环境风对受限边界水平喷射火温度的影响研究
Study on the Influence of Environmental Wind on the Temperature of Restricted Boundary Horizontal Jet Fire
DOI: 10.12677/me.2025.136147, PDF,    科研立项经费支持
作者: 廖梓富, 颜 华, 向 超, 赖鹏浩：重庆科技大学安全科学与工程学院，重庆
关键词: 喷射火；环境风；受限边界；泄漏速率；温度分布；Jet Fire； Environmental Wind； Restricted Boundary； Leakage Rate； Temperature Distribution
摘要: 为了研究环境风对受限边界水平喷射火温度的影响，采用FDS软件模拟不同环境风速(0 m/s、0.5 m/s、1 m/s、1.5 m/s、2 m/s)以及不同甲烷泄漏速率(40 m/s、60 m/s、80 m/s、100 m/s)下水平喷射火撞击垂直壁面的温度分布特征。研究结果表明：垂直壁面温度受环境风和泄漏速率的影响，泄漏速率增加会使垂直壁面高温区域越宽且最高温度增加，环境风会导致火焰下洗现象的发生，高温区域下移，风速的增加使得温度分布偏移越明显；纵向温度均呈现随着垂直距离的增加而先增至最高温度后衰减的趋势，泄漏速率越大，纵向最高温度越高，环境风会使高温区域下移且纵向温度衰减趋势越强。通过采用环境风速来修正得到水平喷射火撞击垂直壁面后的纵向温度衰减规律。
Abstract: In order to study the effect of environmental wind on the temperature of confined boundary horizontal jet fire, FDS software was used to simulate the temperature distribution characteristics of horizontal jet fire impact on vertical walls under different environmental wind speeds(0 m/s, 0.5 m/s, 1 m/s, 1.5 m/s, 2 m/s) and methane leakage rates (40 m/s, 60 m/s, 80 m/s, 100 m/s). The research results indicate that the vertical wall temperature is affected by environmental wind and leakage rate. An increase in leakage rate will widen the high-temperature area of the vertical wall and increase the maximum temperature. Environmental wind will cause the occurrence of flame downwash phenomenon, and the high-temperature area will move downwards. The increase in wind speed will make the temperature distribution shift more obvious; The vertical temperature shows a trend of first increasing to the highest temperature and then decreasing with the increase of vertical distance. The higher the leakage rate, the higher the vertical maximum temperature. The environmental wind will cause the high-temperature area to move downwards and the vertical temperature attenuation trend will be stronger. By using environmental wind speed to correct the longitudinal temperature attenuation law after the horizontal jet fire impacts the vertical wall.
文章引用：廖梓富, 颜华, 向超, 赖鹏浩. 环境风对受限边界水平喷射火温度的影响研究[J]. 矿山工程, 2025, 13(6): 1316-1326. https://doi.org/10.12677/me.2025.136147

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