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 ›› 2022, Vol. 41 ›› Issue (11): 1524-1528.

• • 上一篇    下一篇

基于几何导流改良火旋风发生器及其形成规律研究

周昀涵，车 辉，杨佳慧，刘苡曈   

  1. （沈阳航空航天大学 安全工程学院，辽宁 沈阳 110136）
  • 出版日期:2022-11-15 发布日期:2022-11-15
  • 作者简介:周昀涵（1999- ），女，辽宁丹东人，沈阳航空航天大学安全工程学院硕士研究生，主要从事风险分析与控制研究，辽宁省沈阳市沈北新区，110136。

Study on the improvement of fire cyclone generator based on geometric conductivity and its formation law

Zhou Yunhan， Che Hui，Yang Jiahui， Liu Yitong   

  1. （School of Safety Engineering, Shenyang Aerospace University, Liaoning Shenyang 110136, China）
  • Online:2022-11-15 Published:2022-11-15

摘要： 为设计更加合理的火旋风发生器，基于几何导流的方法探究火旋风形成条件及相关规律，进而提出火旋风高度与缝隙尺寸、油盘燃烧速度的预测关系。研究结果表明：火旋风形成需要一定量的涡流、生成涡、流体汇、摩擦力；缝隙尺寸变化会让油盘质量燃烧速率呈现抛物线变化趋势。当火旋风发生器的底边尺寸为400 mm╳400 mm，油盘直径150 mm时，缝隙为10 mm时火旋风高度最高；用200 mm油盘时，缝隙控制在30 mm时火旋风高度最高，火旋风会受燃烧速率和剪切流场双重作用。

关键词: 火旋风, 发生器, 缝隙尺寸, 燃烧速率, 剪切流场方式

Abstract: In order to design a more reasonable fire whirlwind generator, the formation conditions and related laws of the fire whirlwind are explored based on the method of geometric conductivity, and then the relationship between the height of the fire whirlwind and the gap size, and the burning speed of the oil pan is proposed. The results show that the formation of fire whirlwind requires a certain amount of vortex, generated vortex, fluid sink and friction; The change of gap size will make the mass burning rate of oil pan show a parabola trend. When the bottom edge size of the fire cyclone generator is 400 mm × 400 mm, the oil pan diameter is 150 mm and the gap is 10 mm, the fire whirlwind height is the highest; When a 200 mm oil pan is used, the height of the fire whirlwind is the highest when the gap is controlled at 30 mm, and the fire whirlwind will be affected by both the burning rate and the shear flow field.

Key words: fire whirlwind, generator, gap size, combustion rate, shear flow field