Study on radiation and temperature characteristics of aviation kerosene fire with different sizes in pools combustion

Xinsheng JIANG; Lin ZHANG; Donghai HE; Wenchao HU; Luxing LIU; Yadong ZHAO

doi:10.11949/0438-1157.20190450

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Study on radiation and temperature characteristics of aviation kerosene fire with different sizes in pools combustion

Process safety | 更新时间：2020-06-24

- Study on radiation and temperature characteristics of aviation kerosene fire with different sizes in pools combustion
- CIESC Journal Vol. 71, Issue 3, Pages: 1398-1408(2020)
- 作者机构：
  
  陆军勤务学院油料系，重庆 401331
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20190450
  CLC： X 937
- Received：17 May 2019，
  
  Revised：2019-09-11，
  
  Published：05 March 2020
- 稿件说明：
移动端阅览
蒋新生, 张霖, 何东海, 胡文超, 刘鲁兴, 赵亚东. 航空煤油不同尺寸池火热流及温度特性研究[J]. 化工学报, 2020, 71(3): 1398-1408

JIANG Xinsheng, ZHANG Lin, HE Donghai, HU Wenchao, LIU Luxing, ZHAO Yadong. Study on radiation and temperature characteristics of aviation kerosene fire with different sizes in pools combustion[J]. CIESC Journal, 2020, 71(3): 1398-1408
蒋新生, 张霖, 何东海, 胡文超, 刘鲁兴, 赵亚东. 航空煤油不同尺寸池火热流及温度特性研究[J]. 化工学报, 2020, 71(3): 1398-1408 DOI： 10.11949/0438-1157.20190450.

JIANG Xinsheng, ZHANG Lin, HE Donghai, HU Wenchao, LIU Luxing, ZHAO Yadong. Study on radiation and temperature characteristics of aviation kerosene fire with different sizes in pools combustion[J]. CIESC Journal, 2020, 71(3): 1398-1408 DOI： 10.11949/0438-1157.20190450.

摘要

为研究航空煤油池火燃烧过程中热流与温度特性，搭建了油料燃烧模拟实验台架。通过分析实验图像与数据，发现航空煤油池火辐射热通量随径向距离和高度的增大逐渐减小，其中辐射热通量对高度增加更为敏感，随高度升高下降幅度更快；热辐射先于热对流达到强度最大值，随后在稳定燃烧阶段后期热对流强度存在跃升现象，强度超过热辐射强度，成为该阶段主要传热方式；航空煤油池火中心线上，下部区域火焰连续燃烧、氧气浓度低，上部区域油火卷吸空气、氧气浓度较高，是导致不同高度最高温度到达时刻不同的主要原因；对不同尺寸油池火来说，其热通量峰值随着油池尺寸增大而增大，同时方形油池热通量峰值显著高于圆形油池。

Abstract

In order to study the characteristics of heat flow and temperature in the combustion process of aviation kerosene tank fire

an oil combustion simulation bench was set up. By analyzing the experimental images and data

it is found that the radiant heat flux of kerosene pool fire decreases gradually with the increase of radial distance and height

in which the radiant heat flux is more sensitive to the increase of height and decreases more rapidly with the increase of height. The heat radiation reached the maximum intensity before the heat convection

and then there was a jump in the heat convection intensity in the later stage of the stable combustion

and the intensity exceeded the heat radiation intensity and became the main heat transfer mode in this stage. On the central line of the kerosene pool fire

the flame in the lower area burns continuously with low oxygen concentration

while the oil fire in the upper area absorbs air and has high oxygen concentration

which is the main reason for the difference in the time when the highest temperature at different heights arrives. For different sizes of oil pool fires

the peak heat flux increases with the size of the oil pool

and the peak heat flux of the square oil pool is significantly higher than that of the round oil pool.

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references

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