...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Tunnelling and underground space technology >Optimal distance between jet fans used to extinguish metropolitan tunnel fires: A case study using fire dynamic simulator modeling
【24h】

Optimal distance between jet fans used to extinguish metropolitan tunnel fires: A case study using fire dynamic simulator modeling

机译：用于扑灭都市隧道大火的喷气风扇之间的最佳距离：使用火灾动态模拟器建模的案例研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Several disastrous tunnel fires have occurred in recent decades; safe evacuation, minimization of damage, and reliable ventilation have received a great deal of attention. Here, we use the Fire Dynamic Simulator (FDS) software to optimize jet fan spacing in an extra-long tunnel: the Zhong Liangshan tunnel of Metropolitan Line 1 in Chongqing, China. The model tunnels were 500, 550, and 600 m in length, with cross-sectional areas of 30.72 m(2); the jet fans were elevated 5.60 m from the floor at different spacings (100, 150, and 200 m). A 5-MW fire burned at 200, 175, and 150 m from the tunnel entrance. We simulated five scenarios using FDS software and compared airflow velocity and temperature curves. We also briefly investigated the effect of the length of an extra-long tunnel. The numerical results revealed that the air temperature always remained well below the 60 degrees C that the human body can withstand during evacuation necessitated by a fire; the air velocity remained nearly constant. We built a 1:15-scale model to validate the simulation; the simulation and experimental curves were in good agreement.
机译：近几十年来发生了几起灾难性的隧道大火。安全疏散，损害最小化和可靠的通风受到了广泛的关注。在这里，我们使用Fire Dynamic Simulator（FDS）软件来优化超长隧道中的射流风扇间距：重庆大都会1号线的中梁山隧道。模型隧道的长度分别为500、550和600 m，截面积为30.72 m（2）。喷射风扇以不同的间距（100、150和200 m）从地面抬高5.60 m。距离隧道入口200、175和150 m处燃烧了5兆瓦的火。我们使用FDS软件模拟了五种情况，并比较了气流速度和温度曲线。我们还简要研究了超长隧道长度的影响。数值结果表明，在火灾导致的疏散过程中，空气温度始终保持在人体可以承受的60摄氏度以下。空气速度几乎保持恒定。我们建立了1:15比例模型来验证仿真。仿真和实验曲线吻合良好。

著录项

相似文献

  • 外文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号