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    Aerodynamic Design of High End Wall Angle Turbine Stages—Part II: Experimental Verification

    Source: Journal of Turbomachinery:;2014:;volume( 136 ):;issue: 002::page 21007
    Author:
    Cranstone, A. W.
    ,
    Pullan, G.
    ,
    Curtis, E. M.
    ,
    Bather, S.
    DOI: 10.1115/1.4023906
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: An experimental investigation of a turbine stage featuring very high end wall angles is presented. The initial turbine design did not achieve a satisfactory performance and the difference between the design predictions and the test results was traced to a large separated region on the rear suctionsurface. To improve the agreement between computational fluid dynamics (CFD) and experiment, it was found necessary to modify the turbulence modeling employed. The modified CFD code was then used to redesign the vane, and the changes made are described. When tested, the performance of the redesigned vane was found to have much closer agreement with the predictions than the initial vane. Finally, the flowfield and performance of the redesigned stage are compared to a similar turbine, designed to perform the same duty, which lies in an annulus of moderate end wall angles. A reduction in stage efficiency of at least 2.4% was estimated for the very high end wall angle design.
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      Aerodynamic Design of High End Wall Angle Turbine Stages—Part II: Experimental Verification

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/156551
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    contributor authorCranstone, A. W.
    contributor authorPullan, G.
    contributor authorCurtis, E. M.
    contributor authorBather, S.
    date accessioned2017-05-09T01:13:23Z
    date available2017-05-09T01:13:23Z
    date issued2014
    identifier issn0889-504X
    identifier otherturbo_136_02_021007.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/156551
    description abstractAn experimental investigation of a turbine stage featuring very high end wall angles is presented. The initial turbine design did not achieve a satisfactory performance and the difference between the design predictions and the test results was traced to a large separated region on the rear suctionsurface. To improve the agreement between computational fluid dynamics (CFD) and experiment, it was found necessary to modify the turbulence modeling employed. The modified CFD code was then used to redesign the vane, and the changes made are described. When tested, the performance of the redesigned vane was found to have much closer agreement with the predictions than the initial vane. Finally, the flowfield and performance of the redesigned stage are compared to a similar turbine, designed to perform the same duty, which lies in an annulus of moderate end wall angles. A reduction in stage efficiency of at least 2.4% was estimated for the very high end wall angle design.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleAerodynamic Design of High End Wall Angle Turbine Stages—Part II: Experimental Verification
    typeJournal Paper
    journal volume136
    journal issue2
    journal titleJournal of Turbomachinery
    identifier doi10.1115/1.4023906
    journal fristpage21007
    journal lastpage21007
    identifier eissn1528-8900
    treeJournal of Turbomachinery:;2014:;volume( 136 ):;issue: 002
    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
    yabeshDSpacePersian