摘要
通过建立竖井型城市隧道火灾模型,找出隧道最不利火灾情况,应用大型流体力学计算软件STAR-CD对隧道内烟气流动进行模拟分析,得出了火灾工况下隧道内烟气在自然排烟模式下的流动规律,确定了火灾工况下城市隧道通风排烟开孔形式,解决了城市隧道采用自然通风能否满足火灾工况下的排烟要求等问题,提出了安全逃生的基本要求,此结论对竖井型城市隧道的建设有一定的理论指导意义。
Through establishing fire model of the city tunnel with vertical well,identifying the worst tunnel fire case,simulating and analyzing the smoke flow inside the tunnel with the application of large-scale computational fluid dynamics software STAR-CD.The smoke flow rules of natural mode in the fire case have been found.The city tunnel opening shape for smoke ventilation in fire conditions have been determined.The question whether natural ventilation can meet the smoke exhausting requirement in fire conditions of the city tunnel has been solved.The basic requirements of safe escape have been proposed.This conclusion has some theoretical significance for the construction of city tunnel with vertical well.
出处
《洁净与空调技术》
2012年第1期1-3,13,共4页
Contamination Control & Air-Conditioning Technology
关键词
城市隧道
竖井
火灾烟气
模拟
City tunnel
Vertical well
Fire smoke
Simulation
