Pool Fire Behavior in Wind

A special issue of Fire (ISSN 2571-6255).

Deadline for manuscript submissions: 15 December 2024 | Viewed by 3540

Special Issue Editors

Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
Interests: pool fire; multiple fires; heat transfer; gas flow; CFD simulation
Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
Interests: fire in underground spaces; pool fire; tunnel fire; compartment fire; cable fire and fire spread; oil fire; fire dynamics
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Guest Editor
Anhui Province Key Laboratory of Electric Fire and Safety Protection, State Grid Anhui Electric Power Research Institute, Hefei 230601, China
Interests: pool fire; tunnel fire; heat transfer

Special Issue Information

Dear Colleagues,

A pool fire is defined as a diffusion flame established on top of a horizontal fuel surface. According to statistics, it is one of the most frequent accidents that occurs in industrial production and the transportation of hazardous materials. Pool fire disasters mostly occur in open space, and environmental wind commonly plays a role. Pool fire behavior is then driven by the coupling of buoyancy and wind. In addition to changing the flame geometry by tilting it, wind can also affect the heat feedback mechanisms, as well as the interaction between fuel–air in mixed-buoyancy and boundary-layer diffusion combustion. We need to gain an in-depth understanding burning behavior of pool fires, reveal the physical mechanism of pool fire burning, and understand their thermal hazard characteristics to improve the prevention and control capabilities of heavy and extraordinary major fires in the petrochemical industry.

This Special Issue aims to provide selected contributions regarding the flame geometry, heat transfer mechanisms, and gas flow characteristics of pool fires in wind. Potential topics include, but are not limited to:

  • The flame geometry of pool fires and the wind heat transfer mechanisms of pool fires;
  • The heat feedback of pool fires in wind;
  • The gas flow characteristics of pool fire behavior in wind;
  • The gas temperatures of pool fire behavior in wind;
  • The mixture fraction of pool fire behavior in wind.

Dr. Bo Li
Dr. Kaihua Lu
Dr. Tiantian Tan
Guest Editors

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Keywords

  • pool fire
  • wind
  • gas flow
  • heat transfer
  • flame geometry

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Published Papers (2 papers)

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Research

12 pages, 2868 KiB  
Article
Numerical Simulation of Flow and Flame Dynamics of a Pool Fire Under Combined Effects of Wind and Slope
by Yujia Sun, Lin Jiang and Yue Chen
Fire 2024, 7(11), 421; https://doi.org/10.3390/fire7110421 - 20 Nov 2024
Viewed by 487
Abstract
Wind has a significant effect on pool fire behavior, which is relevant to many fire conditions, such as wildfires, building fires, and oil transportation fires. Although fire behavior and morphology changes have received considerable attention and been widely researched, there are few works [...] Read more.
Wind has a significant effect on pool fire behavior, which is relevant to many fire conditions, such as wildfires, building fires, and oil transportation fires. Although fire behavior and morphology changes have received considerable attention and been widely researched, there are few works concerning the flow and flam dynamics of pool fire. A large eddy simulation model is adopted to investigate the flow and flame dynamics of a rectangular pool fire considering the combined effects of wind and slope. The results show that, with a wind speed of 0.5 m/s, a flame develops immediately downstream of the fire source and sustains two flanks of plume. Further downstream, the plume starts to rise due to buoyant force. Temperature, velocity, and vorticity distributions show significantly different shapes at different streamwise locations. Near the fire source, the flame is confined to a small region around the fire source. The air circulation downstream shows a cylindrical spiring pattern. When the wind speed increases, the temperature and velocity become more parallel to the surface and their maximum values increase. On the contrary, the temperature fluctuations and turbulent kinetic energy decrease with the wind speed, and they are more frequent near the flame tails. Full article
(This article belongs to the Special Issue Pool Fire Behavior in Wind)
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18 pages, 8593 KiB  
Article
An Experimental Study of Pool Fire Characteristics under the Effects of Cross Winds and Baffles
by Xin Huang, Zhilei Yu and Zhiming Zhan
Fire 2024, 7(1), 4; https://doi.org/10.3390/fire7010004 - 21 Dec 2023
Cited by 1 | Viewed by 2274
Abstract
The pool fires that occur behind obstructions in a ventilated environment are very different from other wind-blown pool fires. The pool fire formed by fuel leakage in an engine nacelle is a typical example of a pool fire influenced by cross winds and [...] Read more.
The pool fires that occur behind obstructions in a ventilated environment are very different from other wind-blown pool fires. The pool fire formed by fuel leakage in an engine nacelle is a typical example of a pool fire influenced by cross winds and baffles. Mastering the combustion characteristics of this type of fire is of great significance for fire prevention and control. In this study, the burning rate, flame length, and flame tilt angle of heptane pool fires behind a baffle under different cross wind velocities (ranging from 0 to 5 m/s) were experimentally investigated. Square pool fires with dimension of 8 cm and 12 cm with baffle height from 4 to 12 cm and different distances between fire and baffle (0, 20, 30 cm) were tested in a wind tunnel. The experimental results show that the burning rate increases with the increase in cross wind velocity for each baffle height. As wind velocity exceeds 2 m/s, the burning rate first decreases and then increases with the increase in baffle height. The flame length initially increases and then decreases with increasing wind velocity. The upper flame tilt angle is mainly affected by the cross wind, while the bottom flame tilt angle is influenced by the combined effects of cross wind velocity, baffle height, and distance between baffle and flame. The empirical correlations under different distances between baffle and flame, with wind velocity and baffle height accounted for, are then proposed for the dimensionless heat release rate and the flame length of heptane pool fires. Full article
(This article belongs to the Special Issue Pool Fire Behavior in Wind)
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