Study on Temperature Evolution of Facade Thermal Plume from a Fire Compartment with Circular Opening

Zijian ZHANG; Baien LYU; Xiaochun ZHANG; Haowen TAO; Zhangkun CHENG; Xinbao HUANG

doi:10.13409/j.cnki.jdpme.20201211002

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Study on Temperature Evolution of Facade Thermal Plume from a Fire Compartment with Circular Opening

更新时间：2025-09-25

- Study on Temperature Evolution of Facade Thermal Plume from a Fire Compartment with Circular Opening
- Journal of Disaster Prevention and Mitigation Engineering Vol. 42, Issue 4, Pages: 812-818(2022)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.20201211002
  CLC： X932
- Received：11 December 2020，
  
  Revised：2021-02-19，
  
  Published：28 August 2022
- 稿件说明：
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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.

摘要

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。

Abstract

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.

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references

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