Pub Date : 2019-10-01DOI: 10.1109/ICFSFPE48751.2019.9055819
Shaohua Zhang, Hui-ling Jiang, Linqiang He
This The fire of benzoyl peroxide (BPO) is different from that of common solid fuels, which is a process of self-reaction. At present, the storage of BPO is protected by spraying, but the effect of spraying is unknown. This paper combined the ARC data of BPO, FDS was used to simulate the storage condition of benzo peroxide protected by water spray. Based on the simulation results, the temperature rise of fire stacking under spray protection was analyzed by regression, and the temperature rise of stacking at different distances was obtained. It was found that distance has little effect on temperature rise and can greatly delay flashover under water spray protection.
{"title":"Simulation of Influence of Water Spray on Runaway Temperature Field of Benzo Peroxide Storage Heat","authors":"Shaohua Zhang, Hui-ling Jiang, Linqiang He","doi":"10.1109/ICFSFPE48751.2019.9055819","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055819","url":null,"abstract":"This The fire of benzoyl peroxide (BPO) is different from that of common solid fuels, which is a process of self-reaction. At present, the storage of BPO is protected by spraying, but the effect of spraying is unknown. This paper combined the ARC data of BPO, FDS was used to simulate the storage condition of benzo peroxide protected by water spray. Based on the simulation results, the temperature rise of fire stacking under spray protection was analyzed by regression, and the temperature rise of stacking at different distances was obtained. It was found that distance has little effect on temperature rise and can greatly delay flashover under water spray protection.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"3 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87264059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICFSFPE48751.2019.9055881
F. Jiang, Wanning Wang, Yilin Chen, D. Liang, Shanjun Mo
As lithium batteries become more and more widely used, the fire of lithium batteries is becoming more frequent. According to the investigation, most lithium battery fires are caused by overcharge. In order to research the failure and metallographic characteristics of lithium battery under different overcharge voltage. This paper simulates the process of overcharge battery fires by setting different charging voltages and using muffle furnace heating. The temperature changes and experimental phenomena of the battery during the experiment is recorded, and the positive electrode cap of the battery was subjected to metallographic analysis to compare the failure and metallographic characteristics of the lithium battery under different charging voltages. The results show that the explosion of lithium batteries is uncertain under overcharge. The higher the charging voltage, the higher the heating rate of the batteries, the larger the grain size of the positive electrode cap and the clearer the grain boundary. This study provides a way of thinking for the investigation of fire accidents of lithium battery, and lays a foundation for further research on the identification of fire traces of lithium battery.
{"title":"Failure and Microstructure Characteristics of Lithium Batteries under Different Overcharging Voltage Conditions","authors":"F. Jiang, Wanning Wang, Yilin Chen, D. Liang, Shanjun Mo","doi":"10.1109/ICFSFPE48751.2019.9055881","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055881","url":null,"abstract":"As lithium batteries become more and more widely used, the fire of lithium batteries is becoming more frequent. According to the investigation, most lithium battery fires are caused by overcharge. In order to research the failure and metallographic characteristics of lithium battery under different overcharge voltage. This paper simulates the process of overcharge battery fires by setting different charging voltages and using muffle furnace heating. The temperature changes and experimental phenomena of the battery during the experiment is recorded, and the positive electrode cap of the battery was subjected to metallographic analysis to compare the failure and metallographic characteristics of the lithium battery under different charging voltages. The results show that the explosion of lithium batteries is uncertain under overcharge. The higher the charging voltage, the higher the heating rate of the batteries, the larger the grain size of the positive electrode cap and the clearer the grain boundary. This study provides a way of thinking for the investigation of fire accidents of lithium battery, and lays a foundation for further research on the identification of fire traces of lithium battery.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"8 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89785129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICFSFPE48751.2019.9055843
Haoran Yin, Zheng Fang
In response to the evacuation and rescue of fires occurred in the Yangtze River-crossing highway-Metro integrated tunnel on Sanyang Road in Wuhan, the Pathfinder was used to simulate the evacuation of highway tunnels and subway tunnels. The variables in the simulation are: the distance between evacuation stairs in the road tunnel is 50 m, 75 m, 100 m; the width of the evacuation gate in the subway tunnel is 0.9 m and 1.4 m, and the evacuation gates interval is 100 m, 150 m. The research shows that: under the design of traffic conditions, the evacuation time of highway tunnels is mainly affected by the spacing of the slides. The larger the spacing, the longer the evacuation time. In the subway tunnel, the smaller the width of the evacuation gates, the larger the distance between the evacuation gates, the longer the time is; when the top exhaust fails, the interval of the evacuation door is 50 m, which meets the requirements; when the top exhaust is effective, the evacuation gate spacing is 50 m and 75 m, which basically meets the requirements. The simulation provides a reference for the evacuation of the new type of joint tunnel.
