the concentration of component gases in the downstream space of the roadway and rapidly restores visibility to meet the requirements for safe evacuation.https://www.tandfonline.com/doi/10.1080/19475705.2023.2225687Underground firewater curtain systemtemperature distributionsmoke controlFDS |
| spellingShingle | Yinuo Chen Jinzhang Jia Guangbo Che Zhiheng Zhu Zhiyuan Shen Simulation research on the temperature distribution and smoke control in tunnel fires under a water curtain system Geomatics, Natural Hazards & Risk Underground fire water curtain system temperature distribution smoke control FDS |
| title | Simulation research on the temperature distribution and smoke control in tunnel fires under a water curtain system |
| title_full | Simulation research on the temperature distribution and smoke control in tunnel fires under a water curtain system |
| title_fullStr | Simulation research on the temperature distribution and smoke control in tunnel fires under a water curtain system |
| title_full_unstemmed | Simulation research on the temperature distribution and smoke control in tunnel fires under a water curtain system |
| title_short | Simulation research on the temperature distribution and smoke control in tunnel fires under a water curtain system |
| title_sort | simulation research on the temperature distribution and smoke control in tunnel fires under a water curtain system |
| topic | Underground fire water curtain system temperature distribution smoke control FDS |
| url | https://www.tandfonline.com/doi/10.1080/19475705.2023.2225687 |
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