| 水电站不同火源强度烟气运动模拟 |
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| 引用本文： | 申健,李安桂,马江燕.水电站不同火源强度烟气运动模拟[J].消防科学与技术,2011,30(12). |
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| 作者姓名： | 申健 李安桂 马江燕 |
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| 作者单位： | 1. 西安建筑科技大学环境与市政工程学院,陕西西安,710055
2. 中铁第一勘察设计院集团有限公司,陕西西安,710043 |
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| 基金项目： | 陕西省"13115"科技创新工程重大科技专项，陕西省教育厅专项，西安市城乡建设科技项目，西安建筑科技大学青年基金 |
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| 摘 要： | 应用FDS模拟水电站地下主厂房火灾烟气填充与流动动态过程,分析不同火源强度下烟气分层规律.重点分析火源强度为10 MW时的烟气填充过程、顶棚射流温度和横向烟气温度的变化特点.结果表明,烟气到达某一高度的时间随火源强度的变化服从一阶指数衰减；顶棚射流温度和烟气层横向温度变化具有很强的规律性；下层空气温度不高但浓度相对较高；同一水平面的烟气浓度分布很不均匀,距火源30 m以外处的浓度是距火源中心10 m以内处浓度的2～3倍.
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| 关 键 词： | 水电站 封闭空间 大涡模拟 烟气浓度 |
Smoke movement simulation of hydropower station fire with different fire intensity |
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| SHEN Jian,LI An-gui,MA Jiang-yan.Smoke movement simulation of hydropower station fire with different fire intensity[J].Fire Science and Technology,2011,30(12). |
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| Authors: | SHEN Jian LI An-gui MA Jiang-yan |
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| Affiliation: | SHEN Jian1,LI An-gui1,MA Jiang-yan2(1.School of Environmental & Municipal Engineering,Xi'an University of Architecture & Technology,Shannxi Xi'an 710055,China,2.The First Survey & Design Institute of China Railways,Shannxi Xi'an 710043,China) |
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| Abstract: | FDS simulation method was applied to study the smoke filling process and flow dynamics in underground main powerhouse of hydropower station,to obtain the rule of smoke layering.The characteristics of smoke filling process,ceiling jet temperature,and horizontal smoke temperature when the fire intensity is 10 MW was focused on.Result showed that,the required time for smoke to reach a certain height changes with fire intensity according to first-order exponential decay;the ceiling jet temperature and smoke lay... |
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| Keywords: | hydropower station enclosure space large eddy simulation smoke concentration |
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