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 ›› 2025, Vol. 44 ›› Issue (7): 947-955.

• • 上一篇    下一篇

灭火泡沫在深液池表面铺展过程模拟研究

包有权1,2,3, 智会强1,2,3, 王璐1,2,3, 范亚坤1,2,3   

  1. （1.应急管理部天津消防研究所，天津 300381； 2.工业与公共建筑火灾防控技术应急管理部重点实验室，天津 300381； 3.天津市消防安全技术重点实验室，天津 300381）
  • 收稿日期:2024-07-12 修回日期:2024-10-11 出版日期:2025-07-15 发布日期:2025-07-15
  • 作者简介:包有权，应急管理部天津消防研究所第二研究室副研究员，博士，主要从事油气储运和石油化工消防技术研究，天津市南开区卫津南路110号，300381，baoyouquan@tfri.com.cn。
  • 基金资助:
    国家自然科学基金青年科学基金项目（12202376）；天津市应用基础研究多元投入-城市消防项目（22JCYBJC01700， 22JCZDJC00830）

Numerical modeling of firefighting foam spread over deep liquid pools

Bao Youquan1,2,3, Zhi Huiqiang1,2,3, Wang Lu1,2,3, Fan Yakun1,2,3   

  1. (1. Tianjin Fire Science and Technology Research Institute of MEM, Tianjin 300381, China; 2. Key Laboratory of Fire Protection Technology for Industry and Public Building, Ministry of Emergency Management, Tianjin 300381, China; 3. Tianjin Key Laboratory of Fire Safety Technology, Tianjin 300381, China)
  • Received:2024-07-12 Revised:2024-10-11 Online:2025-07-15 Published:2025-07-15

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摘要： 建立了灭火泡沫在深液池表面铺展数理模型和数值计算方法，分析了灭火泡沫在液体表面铺展瞬变过程，研究了初始条件、泡沫流变性及液体性质对泡沫铺展过程的影响。结果表明，随着泡沫覆盖层向前铺展，其铺展前沿的速度逐渐衰减。入口处泡沫覆盖层初始高度或速度的增大有利于泡沫铺展，使得泡沫铺展前沿的推进速度增大，泡沫覆盖层在给定时刻铺展得更远。受灭火泡沫屈服应力的影响，泡沫覆盖层以塞状流向下游铺展。液体黏度对泡沫铺展的影响不是单调的，当液体黏度较低时，湍流边界层占主导地位，液体黏度的增大有利于泡沫的铺展；相反，如果液体黏度较高，层流边界层占主导地位，液体黏度的增加不利于泡沫的铺展。

关键词: 灭火泡沫, Herschel-Bulkley流体, 深液池, 泡沫铺展, 边界层流

Abstract: The mathematical model and numerical method of firefighting foam spread over deep liquid pools were established, and the transient process of firefighting foam spread was analyzed. The effects of the initial conditions, foam rheological behaviors and liquid properties on the foam spreading process were studied. The results show that the propagation velocity of the foam front gradually decays as the foam layer spreads downstream. A higher initial foam velocity or foam layer thickness at the inlet favors foam spreading, which results in increased foam front velocity, and the foam spreads further at a given moment. Affected by the yield stress of the firefighting foam, the foam layer spreads forward in a plug-like flow. The effect of liquid viscosity on foam spreading is not monotonic. If the liquid viscosity is low and the turbulent boundary layer dominates, an increase in liquid viscosity is beneficial for foam spreading; otherwise, the laminar boundary layer dominates, the increase in liquid viscosity will hinder foam spreading.

Key words: firefighting foam, Herschel-Bulkley fluid, deep liquid pools, foam spread, boundary layer flow