1.广东工业大学环境科学与工程学院,广东 广州 510006
2.哈尔滨工业大学(深圳)机电工程与自动化学院, 广东 深圳 518055
3.中南大学土木工程学院,湖南 长沙 410075
张子健(1994—),男,博士研究生。主要从事建筑火灾与燃烧科学研究。E-mail:zijianzhang@stu.hit.edu.cn
张孝春(1987—),男,副教授,硕导,博士。主要从事火灾安全与燃烧科学研究。E-mail:xczhang1@gdut.edu.cn
收稿:2020-12-11,
修回:2021-02-19,
纸质出版:2022-08-28
移动端阅览
张子健,吕柏恩,张孝春等.圆形开口建筑火灾外立面热羽流温度演化研究[J].防灾减灾工程学报,2022,42(04):812-818.
ZHANG Zijian,LYU Baien,ZHANG Xiaochun,et al.Study on Temperature Evolution of Facade Thermal Plume from a Fire Compartment with Circular Opening[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(04):812-818.
张子健,吕柏恩,张孝春等.圆形开口建筑火灾外立面热羽流温度演化研究[J].防灾减灾工程学报,2022,42(04):812-818. DOI: 10.13409/j.cnki.jdpme.20201211002.
ZHANG Zijian,LYU Baien,ZHANG Xiaochun,et al.Study on Temperature Evolution of Facade Thermal Plume from a Fire Compartment with Circular Opening[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(04):812-818. DOI: 10.13409/j.cnki.jdpme.20201211002.
建筑火灾是火灾科学领域的重要研究方向之一,外立面热羽流温度是评价建筑火灾危险性的重要指标。基于弗洛德相似准则,利用缩尺寸单一开口燃烧腔室模型开展建筑火灾实验,对不同火源功率和开口尺寸下圆形开口建筑火灾外立面热羽流温度分布规律进行探究。研究结果表明:(1)在燃烧状态稳定下,对于确定开口尺寸和火源功率,圆形开口燃烧室内顶棚下方热气体温度基本均匀且保持一致;(2)在圆形开口建筑火灾中,火溢流和顶棚射流火焰的扩展工况下,外立面溢出热羽流温度演化与矩形开口火溢流工况相似;(3)基于热羽流温度实验数据,分别建立了不同开口尺寸、火源功率下圆形开口建筑火灾顶棚射流火焰扩展和火溢流工况的外立面溢出热羽流竖向温度预测模型。
Building fire is one of the important research orientations in fire science, and the temperature of facade spill thermal plume is a vital indicator for the hazard evaluation of building fire. On the basis of Froude similarity theory, the fire experiments on a reduced-scale fire compartment with a single opening were carried out. The temperature profile of facade thermal plume under fire of buildings with different circular openings was investigated considering various heat release rates of the fire source. The results reveal that: (1) At a steady combustion state, hot gas temperatures beneath the ceiling of the fire compartment are almost uniform for a given opening and a specific heat release rate of the fire source. (2) For both cases of spill fire plume and ceiling jet flame extension, the temperature evolutions of facade thermal plume under fire of buildings with circular opening are similar to that of spill fire plume for rectangular opening. (3) With experimental data of thermal plume temperature, new non-dimensional correlations for the cases of spill fire plume and ceiling jet flame extension were established to predict the vertical temperature of facade thermal plume under fire of buildings with different circular openings and various heat release rate of the fire source.
段海娟 , 赵永峰 , 赵金城 , 等 . 高层住宅楼外墙保温系统火灾蔓延的数值模拟 [J]. 防灾减灾工程学报 , 2015 , 35 ( 1 ): 23 - 27 .
Duan H J , Zhao Y F , Zhao J C , et al . Numerical simulation of external wall insulation system fire in high-rise residential building [J]. Journal of Disaster Prevention and Mitigation Engineering , 2015 , 35 ( 1 ): 23 - 27 . (in Chinese)
史健勇 , 刘湃 , 许清风 . 室外风对高层建筑外保温层火灾发展的影响研究 [J]. 防灾减灾工程学报 , 2014 , 34 ( 5 ): 571 - 576 .
