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    The Effect of Rotor Casing on Low-Pressure Steam Turbine and Diffuser Interactions

    Source: Journal of Engineering for Gas Turbines and Power:;2017:;volume( 139 ):;issue: 002::page 22607
    Author:
    Singh, Gursharanjit
    ,
    Wheeler, Andrew P. S.
    ,
    Singh, Gurnam
    DOI: 10.1115/1.4034417
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The present study aims to investigate the interaction between a last-stage steam turbine blade row and diffuser. This work is carried out using computational fluid dynamics (CFD) simulations of a generic last-stage low-pressure (LP) turbine and axial–radial exhaust diffuser attached to it. In order to determine the validity of the computational method, the CFD predictions are first compared with data obtained from an experimental test facility. A computational study is then performed for different design configurations of the diffuser and rotor casing shapes. The study focuses on typical flow features such as effects of rotor tip leakage flows and subsequent changes in the rotor–diffuser interactions. The results suggest that the rotor casing shape influences the rotor work extraction capability and yields significant improvements in the diffuser static pressure recovery.
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      The Effect of Rotor Casing on Low-Pressure Steam Turbine and Diffuser Interactions

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4233621
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    contributor authorSingh, Gursharanjit
    contributor authorWheeler, Andrew P. S.
    contributor authorSingh, Gurnam
    date accessioned2017-11-25T07:15:41Z
    date available2017-11-25T07:15:41Z
    date copyright2016/20/9
    date issued2017
    identifier issn0742-4795
    identifier othergtp_139_02_022607.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4233621
    description abstractThe present study aims to investigate the interaction between a last-stage steam turbine blade row and diffuser. This work is carried out using computational fluid dynamics (CFD) simulations of a generic last-stage low-pressure (LP) turbine and axial–radial exhaust diffuser attached to it. In order to determine the validity of the computational method, the CFD predictions are first compared with data obtained from an experimental test facility. A computational study is then performed for different design configurations of the diffuser and rotor casing shapes. The study focuses on typical flow features such as effects of rotor tip leakage flows and subsequent changes in the rotor–diffuser interactions. The results suggest that the rotor casing shape influences the rotor work extraction capability and yields significant improvements in the diffuser static pressure recovery.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleThe Effect of Rotor Casing on Low-Pressure Steam Turbine and Diffuser Interactions
    typeJournal Paper
    journal volume139
    journal issue2
    journal titleJournal of Engineering for Gas Turbines and Power
    identifier doi10.1115/1.4034417
    journal fristpage22607
    journal lastpage022607-12
    treeJournal of Engineering for Gas Turbines and Power:;2017:;volume( 139 ):;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
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