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    Impact of Flow Rate on Turbopump Inducer Blade-to-Blade Interaction During Local Cavitation Instability

    Source: Journal of Fluids Engineering:;2025:;volume( 147 ):;issue: 008::page 81202-1
    Author:
    Yoon, Youngkuk
    ,
    Song, Seung Jin
    DOI: 10.1115/1.4068040
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: In turbopump inducers, cavitation on one blade can change incidence on the following blade, and this “blade-to-blade interaction” can lead to local cavitation instabilities such as alternate blade cavitation (ABC) and supersynchronous rotating cavitation. However, how the inducer operating condition (e.g., flow rate) affects the blade-to-blade interaction is still unknown. Therefore, for the first time, the dependence of blade-to-blade interaction on the inducer flow rate has been measured via fluorescent particle image velocimetry (fPIV) and high-speed visualization. The blade-to-blade interaction depends nonlinearly on the flow rate and is maximized at a certain flow rate, or certain incidence (αmax). At the flow rate corresponding to αmax, the cavity trailing edge on the leading blade is located near the inducer throat, and a sink-like flow is generated closest to the following blade’s leading edge, maximizing the blade-to-blade interaction. As the flow rate either increases or decreases from the flow rate corresponding to αmax, the trailing edge of the leading blade cavity moves farther away (upstream and downstream) from the inducer throat, weakening the blade-to-blade interaction.
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      Impact of Flow Rate on Turbopump Inducer Blade-to-Blade Interaction During Local Cavitation Instability

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    contributor authorYoon, Youngkuk
    contributor authorSong, Seung Jin
    date accessioned2025-08-20T09:43:03Z
    date available2025-08-20T09:43:03Z
    date copyright3/28/2025 12:00:00 AM
    date issued2025
    identifier issn0098-2202
    identifier otherfe_147_08_081202.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4308738
    description abstractIn turbopump inducers, cavitation on one blade can change incidence on the following blade, and this “blade-to-blade interaction” can lead to local cavitation instabilities such as alternate blade cavitation (ABC) and supersynchronous rotating cavitation. However, how the inducer operating condition (e.g., flow rate) affects the blade-to-blade interaction is still unknown. Therefore, for the first time, the dependence of blade-to-blade interaction on the inducer flow rate has been measured via fluorescent particle image velocimetry (fPIV) and high-speed visualization. The blade-to-blade interaction depends nonlinearly on the flow rate and is maximized at a certain flow rate, or certain incidence (αmax). At the flow rate corresponding to αmax, the cavity trailing edge on the leading blade is located near the inducer throat, and a sink-like flow is generated closest to the following blade’s leading edge, maximizing the blade-to-blade interaction. As the flow rate either increases or decreases from the flow rate corresponding to αmax, the trailing edge of the leading blade cavity moves farther away (upstream and downstream) from the inducer throat, weakening the blade-to-blade interaction.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleImpact of Flow Rate on Turbopump Inducer Blade-to-Blade Interaction During Local Cavitation Instability
    typeJournal Paper
    journal volume147
    journal issue8
    journal titleJournal of Fluids Engineering
    identifier doi10.1115/1.4068040
    journal fristpage81202-1
    journal lastpage81202-8
    page8
    treeJournal of Fluids Engineering:;2025:;volume( 147 ):;issue: 008
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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