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    Resolvent Analysis for Subsonic Compressor With Impedance Boundary Condition Casing Treatment

    Source: Journal of Turbomachinery:;2024:;volume( 147 ):;issue: 001::page 11006-1
    Author:
    Sun, Dakun
    ,
    Hu, Jiahao
    ,
    Xu, Ruize
    ,
    Li, Jia
    ,
    Dong, Xu
    ,
    Xu, Dengke
    ,
    Sun, Xiaofeng
    DOI: 10.1115/1.4066148
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: A resolvent analysis framework for the axial compressor is established, and the impedance optimization is achieved based on the resolvent analysis framework for the impedance boundary condition casing treatment. This framework is derived by treating the nonlinearity in the perturbation equations as an unknown forcing, the linear relationship between wall impedance and energy gains is obtained. The validity of this framework is confirmed through experiments on rotating inlet distortion, which captures the most susceptible frequency for the stall points of the compressor. The resolvent analysis framework further confirms that the first-order circumferential mode exhibits the highest energy in the given cases. Subsequently, the proposed impedance optimization method is tested under throttling operating conditions, especially focusing on the first-order circumferential mode. The introduction of a favorable impedance boundary condition notably reduces energy gain within the low-order circumferential mode and in the range of the rotor rotating frequency, particularly in near-stall operating conditions. The energy suppression mechanism of the impedance boundary condition casing treatment is investigated, demonstrating that the impedance boundary condition, with an optimal impedance value, significantly suppresses perturbations compared to the case with the solid wall boundary condition. Lastly, a design method for the impedance boundary condition casing treatment is discussed, offering a reliable theoretical design tool for enhancing the stall margin of axial compressors.
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      Resolvent Analysis for Subsonic Compressor With Impedance Boundary Condition Casing Treatment

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4305619
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    contributor authorSun, Dakun
    contributor authorHu, Jiahao
    contributor authorXu, Ruize
    contributor authorLi, Jia
    contributor authorDong, Xu
    contributor authorXu, Dengke
    contributor authorSun, Xiaofeng
    date accessioned2025-04-21T10:09:43Z
    date available2025-04-21T10:09:43Z
    date copyright9/3/2024 12:00:00 AM
    date issued2024
    identifier issn0889-504X
    identifier otherturbo_147_1_011006.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4305619
    description abstractA resolvent analysis framework for the axial compressor is established, and the impedance optimization is achieved based on the resolvent analysis framework for the impedance boundary condition casing treatment. This framework is derived by treating the nonlinearity in the perturbation equations as an unknown forcing, the linear relationship between wall impedance and energy gains is obtained. The validity of this framework is confirmed through experiments on rotating inlet distortion, which captures the most susceptible frequency for the stall points of the compressor. The resolvent analysis framework further confirms that the first-order circumferential mode exhibits the highest energy in the given cases. Subsequently, the proposed impedance optimization method is tested under throttling operating conditions, especially focusing on the first-order circumferential mode. The introduction of a favorable impedance boundary condition notably reduces energy gain within the low-order circumferential mode and in the range of the rotor rotating frequency, particularly in near-stall operating conditions. The energy suppression mechanism of the impedance boundary condition casing treatment is investigated, demonstrating that the impedance boundary condition, with an optimal impedance value, significantly suppresses perturbations compared to the case with the solid wall boundary condition. Lastly, a design method for the impedance boundary condition casing treatment is discussed, offering a reliable theoretical design tool for enhancing the stall margin of axial compressors.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleResolvent Analysis for Subsonic Compressor With Impedance Boundary Condition Casing Treatment
    typeJournal Paper
    journal volume147
    journal issue1
    journal titleJournal of Turbomachinery
    identifier doi10.1115/1.4066148
    journal fristpage11006-1
    journal lastpage11006-17
    page17
    treeJournal of Turbomachinery:;2024:;volume( 147 ):;issue: 001
    contenttypeFulltext
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