Gated conduits involve high-velocity air–water flow. When studies on gated conduits are examined, it is determined that the air-demand ratio changes according to the hydraulic and geometric parameters. However, no study has investigated the effect of the cross-sectional geometry of high-head conduits with a sluice gate on the air-demand ratio. In this study, the effect of conduit cross-sectional geometry on the air-demand ratio is examined. Results indicate that a conduit's cross-sectional geometry has an important effect on the air-demand ratio, especially at 10% and 15% gate opening rates. It is seen that the effect of the conduit geometry on the air-demand ratio decreases at 20%, and for greater gate opening rates. Moreover, a formula for estimated the air-demand ratio is presented, relating the air-demand ratio to the gate opening rate, Froude number, hydraulic radius and conduit length.

中文翻译：

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带闸门管道几何形状对风需比影响的研究

门控管道涉及高速空气-水流。在检查门控管道的研究时，确定空气需求比根据水力和几何参数而变化。然而，没有研究调查带有闸门的高水头管道的横截面几何形状对空气需求比的影响。在这项研究中，检查了管道横截面几何形状对空气需求比的影响。结果表明，管道的横截面几何形状对空气需求比有重要影响，尤其是在 10% 和 15% 的闸门打开率下。可以看出，管道几何形状对空气需求比的影响在 20% 时下降，并且对于更大的闸门打开率。此外，提出了一个估计空气需求比的公式，将空气需求比与闸门打开率联系起来，