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    A Limited Role of Separation Bubble in Desinent Cavitation

    Source: Journal of Fluids Engineering:;1985:;volume( 107 ):;issue: 001::page 121
    Author:
    Y. Ito
    ,
    R. Oba
    DOI: 10.1115/1.3242427
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: In order to clarify whether a separation bubble always plays an important role, the desinence of streamer-cavitation, a kind of attached-cavitation, was carefully investigated in typical internal flows through venturies with and without a 40 μm thin backward facing step under a prescribed cavitation nuclei as well as various hydrodynamic conditions. The following facts have been found: (i) the separation bubble can play an important role in the desinence only when the separation bubble thickness H is larger than the diameter of nucleus dnp that may grow up to a critical one [18], (ii) a marked change takes place in the desinent cavitation number σd due to the step, i.e., σd ≅ |Cps | for H > dnp but σd < |Cps | for H ≦ dnp , (iii) for the cavitation there are two geneses, i.e., the nuclei floating within the separation bubble and the bubble-cloud occurring in the reattachment-region.
    keyword(s): Cavitation , Bubbles , Separation (Technology) , Foundry coatings , Internal flow AND Thickness ,
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      A Limited Role of Separation Bubble in Desinent Cavitation

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    http://yetl.yabesh.ir/yetl1/handle/yetl/100069
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    • Journal of Fluids Engineering

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    contributor authorY. Ito
    contributor authorR. Oba
    date accessioned2017-05-08T23:20:37Z
    date available2017-05-08T23:20:37Z
    date copyrightMarch, 1985
    date issued1985
    identifier issn0098-2202
    identifier otherJFEGA4-27010#121_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/100069
    description abstractIn order to clarify whether a separation bubble always plays an important role, the desinence of streamer-cavitation, a kind of attached-cavitation, was carefully investigated in typical internal flows through venturies with and without a 40 μm thin backward facing step under a prescribed cavitation nuclei as well as various hydrodynamic conditions. The following facts have been found: (i) the separation bubble can play an important role in the desinence only when the separation bubble thickness H is larger than the diameter of nucleus dnp that may grow up to a critical one [18], (ii) a marked change takes place in the desinent cavitation number σd due to the step, i.e., σd ≅ |Cps | for H > dnp but σd < |Cps | for H ≦ dnp , (iii) for the cavitation there are two geneses, i.e., the nuclei floating within the separation bubble and the bubble-cloud occurring in the reattachment-region.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleA Limited Role of Separation Bubble in Desinent Cavitation
    typeJournal Paper
    journal volume107
    journal issue1
    journal titleJournal of Fluids Engineering
    identifier doi10.1115/1.3242427
    journal fristpage121
    journal lastpage125
    identifier eissn1528-901X
    keywordsCavitation
    keywordsBubbles
    keywordsSeparation (Technology)
    keywordsFoundry coatings
    keywordsInternal flow AND Thickness
    treeJournal of Fluids Engineering:;1985:;volume( 107 ):;issue: 001
    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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