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    Influence of Propagation Velocity and Peak Pressure of the Rotating Pressure Wave on the Flow Characteristics of a Centrifugal Compressor

    Source: Journal of Turbomachinery:;2025:;volume( 147 ):;issue: 009::page 91013-1
    Author:
    Xia, Yiqing
    ,
    Wu, Yuwen
    ,
    Weng, Chunsheng
    ,
    Li, Qun
    ,
    Nie, Jiayi
    DOI: 10.1115/1.4067635
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Rotating detonation turbine engine represents an innovative advancement in the state-of-art gas turbines. When a rotating detonation combustor is coupled with turbomachinery, the rotating detonation wave propagates upstream toward the compressor, affecting its aerodynamic and overall performance. In the present study, a three-dimensional numerical simulation is carried out to study the flow characteristics of a centrifugal compressor with the presence of a rotating pressure wave (RPW) at the outlet based on the unsteady Reynolds-Averaged Navier−Stokes method. Effects of RPW propagation velocity and peak pressure are investigated. The results showed that the rotating pressure wave forms a forward propagating wave (FPW) in the compressor, interacting with the diffuser and impeller blades. In the diffuser, the peak pressure of the FPW initially decreases with a slight recovery. It then decreases rapidly in the impeller. Effects of FPW are distinct from those of the unsteady rotor−stator interaction. A decrease in the propagation velocity enhances the strength of FPW passing through the diffuser channel while lowering the peak pressure mitigates the influence of FPW on the compressor flow field. The FPW leads to the decline of the mass flowrate and the rise of the total pressure ratio. While the mass flowrate and efficiency rise with the increase of propagation velocity, the peak pressure decreases. The isentropic efficiency can increase by up to 2.8% under high propagation velocity and low peak pressure conditions.
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      Influence of Propagation Velocity and Peak Pressure of the Rotating Pressure Wave on the Flow Characteristics of a Centrifugal Compressor

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4305701
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    contributor authorXia, Yiqing
    contributor authorWu, Yuwen
    contributor authorWeng, Chunsheng
    contributor authorLi, Qun
    contributor authorNie, Jiayi
    date accessioned2025-04-21T10:12:09Z
    date available2025-04-21T10:12:09Z
    date copyright2/17/2025 12:00:00 AM
    date issued2025
    identifier issn0889-504X
    identifier otherturbo-24-1011.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4305701
    description abstractRotating detonation turbine engine represents an innovative advancement in the state-of-art gas turbines. When a rotating detonation combustor is coupled with turbomachinery, the rotating detonation wave propagates upstream toward the compressor, affecting its aerodynamic and overall performance. In the present study, a three-dimensional numerical simulation is carried out to study the flow characteristics of a centrifugal compressor with the presence of a rotating pressure wave (RPW) at the outlet based on the unsteady Reynolds-Averaged Navier−Stokes method. Effects of RPW propagation velocity and peak pressure are investigated. The results showed that the rotating pressure wave forms a forward propagating wave (FPW) in the compressor, interacting with the diffuser and impeller blades. In the diffuser, the peak pressure of the FPW initially decreases with a slight recovery. It then decreases rapidly in the impeller. Effects of FPW are distinct from those of the unsteady rotor−stator interaction. A decrease in the propagation velocity enhances the strength of FPW passing through the diffuser channel while lowering the peak pressure mitigates the influence of FPW on the compressor flow field. The FPW leads to the decline of the mass flowrate and the rise of the total pressure ratio. While the mass flowrate and efficiency rise with the increase of propagation velocity, the peak pressure decreases. The isentropic efficiency can increase by up to 2.8% under high propagation velocity and low peak pressure conditions.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleInfluence of Propagation Velocity and Peak Pressure of the Rotating Pressure Wave on the Flow Characteristics of a Centrifugal Compressor
    typeJournal Paper
    journal volume147
    journal issue9
    journal titleJournal of Turbomachinery
    identifier doi10.1115/1.4067635
    journal fristpage91013-1
    journal lastpage91013-45
    page45
    treeJournal of Turbomachinery:;2025:;volume( 147 ):;issue: 009
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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