| 吴振坤,张和平,盛业华,陈震,胡浩,姚斌.地铁站内空气幕防烟效果的数值模拟研究[J].火灾科学,2013,22(1):31-35. |
| 地铁站内空气幕防烟效果的数值模拟研究 |
| Numerical simulation study on the smoke blockage effect of air curtains in a real subway station |
| 投稿时间：2013-01-08 修订日期：2013-03-11 |
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| DOI：10.3969/j.issn.1004-5309.2013.01.05 |
| 基金项目:公安部消防局科研计划项目，编号：2011XFCX007；国家科技部十二五科技支撑计划，编号：2011BAK03B02 |
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| 中文关键词: 空气幕 出口射流速度 出口射流角度 阻烟效果 |
| 英文关键词:Air curtain Exit jet velocity Exit jet angle Smoke blockage |
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| 中文摘要: |
| 地铁站内站台层发生火灾时，站台层的烟气会通过站台层到站厅层的楼扶梯蔓延至站厅层。为了研究楼扶梯口处设置空气幕对站台层的烟气的阻挡效果，笔者进行了数值模拟研究。主要研究的是空气幕的出口风速，出口射流角度对烟气的阻挡效果。设置的空气幕风速有3m/s，4m/s，5m/s，10m/s；设置的角度有0°，15°，30°。通过模拟对比空气幕前后温度变化，得出风幕风速为4m/s或者5m/s时即可较好阻挡烟气。角度为15°的空气幕比0°和30°的空气幕挡烟效果好。 |
| 英文摘要: |
| The smoke will flow into stairwell when there is fire in platform floor. In order to study the smoke blockage effect of air curtain exit jet. The author studied it by numerical simulation. Main research is on the velocities and angles of air curtain exit jet. The velocities were set as 3m/s,4m/s,5m/s and 10m/s. The angles were set as 0°,15°and 30°。By comparative of temperature front and back of air curtain exit jet. It was found that when the velocity was 4m/s or 5m/s can obstruct the smoke very well. The angle of 15°is better than 0°and 30°for the block off smoke. |
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