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Three-dimensional compressor blading design improvements in low-speed model testing

机译：低速模型测试中的三维压缩机叶片设计改进

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摘要

Low-speed model testing (LSMT) plays a key role in multistage axial-compressor design due to that utilizations of low-speed large-scale compressor to perform three-dimensional (3D) blading design are fast, convenient and cost-saving. This paper mainly focuses on numerical investigations of 3D blading improvements for LSMT with several design techniques. Firstly, numerical method is verified with existed experimental data. Then, revised techniques for both of the rotor and stator are presented, involving circumferential stacking principles, compressor blade row matching, loaded leading edge (LE) and unloaded trailing edge (TE), and bowed stator technology, et al. The flow mechanisms for these techniques are briefly discussed. The final revised scheme for the model stage (the 3rd stage) is determined with abovementioned methods. Flow loss near the hub are largely alleviated for the revised stage, the efficiency for the model stage and corresponding compressor are raised by 2.2% and 0.5% at design point, while stable operating range is slightly widen. (C) 2017 Elsevier Masson SAS. All rights reserved.
机译：低速模型测试（LSMT）在多级轴流压缩机设计中起着关键作用，这是因为利用低速大型压缩机执行三维（3D）叶片设计是快速，方便且节省成本的。本文主要关注采用几种设计技术对LSMT的3D叶片改进的数值研究。首先，利用已有的实验数据对数值方法进行了验证。然后，提出了针对转子和定子的修订技术，包括周向堆叠原理，压缩机叶片行匹配，负载前缘（LE）和负载后缘（TE）以及弓形定子技术等。简要讨论了这些技术的流动机制。通过上述方法确定模型阶段（第三阶段）的最终修订方案。在修订后的阶段，轮毂附近的流量损失大为减轻，模型阶段和相应压缩机的效率在设计点分别提高了2.2％和0.5％，同时稳定的工作范围略有扩大。 （C）2017 Elsevier Masson SAS。版权所有。

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  • 来源
    《Aerospace science and technology》 |2017年第4期|179-190|共12页
  • 作者

    Zhang Chenkai; Hu Jun; Li Jun; Wang Zhiqiang;

  • 作者单位

    China Acad Aerosp Aerodynam, Beijing, Peoples R China;

    Nanjing Univ Aeronaut & Astronaut, Coll Energy & Power Engn, Nanjing, Jiangsu, Peoples R China|Jiangsu Prov Key Lab Aerosp Power Syst, Nanjing, Jiangsu, Peoples R China|Coinnovat Ctr Adv Aeroengine, Beijing, Peoples R China;

    Nanjing Univ Aeronaut & Astronaut, Coll Energy & Power Engn, Nanjing, Jiangsu, Peoples R China|Jiangsu Prov Key Lab Aerosp Power Syst, Nanjing, Jiangsu, Peoples R China;

    Nanjing Univ Aeronaut & Astronaut, Coll Energy & Power Engn, Nanjing, Jiangsu, Peoples R China|Jiangsu Prov Key Lab Aerosp Power Syst, Nanjing, Jiangsu, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Axial flow compressors; Low-speed model testing; Blading improvement; 3D stacking; Loaded LE; Unloaded TE;

    机译：轴流压气机;低速模型测试;刮刀改进;3D堆叠;装满LE;装满TE;

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