诱导风机设置对排烟效果影响模拟研究  

Numerical simulation on the application of impulse exhaust system in undergroundcar park

作　　者：王依晗[1] 陆松[1] 张瑞芳[1] 李立明[1] 张和平[1] 

机构地区：[1]中国科学技术大学火灾科学国家重点实验室,安徽合肥230026

出　　处：《消防科学与技术》2011年第2期109-112,共4页Fire Science and Technology

摘　　要：运用FDS分析诱导排烟系统的布置方式、机械排烟量、诱导风速等敏感参数对排烟效果的影响,与风管式排烟系统进行比较。结果表明,诱导排烟系统在合理布置的条件下比风管式排烟系统更利于维持车库内的能见度;诱导排烟的能见度随机械排烟量的增加而提高;诱导风机风速受机械排烟能力的限制。Numerical simulations have been carried out for in vestigating the feasibility of the use of impulse ventilation systern for smoke control in underground car park. By changing parameters such as arrangement, exhaust rate and impulse velocity, the impact of these parameters on the exhaust effect was analyzed. Ductwork system for smoke control has also been simulated to study the difference between the two exhaust systems. The results have shown that the well designed impulse exhaust system is more capable to keep good visibility in the ear park than the ductwork system. The visibility in the garage increased with the exhaust rate increasing; meanwhile, enlarge impulse velocity under proper exhaust rate can also heighten the visibility.

关 键 词：诱导排烟 排烟量 诱导风速 地下车库 数值模拟 

分 类 号：X924.4[环境科学与工程—安全科学] TU96[建筑科学]