{"title":"Evacuation Simulation of the Yangtze River-crossing Highway-metro Integrated Tunnel on Sanyang Road in Wuhan","authors":"Haoran Yin, Zheng Fang","doi":"10.1109/ICFSFPE48751.2019.9055843","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055843","url":null,"abstract":"In response to the evacuation and rescue of fires occurred in the Yangtze River-crossing highway-Metro integrated tunnel on Sanyang Road in Wuhan, the Pathfinder was used to simulate the evacuation of highway tunnels and subway tunnels. The variables in the simulation are: the distance between evacuation stairs in the road tunnel is 50 m, 75 m, 100 m; the width of the evacuation gate in the subway tunnel is 0.9 m and 1.4 m, and the evacuation gates interval is 100 m, 150 m. The research shows that: under the design of traffic conditions, the evacuation time of highway tunnels is mainly affected by the spacing of the slides. The larger the spacing, the longer the evacuation time. In the subway tunnel, the smaller the width of the evacuation gates, the larger the distance between the evacuation gates, the longer the time is; when the top exhaust fails, the interval of the evacuation door is 50 m, which meets the requirements; when the top exhaust is effective, the evacuation gate spacing is 50 m and 75 m, which basically meets the requirements. The simulation provides a reference for the evacuation of the new type of joint tunnel.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"1 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73791785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICFSFPE48751.2019.9055790
Xiaosong Li, Jian Chen, Fei Chen, Longfei Chen
In this paper, the improved nozzle structure, which is a combination of 4 concave runners, 1.5 mm runner depth, 30 ° runner inclination angle and 0.6 mm nozzle aperture, is used to investigate the water mist flow flux distribution under different pressures and the influence of the fire source position offset on the oil pan fire extinguishing effect. The results show that: the mist flux in the mist field gradually decreases from the inside to the outside, and the change of working pressure has a little influence on mist flux, but the working pressure will change the distribution of mist flux. The fire extinguishing effect is still well within the fire source position offset of 25cm, and when the fire source position offset reaches to 50cm and 100 cm, it can control the main flame to a certain range but is unable to effectively extinguish the fire.
{"title":"Study on the Water Mist Flow Flux Distribution and Fire Extinguishing Effect Based on Improved Nozzle Structure","authors":"Xiaosong Li, Jian Chen, Fei Chen, Longfei Chen","doi":"10.1109/ICFSFPE48751.2019.9055790","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055790","url":null,"abstract":"In this paper, the improved nozzle structure, which is a combination of 4 concave runners, 1.5 mm runner depth, 30 ° runner inclination angle and 0.6 mm nozzle aperture, is used to investigate the water mist flow flux distribution under different pressures and the influence of the fire source position offset on the oil pan fire extinguishing effect. The results show that: the mist flux in the mist field gradually decreases from the inside to the outside, and the change of working pressure has a little influence on mist flux, but the working pressure will change the distribution of mist flux. The fire extinguishing effect is still well within the fire source position offset of 25cm, and when the fire source position offset reaches to 50cm and 100 cm, it can control the main flame to a certain range but is unable to effectively extinguish the fire.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"33 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81932079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In order to prevent flashover when the passengers are present in typical Light Rail Vehicles, and provide tenable conditions on the evacuation pathway. The vehicle should meet the requirements that the CFD simulation results are within the tenability requirements of temperature (≤ 49°C), carbon monoxide concentration (≤ 800ppm) and visibility (≤ 6m) in the areas of the saloon that allow passengers to evacuate the vehicle. The research identifies and evaluates the fire and evacuation scenarios for the vehicle, analyze whether a typical LRV vehicles meet the requirements of safe evacuation in the worst case.
