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路隧道采用射流风机作纵向式通风时;射流风机悬挂在拱顶或壁龛内,由于墙面的摩擦阻力和壁龛阻力将使射流的动量减少。本文论述了周围空气为静止状态下的各种试验结果,这些结果表明各种不同参数对射流动量损失的影响。
Road tunnels use jet fans for longitudinal ventilation; jet fans hang in vaults or niches that reduce the momentum of the jet due to wall friction and niche resistance. In this paper, various experimental results of the ambient air at rest are presented, and the results show the influence of various parameters on the loss of jet momentum.