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    A Nonlinear Calculation of Rotating Cavitation in Inducers

    Source: Journal of Fluids Engineering:;1996:;volume( 118 ):;issue: 003::page 589
    Author:
    Y. Tsujimoto
    ,
    S. Watanabe
    ,
    K. Kamijo
    ,
    Y. Yoshida
    DOI: 10.1115/1.2817799
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: In the previous linear analysis (Tsujimoto et al., 1993) it was found that there can be a backward rotating cavitation as well as a forward mode which rotates faster than impeller. Although some shaft vibration has been observed, which might be caused by the backward mode, experimental evidence has been obtained only for the forward mode. The purpose of the present study is to find out the factors which determine the amplitude of each mode of rotating cavitation by taking into account several nonlinearities. A time marching nonlinear 2-D flow analysis was carried out for this purpose. It was found that the increase of cavitation compliance at lower inlet pressure can be a factor which limits the amplitude. The mode selectivity is mainly dependent on the stability limit obtained by a linear analysis for which the phase delay of cavity has a most important effect.
    keyword(s): Cavitation , Vibration , Cavities , Delays , Pressure , Stability , Flow (Dynamics) AND Impellers ,
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      A Nonlinear Calculation of Rotating Cavitation in Inducers

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/117161
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    • Journal of Fluids Engineering

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    contributor authorY. Tsujimoto
    contributor authorS. Watanabe
    contributor authorK. Kamijo
    contributor authorY. Yoshida
    date accessioned2017-05-08T23:50:34Z
    date available2017-05-08T23:50:34Z
    date copyrightSeptember, 1996
    date issued1996
    identifier issn0098-2202
    identifier otherJFEGA4-27108#589_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/117161
    description abstractIn the previous linear analysis (Tsujimoto et al., 1993) it was found that there can be a backward rotating cavitation as well as a forward mode which rotates faster than impeller. Although some shaft vibration has been observed, which might be caused by the backward mode, experimental evidence has been obtained only for the forward mode. The purpose of the present study is to find out the factors which determine the amplitude of each mode of rotating cavitation by taking into account several nonlinearities. A time marching nonlinear 2-D flow analysis was carried out for this purpose. It was found that the increase of cavitation compliance at lower inlet pressure can be a factor which limits the amplitude. The mode selectivity is mainly dependent on the stability limit obtained by a linear analysis for which the phase delay of cavity has a most important effect.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleA Nonlinear Calculation of Rotating Cavitation in Inducers
    typeJournal Paper
    journal volume118
    journal issue3
    journal titleJournal of Fluids Engineering
    identifier doi10.1115/1.2817799
    journal fristpage589
    journal lastpage594
    identifier eissn1528-901X
    keywordsCavitation
    keywordsVibration
    keywordsCavities
    keywordsDelays
    keywordsPressure
    keywordsStability
    keywordsFlow (Dynamics) AND Impellers
    treeJournal of Fluids Engineering:;1996:;volume( 118 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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