{"title":"Fire and Evacuation Analysis Base on Light Rail Vehicles","authors":"Yantong Liu, Wanxiu Teng, Qiang Sun, Yong Sun, Shu Zhang, Junjie Shao","doi":"10.1109/ICFSFPE48751.2019.9055862","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055862","url":null,"abstract":"In order to prevent flashover when the passengers are present in typical Light Rail Vehicles, and provide tenable conditions on the evacuation pathway. The vehicle should meet the requirements that the CFD simulation results are within the tenability requirements of temperature (≤ 49°C), carbon monoxide concentration (≤ 800ppm) and visibility (≤ 6m) in the areas of the saloon that allow passengers to evacuate the vehicle. The research identifies and evaluates the fire and evacuation scenarios for the vehicle, analyze whether a typical LRV vehicles meet the requirements of safe evacuation in the worst case.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"77 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83388715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In order to study the fire characteristics and fire extinguishing methods of lithium-ion battery case in electric bus, fire test model has been built using hard case prismatic LiFePO4 cells. Based on this, fire extinguishing test of lithiumion battery case in electric bus is conducted using perfluorohexanone extinguishing agent. The test results show that the agent of perfluorohexanone could put out the flame of battery cell and it has a certain cooling effect on battery which plays a certain role in blocking thermal runaway prorogation. The research results are vital to the perfluorohexanone engineering application in electric bus and the special fire extinguishing system research for lithium-on batteries. All of these provide security for the further promotion of new energy technologies.
{"title":"Fire Extinguishing Test of Lithium-Ion Battery Case in Electric Bus","authors":"Dongxing Yu, Yi Li, Shaoyu Zhang, Hai-wei Dong, Guang Han, Xuelei Xian","doi":"10.1109/ICFSFPE48751.2019.9055837","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055837","url":null,"abstract":"In order to study the fire characteristics and fire extinguishing methods of lithium-ion battery case in electric bus, fire test model has been built using hard case prismatic LiFePO4 cells. Based on this, fire extinguishing test of lithiumion battery case in electric bus is conducted using perfluorohexanone extinguishing agent. The test results show that the agent of perfluorohexanone could put out the flame of battery cell and it has a certain cooling effect on battery which plays a certain role in blocking thermal runaway prorogation. The research results are vital to the perfluorohexanone engineering application in electric bus and the special fire extinguishing system research for lithium-on batteries. All of these provide security for the further promotion of new energy technologies.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"25 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81563323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICFSFPE48751.2019.9055863
Yu Jiang, Chunjie Zhai, Junhui Gong
An experimental apparatus consisting of a heating unit and a wind duct capable of flexibly adjusting radiation power and forced airflow velocity was used in this work to examine the heat transfer and thermal decomposition in condensed phase, mass diffusion of pyrolyzate in boundary layer in gas and the consequent ignition behaviors of PMMA (polymethyl methacrylate) in forced airflow condition. Constant heat flux (HF) was employed and spontaneous ignition was studied. Finite thick, 3, 6 and 10 mm, 5 cm squared samples and six sets of airflow velocities 0 to 1.2 m/s were selected in the tests. Surface temperature and ignition time under the designed conditions were collected and compared with corresponding numerical simulation results, performed by ANSYS fluid dynamics simulator, which consider thermal decomposition in solid and thermal insulation layer. The results shown that the ignition temperature of PMMA is positively correlated with increasing airflow velocity, indicating the critical temperature is not a reliable ignition criterion in these scenarios. The airflow velocity has little effect on surface temperature. For airflow velocities larger than 0.4 m/s, the ignition time increases significantly with the increase of airflow velocity and sample thickness. While for 0.4 m/s airflow velocity, the ignition temperature is lowered and the ignition time is shortened.
