化工学报 ›› 2022, Vol. 73 ›› Issue (9): 4226-4234.DOI: 10.11949/0438-1157.20220698

• 过程安全 • 上一篇    下一篇

竖直射流火撞击障碍管道数值模拟分析

廖珊珊1(), 张少刚1(), 陶骏骏2, 刘家豪1, 汪金辉1   

  1. 1.上海海事大学海洋科学与工程学院,上海 201306
    2.常熟理工学院材料工程学院,江苏 常熟 215500
  • 收稿日期:2022-05-14 修回日期:2022-06-23 出版日期:2022-09-05 发布日期:2022-10-09
  • 通讯作者: 张少刚
  • 作者简介:廖珊珊(1998—),女,硕士研究生,202030410067@ stu.shmtu.edu.cn
  • 基金资助:
    国家自然科学基金青年基金项目(51909152)

Numerical simulation analysis of vertical jet fire impinging on the pipeline

Shanshan LIAO1(), Shaogang ZHANG1(), Junjun TAO2, Jiahao LIU1, Jinhui WANG1   

  1. 1.School of Marine Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
    2.School of Materials Engineering, Changshu Institute of Technology, Changshu 215500, Jiangsu, China
  • Received:2022-05-14 Revised:2022-06-23 Online:2022-09-05 Published:2022-10-09
  • Contact: Shaogang ZHANG

摘要:

当前对于竖直向上屏障射流火的研究大多集中于顶棚射流,对于竖直向上射流火羽流撞击管道的研究相对较少。为研究竖直向上射流火羽流撞击管道的特征演化行为,基于燃烧学及流体力学基本原理,运用Fluent数值模拟软件,通过控制变量法对不同热释放速率、障碍管道直径及管壁-火源间距因素进行探究。研究表明障碍管道直径和管壁-火源间距对火焰高度和宽度均有一定程度的影响,且得到了基于Froude数的无量纲火焰高度表征模型。

关键词: 射流火, 甲烷, 障碍管道, 火焰长度, 火焰宽度, 数值模拟, 安全

Abstract:

For the vertical upward barrier jet fire, the predecessors mostly studied the ceiling jet, but there were very few studies on the vertical upward jet fire plume impinging on the pipeline. In order to study the evolution behavior characteristics of the vertical upward jet fire plume hitting the pipeline, based on the basic principles of combustion and fluid mechanics, the influence of different heat release rates, diameters of the obstacle pipelines and the distance between the pipe wall and the fire source were investigated by using the Fluent software. It is concluded that the diameter of the obstacle pipe and the distance between the pipe wall and the fire source have a certain degree of influence on the flame height and width, and a dimensionless flame height representation model based on Froude number is obtained.

Key words: jet fire, methane, obstacle pipes, flame length, flame width, numerical simulation, safety

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