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密度比对弯扭导叶扇形孔气膜冷却效率的影响

王晓增,  阚瑞,  刘存良

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文章导航 > 航空动力学报  > 2023 >  38(1): 70-78
王晓增, 阚瑞, 刘存良. 密度比对弯扭导叶扇形孔气膜冷却效率的影响[J]. 航空动力学报, 2023, 38（1）：70-78 doi: 10.13224/j.cnki.jasp.20220154
引用本文: 王晓增, 阚瑞, 刘存良. 密度比对弯扭导叶扇形孔气膜冷却效率的影响[J]. 航空动力学报, 2023, 38（1）：70-78 doi: 10.13224/j.cnki.jasp.20220154
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WANG Xiaozeng, KAN Rui, LIU Cunliang. Effect of density ratio on film cooling characteristics of a bowed and twisted turbine vane with fan-shaped film holes[J]. Journal of Aerospace Power, 2023, 38（1）：70-78 doi: 10.13224/j.cnki.jasp.20220154
Citation: WANG Xiaozeng, KAN Rui, LIU Cunliang. Effect of density ratio on film cooling characteristics of a bowed and twisted turbine vane with fan-shaped film holes[J]. Journal of Aerospace Power, 2023, 38（1）：70-78 doi: 10.13224/j.cnki.jasp.20220154
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密度比对弯扭导叶扇形孔气膜冷却效率的影响

doi: 10.13224/j.cnki.jasp.20220154
  • 1.

    中国航发商用航空发动机有限责任公司，上海 200241

  • 2.

    西北工业大学 动力与能源学院，西安 710072

详细信息
    作者简介:

    王晓增（1984-），男，高级工程师，硕士，主要从事叶轮机械气动热力学研究

  • 中图分类号: V231.1

Effect of density ratio on film cooling characteristics of a bowed and twisted turbine vane with fan-shaped film holes

  • 1.

    Commercial Aircraft Engine Company Limited， Aero Engine Corporation of China，Shanghai 200241，China

  • 2.

    School of Power and Energy，Northwestern Polytechnical University，Xi’an 710072，China

    摘要
  • 摘要:

    针对带扇形气膜孔的三维弯扭的高压涡轮一级导叶，采用压力敏感漆传质类比测量技术，研究了不同密度比与质量流量比下叶片的全表面气膜冷却效率分布特性。结果表明：叶片气膜冷却效率随密度比和质量流量比的增加而增大，冷气密度比从1.0增加到2.0时，叶片展向平均气膜冷却效率提升6%～32%。气膜冷却效率随密度比呈现非线性的变化，冷气密度比从1.0增加到1.5时，气膜冷却效率的增幅较小，密度比从1.5增加到2.0时，气膜冷却效率的增幅较大。

     

    Abstract:

    The influences of density ratio and mass flow ratio on the full coverage film cooling effectiveness of a bowed and twisted high pressure turbine 1st stage vane were studied experimentally in a fan-shaped cascade wind tunnel. The pressure sensitive paint technique was used to measure the film cooling effectiveness of the vane. Results showed that the film cooling effectiveness increased with increasing density ratio and mass flow ratio. When the density ratio increased from 1.0 to 2.0, the spanwise averaged film cooling effectiveness increased by 6% to 32%. The film cooling effectiveness only had a minor increase when the density ratio increased from 1.0 to 1.5. However, it had a great increase when the density ratio increased from 1.5 to 2.0, meaning that the relationship between film cooling effectiveness and density ratio was non-linear.

     

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  • 图 1  试验风洞系统

    Figure 1.  Experimental wind tunnel system

    下载: 全尺寸图片 幻灯片

    图 2  叶栅通道示意图（单位：mm）

    Figure 2.  Schematic of vane cascade （unit：mm）

    下载: 全尺寸图片 幻灯片

    图 3  静压测压孔位置

    Figure 3.  Static pressure hole positions

    下载: 全尺寸图片 幻灯片

    图 4  气膜孔布局示意图

    Figure 4.  Schematic of film hole position

    下载: 全尺寸图片 幻灯片

    图 5  试验叶片几何结构

    Figure 5.  Geometric structure of experimental vane

    下载: 全尺寸图片 幻灯片

    图 6  后倾扇形孔示意图

    Figure 6.  Schematic of laid-back-fan-shaped hole

    下载: 全尺寸图片 幻灯片

    图 7  PSP测量技术标定曲线

    Figure 7.  Calibration curves for PSP measurement technique

    下载: 全尺寸图片 幻灯片

    图 8  导叶中截面压力系数分布

    Figure 8.  Pressure coefficient distribution in midspan of vane

    下载: 全尺寸图片 幻灯片

    图 9  流量比对叶片气膜冷却趋势的影响

    Figure 9.  Effect of mass flow rate ratio on film cooling effectiveness of vane

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    图 10  流量比为8.92%工况下气膜冷却效率随密度比的变化

    Figure 10.  Film cooling effectiveness distributions at mass flow rate ratio of 8.92% under different density ratios

    下载: 全尺寸图片 幻灯片

    图 11  弯扭叶栅流线分布

    Figure 11.  Streamline distribution in twisted cascade

    下载: 全尺寸图片 幻灯片

    图 12  流量比为10.45%工况下气膜冷却效率随密度比的变化

    Figure 12.  Film cooling effectiveness distributions at mass flow rate ratio of 10.45% under different density ratios

    下载: 全尺寸图片 幻灯片

    图 13  密度比对展向平均气膜冷却效率的影响

    Figure 13.  Effects of density ratio on spanwise averaged film cooling effectiveness distributions

    下载: 全尺寸图片 幻灯片

    表  1  叶栅通道参数

    Table  1.   Vane cascade parameters

    参数数值
    弦长/mm203.5
    栅距/mm168
    进口角/（°）90
    出口角/（°）17.35
    下载: 导出CSV

    表  2  试验工况

    Table  2.   Experimental test conditions

    参数数值
    雷诺数120000
    密度比1, 1.5, 2.0
    湍流度/%12
    流量比/%8.92, 10.45
    下载: 导出CSV

    表  3  不同气膜冷却效率情况下的不确定度

    Table  3.   Uncertainty under different film cooling effectiveness conditions

    $ \eta $$ （\Delta \eta /\eta ） $/%
    0.0114.11
    0.056.24
    0.14.36
    0.32.38
    0.51.73
    0.71.36
    0.891.12
    下载: 导出CSV
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  • 收稿日期:  2022-03-26
  • 网络出版日期:  2022-12-11

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