{"title":"Thermal Decomposition and Auto-ignition of Finite Thick PMMA in Forced Convective Airflow","authors":"Yu Jiang, Chunjie Zhai, Junhui Gong","doi":"10.1109/ICFSFPE48751.2019.9055863","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055863","url":null,"abstract":"An experimental apparatus consisting of a heating unit and a wind duct capable of flexibly adjusting radiation power and forced airflow velocity was used in this work to examine the heat transfer and thermal decomposition in condensed phase, mass diffusion of pyrolyzate in boundary layer in gas and the consequent ignition behaviors of PMMA (polymethyl methacrylate) in forced airflow condition. Constant heat flux (HF) was employed and spontaneous ignition was studied. Finite thick, 3, 6 and 10 mm, 5 cm squared samples and six sets of airflow velocities 0 to 1.2 m/s were selected in the tests. Surface temperature and ignition time under the designed conditions were collected and compared with corresponding numerical simulation results, performed by ANSYS fluid dynamics simulator, which consider thermal decomposition in solid and thermal insulation layer. The results shown that the ignition temperature of PMMA is positively correlated with increasing airflow velocity, indicating the critical temperature is not a reliable ignition criterion in these scenarios. The airflow velocity has little effect on surface temperature. For airflow velocities larger than 0.4 m/s, the ignition time increases significantly with the increase of airflow velocity and sample thickness. While for 0.4 m/s airflow velocity, the ignition temperature is lowered and the ignition time is shortened.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"55-56 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82725106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICFSFPE48751.2019.9055829
Meng Shi, Eric Wai Ming Lee, R. Cao, Yi Ma, Wei Xie
This study presents a novel impatience-based model on the route choice simulations. Two parameters: self-growth rate and propagation speed of impatience are introduced to calculate the dynamic impatience level. The target cell is determined by comprehensively considering distance, density around exits, and the impatience level. At each time step, pedestrians will move into the target cell in turn depending on the descending order of their impatience level. To test the feasibility of this model, we apply this model into the typical scenario (i.e., square room with two exits) and conduct the sensitivity analysis of two model parameters. The simulation results illustrate that this proposed model can successfully reproduce typical collective behaviour (i.e., clogging). Compared with the previous model in which only distance is considered, this model has two exits fully used and then improves evacuation efficiency. The parameter analysis results show that in this simulation scenario, self-growth speed is the dominated factor. With the increase of self-growth rate, evacuation time is shortened. In addition, scatter plots of evacuation time against maximum impatience level shows both no impatience and an excessive impatience level will lead to an increase in evacuation time. The comparison between impatience-determined model and Pathfinder illustrates the impatience-determined model leads to a smoother evacuation process, and this model is applicable in predicting the evacuation process with multiple exits.
