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Effects of inlet guide-vane number on flowfields in a side-dump combustor

机译:进气口导叶数对侧卸式燃烧室流场的影响

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The flowfields of a side-dump combustor with various number of side-inlet guide-vane are measured using laser-Doppler velocimetry (LDV). The Reynolds number based on the bulk mean velocity and combustor diameter was 2.6 x 10(4). Quantities such as mean velocity, turbulence intensity, turbulent kinetic energy, vorticity, friction factor, and wall static pressure oscillation are used to characterize the fluid flow. In the dome region of the inlet-jet plane, there is one pair of counter-rotating vortices for the no-vane, one-vane, and two-vane cases and two pairs of counter-rotating vortices for the three-vane case, respectively. This trend is reversed in the impinging plane. The combustor flowfield downstream of the X-c(*) = 2.5 station is found to be insensitive to the variation of inlet guide-vane number. In addition, the guide-vane number which provides the least pressure loss and the lowest pressure oscillation is identified for the first time. Based on the presented data, a better guide-vane number for practical reference is suggested. (C) 2001 Elsevier Science Inc. All rights reserved. [References: 22]
机译:使用激光多普勒测速仪(LDV)测量带有多个侧入口导流叶片的侧倾式燃烧室的流场。基于体积平均速度和燃烧室直径的雷诺数为2.6 x 10(4)。使用诸如平均速度,湍流强度,湍动能,涡度,摩擦因数和壁静压力振荡之类的量来表征流体流动。在进气口平面的圆顶区域中,有一对用于无叶片,单叶片和两叶片壳体的反向旋涡,以及一对用于三叶片壳体的反向旋涡,分别。这种趋势在撞击平面上被逆转。发现X-c(*)= 2.5站下游的燃烧室流场对入口导叶数的变化不敏感。此外,首次确定了提供最小压力损失和最小压力波动的导叶编号。根据给出的数据,建议使用更好的导向叶片编号,以供实际参考。 (C)2001 Elsevier Science Inc.保留所有权利。 [参考:22]

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