涡扇发动机风扇管道声模态识别测量方法
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V231.3

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中国-欧盟航空科技合作项目合作项目


Research on In-duct Acoustic Mode Identification Measurement Method of Turbofan Engine
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China-EU aviation technology cooperation program

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    摘要:

    旋转声模态的测试识别是发动机管道声学研究的重要基础。通过对管道声传播机理和测试识别方法的分析研究,发展了基于旋转径向传声器阵列的声模态识别方法和测试装置。应用旋转声模态发生试验平台开展声模态识别验证试验,结果表明,该测量方法能够以较少数量的传声器识别管道内的周向和径向声模态;利用不同测试方法分析得出的声场结果相互吻合,进一步证明了该方法的适用性。

    Abstract:

    Spinning mode measurement is an important basis for researching on in-duct acoustics of turbofan engine. The identification decomposition method and test measuring device based on rotating radial microphones array were developed by analyzing the acoustic propagation mechanism and test technology. To verify the method, the acoustic measurement tests were conduct by applying the test platform of the spinning mode synthesizer. The test results indicated that the method can identify the circumferential and radial acoustic modes with a small number of microphones. The results decomposed by three different measuring methods were consistent, showing good applicability of the method.

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高翔,薛东文,燕群,等. 涡扇发动机风扇管道声模态识别测量方法[J]. 科学技术与工程, 2020, 20(19): 7941-7946.
Gao Xiang, Xue Dongwen, Yan Qun, et al. Research on In-duct Acoustic Mode Identification Measurement Method of Turbofan Engine[J]. Science Technology and Engineering,2020,20(19):7941-7946.

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历史
  • 收稿日期:2019-08-23
  • 最后修改日期:2020-03-02
  • 录用日期:2020-01-11
  • 在线发布日期: 2020-07-28
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