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反旋腰圆形鼓筒孔腔体内旋涡破碎机制与压损特性

沈文杰 王锁芳 张馨丹

沈文杰, 王锁芳, 张馨丹. 反旋腰圆形鼓筒孔腔体内旋涡破碎机制与压损特性[J]. 航空动力学报, 2024, 39(8):20220075 doi: 10.13224/j.cnki.jasp.20220075
引用本文: 沈文杰, 王锁芳, 张馨丹. 反旋腰圆形鼓筒孔腔体内旋涡破碎机制与压损特性[J]. 航空动力学报, 2024, 39(8):20220075 doi: 10.13224/j.cnki.jasp.20220075
SHEN Wenjie, WANG Suofang, ZHANG Xindan. Research on the vortex breakdown and pressure loss characteristics in the cavity with anti-swirling waist circular drum hole[J]. Journal of Aerospace Power, 2024, 39(8):20220075 doi: 10.13224/j.cnki.jasp.20220075
Citation: SHEN Wenjie, WANG Suofang, ZHANG Xindan. Research on the vortex breakdown and pressure loss characteristics in the cavity with anti-swirling waist circular drum hole[J]. Journal of Aerospace Power, 2024, 39(8):20220075 doi: 10.13224/j.cnki.jasp.20220075

反旋腰圆形鼓筒孔腔体内旋涡破碎机制与压损特性

doi: 10.13224/j.cnki.jasp.20220075
基金项目: 国家科技重大专项(2017-Ⅲ-0011-0037)
详细信息
    作者简介:

    沈文杰(1998-),男,博士生,研究领域为航空发动机流动与冷却

    通讯作者:

    王锁芳(1962-),男,教授、博士生导师,博士,研究领域为航空发动机流动与冷却。E-mail:sfwang@nuaa.edu.cn

  • 中图分类号: V231.1

Research on the vortex breakdown and pressure loss characteristics in the cavity with anti-swirling waist circular drum hole

  • 摘要:

    为降低压气机径向引气过程中的压损,本文设计了反旋腰圆形鼓筒孔结构,采用大涡模拟(LES)和经验证的RNG k-ε模型分别探究了腔体内的旋涡演化规律和压损特性,揭示了反旋腰圆形鼓筒孔的旋涡破碎机制与减阻机理。结果表明:反旋腰圆形鼓筒孔可降低腔体内压损。高速旋涡在腰圆形鼓筒孔腔体的低径位区域内快速强化,旋涡尺度呈快速增大趋势,致使压损系数随径向高度降低而快速升高。与腰圆形鼓筒孔相比,反旋腰圆形鼓筒孔可有效抑制旋涡尺度增大,相对可降低腔体内15.6%的压损。反旋腰圆形鼓筒孔结构简单且引气过程呈线性状态,具有较高工程应用价值。

     

  • 图 1  共转腔体示意图

    Figure 1.  Schematic diagram of co-rotating cavity

    图 2  鼓筒孔示意图

    Figure 2.  Schematic diagram of drum holes

    图 3  网格示意图

    Figure 3.  Schematic of the grid

    图 4  网格独立性验证

    Figure 4.  Validation of grid independence

    图 5  模型验证

    Figure 5.  Validation of model

    图 6  腔体内亚格子活性参数的分布

    Figure 6.  Distribution of subgrid-activity parameter in the cavity

    图 7  流线与熵

    Figure 7.  Streamlines and Entropy

    图 8  旋流比云图

    Figure 8.  Cloud map of swirl ratio

    图 9  相干结构

    Figure 9.  Coherent structure

    图 10  功率谱

    Figure 10.  Power spectrum

    图 11  能量积分尺度

    Figure 11.  Energy integral length scale

    图 12  径向上压损系数的分布

    Figure 12.  Pressure loss coefficient along radial direction

    图 13  不同无量纲流量下压损的变化规律

    Figure 13.  Variation law of pressure loss under different dimensionless mass flow rates

    图 14  不同区间内压损占比对比

    Figure 14.  Comparison of pressure loss in different intervals

    表  1  无量纲尺寸参数

    Table  1.   Dimensionless dimension parameters

    参数数值
    a/c0.329
    b/c0.933
    S/c0.243
    d1/c0.029
    d2/c0.019
    r/c0.014
    下载: 导出CSV

    表  2  质量流量的影响

    Table  2.   Influence of mass flow rate

    参数 数值
    质量流量/(kg/s) 0.225,0.375,0.525,0.675,0.825,
    0.975,1.125,1.275,1.425
    转速/(r/min) 16000
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-02-21
  • 网络出版日期:  2024-03-27

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