主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2020, Vol. 39 ›› Issue (5): 607-610.

• • 上一篇    下一篇

水平喷射火撞击垂直障碍物的温度特性研究

董炳燕1，吴晋湘1，黄有波2   

  1. 1.河北工业大学 能源与环境工程学院，天津 300401； 2.北京工业大学 建筑工程学院，北京 100124
  • 出版日期:2020-05-15 发布日期:2020-05-15
  • 作者简介:董炳燕（1987-），女，山东东营人，河北工业大学能源与环境工程学院博士研究生，主要从事火灾蔓延特性与建筑消防技术研究，天津市北辰区西平道5340号，300401。
  • 基金资助:
    国家自然科学基金资助项目(51806057)

Study on the temperature profile of horizontally oriented jet fire impinging on the vertical plate

DONG Bing-yan1, WU Jin-xiang1, HUANG You-bo2   

  1. 1. School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China; 2. College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
  • Online:2020-05-15 Published:2020-05-15

摘要： 为了研究喷射火撞击邻近建筑物后火羽流的温度场特性，采用数值模拟软件建立喷射火模型，模拟不同长宽比的矩形泄漏孔甲烷水平喷射火撞击障碍物场景，分析喷射火温度在水平方向和障碍物壁面垂直方向的分布特征。结果表明：障碍物壁面温度场受燃气喷射速率和泄漏孔形状特征影响显著；泄漏速率越大，温升区宽度更宽，泄漏孔长宽比越大，温升区域的宽度弱化越显著；泄漏速率增加，使温升区在垂直方向上和水平面上的影响范围更宽，且泄漏孔长宽比增大使温升区厚度增加，水平面的影响宽度发生变化。

关键词: 喷射火, 温度场, 矩形泄漏孔, 壁面羽流

Abstract:  In order to study the temperature profile of horizontally oriented jet fire impinging on the vertical plate, numerical simulation software was used to simulate the rectangular leakage port methane jet fire with different aspect ratios. The temperature distribution features on horizontal and vertical direction over obstruction surface were analyzed. Results show that the leakage velocity and aspect rate of orifice have a significant effect on the temperature distribution over obstruction surface. The larger the leakage velocity, the wider the temperature rise area, but the width of temperature rise area decreases as the aspect rate of orifice increasing. The temperature rise area increases at vertical and transverse direction with the increasing velocity.Meanwhile, the larger aspect rate of orifice results in the thicker temperature rise area and varies width of temperature rise area.

Key words:  jet fire; temperature distribution, rectangular orifice, flame plume over the wall