| 火源位置的不同对自然排烟的影响 |
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| 引用本文： | 孙昊,王佰顺. 火源位置的不同对自然排烟的影响[J]. 消防科学与技术, 2012, 31(1): 23-26 |
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| 作者姓名： | 孙昊 王佰顺 |
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| 作者单位： | 安徽理工大学能源与安全学院,安徽淮南,232001 |
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| 基金项目： | 安徽省科技攻关计划重大项目 |
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| 摘 要： | 在双区模型的基础上,给出墙边羽流和轴对称羽流的排烟稳态方程,最终求得烟气层密度以及高度。通过FDS模拟,得出不同工况下的排烟效果,验证了理论计算结果。得出结论认为,同种火源条件下,墙边羽流模型由于烟气产生速率小于轴对称羽流模型,烟气层密度较大,高度较高。
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| 关 键 词： | 自然排烟 准稳态 羽流模型 FDS |
The effects of different fire source position on natural smoke exhaust |
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| SUN Hao , WANG Bai-shun. The effects of different fire source position on natural smoke exhaust[J]. Fire Science and Technology, 2012, 31(1): 23-26 |
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| Authors: | SUN Hao WANG Bai-shun |
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| Affiliation: | (School of Mineral and Safety Engineering,Anhui University of Science and Technology,Anhui Huainan 232001,China) |
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| Abstract: | Based on the two-region model,the steady-state equation of wall plume and axisymmetric plume were introduced,and the density and height of smoke layer were calculated.By FDS simulation,the smoke effects in different conditions were calculated,which verified the theoretical calculation.Results showed that when the fire sources are the same,because the gas production rate of wall plume is smaller than the axisymmetric plume,the density of its smoke layer is bigger,and the height is higher. |
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| Keywords: | natural smoke exhaust quasi-steady state plume model FDS |
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