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端壁SJA对压气机叶栅角区分离影响

郑维新 曾聪 陈绍文

郑维新, 曾聪, 陈绍文. 端壁SJA对压气机叶栅角区分离影响[J]. 航空动力学报, 2024, 39(8):20230563 doi: 10.13224/j.cnki.jasp.20230563
引用本文: 郑维新, 曾聪, 陈绍文. 端壁SJA对压气机叶栅角区分离影响[J]. 航空动力学报, 2024, 39(8):20230563 doi: 10.13224/j.cnki.jasp.20230563
ZHENG Weixin, ZENG Cong, CHEN Shaowen. Effect of endwall SJA on the corner separation of compressor cascade[J]. Journal of Aerospace Power, 2024, 39(8):20230563 doi: 10.13224/j.cnki.jasp.20230563
Citation: ZHENG Weixin, ZENG Cong, CHEN Shaowen. Effect of endwall SJA on the corner separation of compressor cascade[J]. Journal of Aerospace Power, 2024, 39(8):20230563 doi: 10.13224/j.cnki.jasp.20230563

端壁SJA对压气机叶栅角区分离影响

doi: 10.13224/j.cnki.jasp.20230563
基金项目: 航空科学基金(2023M039077001); 国家自然科学基金(U2233207)
详细信息
    作者简介:

    郑维新(1976-),男,高级工程师,主要从事燃气轮机/航空发动机设计研究。E-mail:zhengweixin1976@163.com

    通讯作者:

    陈绍文(1979-),男,教授,博士生,主要从事叶轮机械设计及流动控制研究。E-mail:cswemail@hit.edu.cn

  • 中图分类号: V231.3

Effect of endwall SJA on the corner separation of compressor cascade

  • 摘要:

    针对某型轴流压气机叶栅角区存在流动分离的问题,利用扫频射流激励器(SJA)主动流动控制技术,采用非定常数值计算方法对端壁SJA控制压气机平面叶栅角区分离的影响机理进行研究,分析和讨论了SJA位置布置、射流压比设定、射流偏角设定的影响规律和流场特性。研究结果表明:端壁SJA主要影响端壁和叶片表面附面层的发展和迁移,通过抑制集中脱落涡的生成与发展,以达到抑制角区分离、减小角区流动损失的目的;当SJA布置在轴向位置$ {x}_{\mathrm{S}\mathrm{J}\mathrm{A}} $/b=85%处、靠近吸力面时,降低流动损失的效果最佳;当SJA射流压比大约为1.01时,利用仅占主流0.03%的射流流量就可使得总压损失系数减小13.4%。此外,通过合理设计SJA射流偏角可有效改善端壁SJA存在的“扫掠盲点”问题,使得SJA控制效果得到进一步提高。

     

  • 图 1  数值计算模型图

    Figure 1.  Schematic diagram of the numerical model

    图 2  SJA端壁布置示意图

    Figure 2.  Schematic diagram of the SJA end wall arrangement

    图 3  网格划分示意图

    Figure 3.  Grid distribution

    图 4  不同网格时截面平均时均总压损失系数

    Figure 4.  Time-averaged total pressure loss coefficient averaged on the outlet section with different grids

    图 5  原型静叶片数值与试验结果对比

    Figure 5.  Comparison of original stator between numerical results and experimental results

    图 6  不同射流轴向位置下截面平均时均总压损失系数分布

    Figure 6.  Distribution of the time-averaged total pressure loss coefficient averaged on the outlet section at different axial positions of SJA

    图 7  不同射流轴向位置下节距平均总压损失系数沿叶高方向分布

    Figure 7.  Pitch-averaged total pressure loss coefficient distributionalong span at different axial positions of SJA

    图 8  不同射流轴向位置下时均总压损失系数云图

    Figure 8.  Time-averaged total pressure loss coefficient distribution at different axial positions of SJA

    图 9  不同射流轴向位置下静压系数沿叶高分布

    Figure 9.  Static pressure coefficient distribution along span at different axial positions of SJA

    图 10  不同射流轴向位置下吸力面及端壁表面极限流线

    Figure 10.  Distribution of limiting streamlines on the suction surface and end-wall surface at different axial positions of SJA

    图 11  不同射流轴向方案下的时均轴向速度

    Figure 11.  Time-averaged axial velocity at different axial positions of SJA

    图 12  SJA控制下不同时刻出口流场特性及损失分布

    Figure 12.  Flow field characteristics and loss distribution at different time points under SJA control

    图 13  不同周向位置下截面平均时均总压损失系数随射流压比的变化

    Figure 13.  Change of the time-averaged total pressure loss coefficient averaged on the outlet section with the jet pressure ratio at different circumferential positions

    图 14  不同轴向位置下截面平均时均总压损失系数随射流压比的变化

    Figure 14.  Change of the time-averaged total pressure loss coefficient averaged on the outlet section with the jet pressure ratio at different axial positions

    图 15  SJA在不同射流偏角时的流线图

    Figure 15.  Streamlines at different jet deflection angles

    图 16  不同射流偏角下截面平均时均总压损失系数随射流压比的变化

    Figure 16.  Change of the time-averaged total pressure loss coefficient averaged on the outlet section with the jet pressure ratio at different jet deflection angles

    图 17  不同射流偏角下时均总压损失系数云图沿轴向的分布

    Figure 17.  Time-averaged total pressure loss coefficient distribution at different jet deflection angles along the axis

    表  1  叶栅几何气动参数

    Table  1.   Geometric and aerodynamic parameters of the compressor cascade

    参数数值
    轴向弦长 b/mm117.3
    弦长 c/mm120
    叶片高度 H/mm160
    节距 t/mm74
    几何进气角 β1/(°)32.123
    几何出气角 β2/(°)7.877
    折转角 Δβ/(°)40
    安装角 γ/(°)12
    来流马赫数 Ma0.21
    下载: 导出CSV

    表  2  SJA主要几何参数

    Table  2.   Main geometric parameters of the SJA

    参数数值
    宽度 W/mm13.6
    长度 L/mm16
    高度 HSJA/mm1
    出口喉部宽度 w/mm2
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-09-04
  • 网络出版日期:  2024-05-28

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