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    Numerical Investigation of a Transonic Centrifugal Compressor

    Source: Journal of Turbomachinery:;2008:;volume( 130 ):;issue: 001::page 11010
    Author:
    Michele Marconcini
    ,
    Seiichi Ibaraki
    ,
    Filippo Rubechini
    ,
    Andrea Arnone
    DOI: 10.1115/1.2752186
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: A three-dimensional Navier-Stokes solver is used to investigate the flow field of a high-pressure ratio centrifugal compressor for turbocharger applications. Such a compressor consists of a double-splitter impeller followed by a vaned diffuser. The inlet flow to the open shrouded impeller is transonic, thus giving rise to interactions between shock waves and boundary layers and between shock waves and tip leakage vortices. These interactions generate complex flow structures which are convected and distorted through the impeller blades. Detailed laser Doppler velocimetry flow measurements are available at various cross sections inside the impeller blades highlighting the presence of low-velocity flow regions near the shroud. Particular attention is focused on understanding the physical mechanisms which govern the flow phenomena in the near shroud region. To this end numerical investigations are performed using different tip clearance modelizations and various turbulence models, and their impact on the computed flow field is discussed.
    keyword(s): Flow (Dynamics) , Turbulence , Compressors , Impellers , Clearances (Engineering) , Blades , Shock waves , Leakage , Vortices , Diffusers , Cross section (Physics) AND Mechanisms ,
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      Numerical Investigation of a Transonic Centrifugal Compressor

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/139537
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    contributor authorMichele Marconcini
    contributor authorSeiichi Ibaraki
    contributor authorFilippo Rubechini
    contributor authorAndrea Arnone
    date accessioned2017-05-09T00:30:55Z
    date available2017-05-09T00:30:55Z
    date copyrightJanuary, 2008
    date issued2008
    identifier issn0889-504X
    identifier otherJOTUEI-28743#011010_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/139537
    description abstractA three-dimensional Navier-Stokes solver is used to investigate the flow field of a high-pressure ratio centrifugal compressor for turbocharger applications. Such a compressor consists of a double-splitter impeller followed by a vaned diffuser. The inlet flow to the open shrouded impeller is transonic, thus giving rise to interactions between shock waves and boundary layers and between shock waves and tip leakage vortices. These interactions generate complex flow structures which are convected and distorted through the impeller blades. Detailed laser Doppler velocimetry flow measurements are available at various cross sections inside the impeller blades highlighting the presence of low-velocity flow regions near the shroud. Particular attention is focused on understanding the physical mechanisms which govern the flow phenomena in the near shroud region. To this end numerical investigations are performed using different tip clearance modelizations and various turbulence models, and their impact on the computed flow field is discussed.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleNumerical Investigation of a Transonic Centrifugal Compressor
    typeJournal Paper
    journal volume130
    journal issue1
    journal titleJournal of Turbomachinery
    identifier doi10.1115/1.2752186
    journal fristpage11010
    identifier eissn1528-8900
    keywordsFlow (Dynamics)
    keywordsTurbulence
    keywordsCompressors
    keywordsImpellers
    keywordsClearances (Engineering)
    keywordsBlades
    keywordsShock waves
    keywordsLeakage
    keywordsVortices
    keywordsDiffusers
    keywordsCross section (Physics) AND Mechanisms
    treeJournal of Turbomachinery:;2008:;volume( 130 ):;issue: 001
    contenttypeFulltext
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