| 不同边沿高度油池火燃烧行为的实验和数值模拟研究 |
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| 引用本文： | 党晓贝,何亚平,汪箭.不同边沿高度油池火燃烧行为的实验和数值模拟研究[J].火灾科学,2018,27(4):213-221. |
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| 作者姓名： | 党晓贝 何亚平 汪箭 |
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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, 合肥,230026;澳大利亚西悉尼大学, 澳大利亚 |
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| 基金项目： | 国家自然科学基金项目(51376172) |
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| 摘 要： | 采用实验和FDS数值模拟相结合的方法,探讨了边沿高度对油池火燃烧特性的影响。在实验部分,研究了燃烧速率和表观火焰高度随边沿高度的变化趋势,并分别分析了各个阶段的热反馈机制。在实验获得不同尺度、边沿高度正庚烷油池火燃烧速率的前提下,建立相应尺度的不同边沿高度油池火的Fire Dynamics Simulator(FDS)计算模型以针对火焰高度进行了数值模拟研究,分析了实际火焰高度、火焰下探高度随边沿高度的变化趋势,并提出了相关的无量纲拟合式。
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| 关 键 词： | 油池火 边沿高度 燃烧速率 火焰形态 火焰下探 |
Experimental and numerical study on burning behavior of pool fire with different lip heights |
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| DANG Xiaobei,HE Yaping,WANG Jian.Experimental and numerical study on burning behavior of pool fire with different lip heights[J].Fire Safety Science,2018,27(4):213-221. |
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| Authors: | DANG Xiaobei HE Yaping WANG Jian |
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| Institution: | State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;School of Engineering, University of Western Sydney, Sydney, Australia |
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| Abstract: | In this paper, the effect of lip height on the burning behavior of pool fire was investigated by using combined experimental and numerical methods. The dependence of burning rate and flame height on pool scale and lip height was investigated, and the heat feedback mechanisms of each phase were analyzed. Based on the experimental burning rate, Fire Dynamics Simulator (FDS) models were used to investigate the flame height of pool fires. The variation trend of actual flame height and inside flame length was investigated, with dimensionless correlations proposed. |
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| Keywords: | Pool fire Lip height Burning rate Flame geometry Inside flame |
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