地铁隧道内壁龛尺寸对射流风机效果的影响
Influence of niche size on jet fan effect in underground railway tunnel
摘要：
现阶段地铁隧道通风设计中射流风机基本采用壁龛式设计。利用CFD对多达45种不同的壁龛尺寸以及无壁龛条件下的射流效果进行了模拟分析，最终确定出不同壁龛尺寸对射流风机升压力和诱导段长度的影响。给出了射流风机壁龛式设计的建议尺寸。
关键词：地铁隧道,壁龛,射流风机,升压力,诱导长度,CFD模拟
Abstract：
At present, jet fan uses niche type in most underground railway tunnels. Simulates and analyses the jet performance under the different conditions of as many as forty-five sizes of niches and non-niche using CFD, and ultimately determines the effect of the different size of niches on rise pressure and induction length of the jet fan. Proposes the recommendated niche size for the design of the jet fan.
Keywords:underground railway tunnel, niche, jet fan, rise pressure, induction length, CFD simulation