Shi J Y , Liu P , Xu Q F . Research on fire spread characteristics of insulation layers of high-rise buildings under outdoor wind condition [J]. Journal of Disaster Prevention and Mitigation Engineering , 2014 , 34 ( 5 ): 571 - 576 . (in Chinese)
邓夕胜 , 吴仲青 . 大空间建筑火灾中钢梁的温升 [J]. 防灾减灾工程学报 , 2019 , 39 ( 2 ): 347 - 553 .
Deng X S , Wu Z Q . Temperature rise of steel beam in large space building fire [J]. Journal of Disaster Prevention and Mitigation Engineering , 2019 , 39 ( 2 ): 347 - 553 . (in Chinese)
雷晶晶 , 王妍 , 周汝 , 等 . 无风条件下火灾时建筑外立面烟羽流形态特征研究 [J]. 中国安全科学学报 , 2018 , 28 ( 12 ): 52 - 57 .
Lei J J , Wang Y , Zhou R , et al . Study on form of smoke plume at facade of building in fire under windless condition [J]. China Safety Science Journal , 2018 , 28 ( 12 ): 52 - 57 . (in Chinese)
Sun X P , Hu L H , Ren F , et al . Flame height and temperature profile of window ejected thermal plume from compartment fire without facade wall [J]. International Journal of Thermal Sciences , 2018 , 127 : 53 - 60 .
任飞 . 不同通风及上下双层腔室火灾演化与开口火溢流行为研究 [D]. 合肥 : 中国科学技术大学 , 2019 .
Ren F . Studies on fire development inside compartment and the associated ejected facade flame behavior under different ventilation and two-floor compartment condition [D]. Hefei : University of Science and Technology of China , 2019 . (in Chinese)
Yokoi S . Study on the prevention of fire spread caused by hot upward current [R]. Japan : Building Research Institute,Ministry of Construction , 1960 .
Ohmiya Y , Hori Y , Sagimori K , et al . Predictive method for properties of flame ejected from an opening incorporating excess fuel [J]. Fire Safety Science , 2000 , 4 : 375 - 386 .
Heskestad G . Virtual origins of fire plumes [J]. Fire Safety Journal , 1983 , 5 ( 2 ): 109 - 114 .
Lee Y P . Heat fluxes and flame heights in external facade fires [D]. U.K. : University of Ulster,FireSERT , 2006 .
Lee Y P , Delichatsios M A , Ohmiya Y . The physics of the outflow from the opening of an enclosure fire and re-examination of Yokoi’s correlation [J]. Fire Safety Journal , 2012 , 49 : 82 - 88 .
Tang F , Hu L H , Delichatsios M A , et al . Experimental study on flame height and temperature profile of buoyant window spill plume from an under-ventilated compartment fire [J]. International Journal of Heat and Mass Transfer , 2012 , 55 : 93 - 101 .
Zhang X C , Zhang Z J , Zhang Z Y , et al . Experimental investigation of compartment fires with circular opening: From the aspects of internal temperature and facade flame [J]. Combustion and Flame , 2020 , 213 : 107 - 116 .
Quintiere J G . Scaling applications in fire research [J]. Fire Safety Journal , 1989 , 15 ( 1 ): 3 - 29 .
Zhang X C , Zhang Z J , Su G K , et al . Experimental study on thermal hazard and facade flame characterization induced by incontrollable combustion of indoor energy usage [J]. Energy , 2020 , 207 : 118173 .
Karlsson B , Quintiere J G . Enclosure fire dynamics [M]. Boca Raton,FL : CRC Press , 1999 .
Lee Y P , Delichatsios M A , Silcock G W H . Heat fluxes and flame heights in facades from fires in enclosures of varying geometry [J]. Proceedings of the Combustion Institute , 2007 , 31 ( 2 ): 2521 - 2528 .
0
浏览量
0
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构
苏公网安备32010202012147号