{"title":"The Simulation of Route Choice Behaviour with an Emotion-determined Model","authors":"Meng Shi, Eric Wai Ming Lee, R. Cao, Yi Ma, Wei Xie","doi":"10.1109/ICFSFPE48751.2019.9055829","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055829","url":null,"abstract":"This study presents a novel impatience-based model on the route choice simulations. Two parameters: self-growth rate and propagation speed of impatience are introduced to calculate the dynamic impatience level. The target cell is determined by comprehensively considering distance, density around exits, and the impatience level. At each time step, pedestrians will move into the target cell in turn depending on the descending order of their impatience level. To test the feasibility of this model, we apply this model into the typical scenario (i.e., square room with two exits) and conduct the sensitivity analysis of two model parameters. The simulation results illustrate that this proposed model can successfully reproduce typical collective behaviour (i.e., clogging). Compared with the previous model in which only distance is considered, this model has two exits fully used and then improves evacuation efficiency. The parameter analysis results show that in this simulation scenario, self-growth speed is the dominated factor. With the increase of self-growth rate, evacuation time is shortened. In addition, scatter plots of evacuation time against maximum impatience level shows both no impatience and an excessive impatience level will lead to an increase in evacuation time. The comparison between impatience-determined model and Pathfinder illustrates the impatience-determined model leads to a smoother evacuation process, and this model is applicable in predicting the evacuation process with multiple exits.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"1 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89847726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICFSFPE48751.2019.9055815
Shouchong Zhao, Yanfeng Li, Lin Chang, Huiqiang Liu, Sinan Tian
Fire safety is a key issue for an underground car park with flat and restricted space. Based on the experimental results, effect of smoke exhaust assisted by jet fans has been investigated in the underground car park by numerical simulation. The influence of jet fan layout and outlet velocity on smoke temperature and visibility is discussed. Results show that the use of jet fans to assist smoke exhaust can effectively control smoke diffusion in an underground car park. The arrangement of twenty fans with outlet velocity of 8m/s can accelerate the extraction of smoke.
{"title":"Numerical Simulation Analysis on Air Supply and Smoke Exhaust Assisted by Jet Fan in Underground Car Park","authors":"Shouchong Zhao, Yanfeng Li, Lin Chang, Huiqiang Liu, Sinan Tian","doi":"10.1109/ICFSFPE48751.2019.9055815","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055815","url":null,"abstract":"Fire safety is a key issue for an underground car park with flat and restricted space. Based on the experimental results, effect of smoke exhaust assisted by jet fans has been investigated in the underground car park by numerical simulation. The influence of jet fan layout and outlet velocity on smoke temperature and visibility is discussed. Results show that the use of jet fans to assist smoke exhaust can effectively control smoke diffusion in an underground car park. The arrangement of twenty fans with outlet velocity of 8m/s can accelerate the extraction of smoke.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"21 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83888652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICFSFPE48751.2019.9055854
Yunxuan Luo, Yuanyi Xie, Jiangang Zhang, Peng Wang
Aiming at the problem of vertical fire spread of exterior walls of super high-rise buildings, the measures to prevent the fire spread of the exterior walls are given in two aspects: the vertical fire separation between standard floors and the vertical fire separation between function sections by refuge floor. The numerical simulation method is used to study the characteristics that the fire smoke flow vertically spreads through the exterior walls. The simulation results show that under the disadvantage of fire extinguished failure, glass curtain walls of the adjacent floors will not break down, and the hot smoke of fire floor will not spread into the adjacent floors by outdoor ways. Even if the curtain walls of adjacent floors break down, the hot smoke in the fire floor will not ignite the indoor combustibles of the adjacent floors by outdoor ways, and the fire will not spread into the adjacent floors.
{"title":"Numerical Simulation Research on Vertical Fire Spread Control on the Outside of Super High-rise Building","authors":"Yunxuan Luo, Yuanyi Xie, Jiangang Zhang, Peng Wang","doi":"10.1109/ICFSFPE48751.2019.9055854","DOIUrl":"https://doi.org/10.1109/ICFSFPE48751.2019.9055854","url":null,"abstract":"Aiming at the problem of vertical fire spread of exterior walls of super high-rise buildings, the measures to prevent the fire spread of the exterior walls are given in two aspects: the vertical fire separation between standard floors and the vertical fire separation between function sections by refuge floor. The numerical simulation method is used to study the characteristics that the fire smoke flow vertically spreads through the exterior walls. The simulation results show that under the disadvantage of fire extinguished failure, glass curtain walls of the adjacent floors will not break down, and the hot smoke of fire floor will not spread into the adjacent floors by outdoor ways. Even if the curtain walls of adjacent floors break down, the hot smoke in the fire floor will not ignite the indoor combustibles of the adjacent floors by outdoor ways, and the fire will not spread into the adjacent floors.","PeriodicalId":6687,"journal":{"name":"2019 9th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE)","volume":"68 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86094058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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