| 高原低压环境受限空间顶棚射流重力流区域的温度特性 |
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| 引用本文： | 王彦,涂然,于春雨,方俊,王进军,张永明. 高原低压环境受限空间顶棚射流重力流区域的温度特性[J]. 燃烧科学与技术, 2011, 0(5): 451-455 |
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| 作者姓名： | 王彦 涂然 于春雨 方俊 王进军 张永明 |
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| 作者单位： | 中国科学技术大学火灾科学国家重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(51036007) |
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| 摘 要： | 在受限空间内,针对稳定热释放速率火源,运用经验公式与压力相似模型,推导出顶棚射流重力流区域在烟气发展段与稳定段温度随气压变化的关系.理论分析表明,受限空间内顶棚射流与竖直壁面碰撞前,高原低压环境探测器位置处温度与环境温度的差与在常压环境下的比值近似等于环境温度比；而当烟气沉降达到稳定状态时,二者比值为当地压强比的2/3...
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| 关 键 词： | 顶棚射流 高原低压 火灾探测 受限空间 烟气温度 |
Influence of High Altitude on Smoke Temperature in Gravity Flow Zone Under a Ceiling of Confined Space |
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| WANG Yan,TU Ran,YU Chun-yu,FANG Jun,WANG Jin-jun,ZHANG Yong-ming. Influence of High Altitude on Smoke Temperature in Gravity Flow Zone Under a Ceiling of Confined Space[J]. Journal of Combustion Science and Technology, 2011, 0(5): 451-455 |
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| Authors: | WANG Yan TU Ran YU Chun-yu FANG Jun WANG Jin-jun ZHANG Yong-ming |
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| Affiliation: | WANG Yan,TU Ran,YU Chun-yu,FANG Jun,WANG Jin-jun,ZHANG Yong-ming(State Key Laboratory of Fire Science,University of Science and Technology of China,Hefei 230027,China) |
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| Abstract: | According to the theoretical analysis and experimental validation,the smoke temperature of fire with a steady heat release rate in gravity flow zone under a ceiling of confined space is analyzed under different atmospheric pressure.The results show that the temperature difference ratio of this point to the environment is equal to the envi-ronment temperature ratio of low atmospheric pressure to normal pressure at the smoke layer development stage.How-ever,the ratio is equal to 2/3 power of pressure ratio wh... |
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| Keywords: | ceiling jet flow high altitude fire detection confined space smoke temperature |
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