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    An Aerodynamic Loss Model for Axial Turbine Design

    Source: Journal of Turbomachinery:;2023:;volume( 145 ):;issue: 009::page 91011-1
    Author:
    Li, Zhi
    ,
    Liu, Yan
    DOI: 10.1115/1.4062804
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Aerodynamic loss models play an important role in the preliminary design of axial turbines. However, prediction accuracy and parameter sensitivity of traditional models being used for decades are problematic. Thus, this paper proposed a new loss model for predicting turbine aerodynamic performance at the design point. In order to construct the model, 228 turbine cascades for calibration were designed and evaluated by computational fluid dynamics (CFD). Based on massive CFD data, correlation of parameters and loss coefficients were investigated. Finally, new loss model expressions were built. The accuracy of the proposed novel model was verified by CFD for nine turbines including 15 stages. Numerical results show that the average efficiency deviation for the new model is 0.48% for stages and 0.009 for entropy loss coefficient of the blade rows. Compared with the Craig and Cox model and Kacker and Okapuu model, the presented new model performs better in predicting aerodynamic loss, especially in predicting the effect of parameters on the losses.
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      An Aerodynamic Loss Model for Axial Turbine Design

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4295045
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    contributor authorLi, Zhi
    contributor authorLiu, Yan
    date accessioned2023-11-29T19:48:40Z
    date available2023-11-29T19:48:40Z
    date copyright7/27/2023 12:00:00 AM
    date issued7/27/2023 12:00:00 AM
    date issued2023-07-27
    identifier issn0889-504X
    identifier otherturbo_145_9_091011.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4295045
    description abstractAerodynamic loss models play an important role in the preliminary design of axial turbines. However, prediction accuracy and parameter sensitivity of traditional models being used for decades are problematic. Thus, this paper proposed a new loss model for predicting turbine aerodynamic performance at the design point. In order to construct the model, 228 turbine cascades for calibration were designed and evaluated by computational fluid dynamics (CFD). Based on massive CFD data, correlation of parameters and loss coefficients were investigated. Finally, new loss model expressions were built. The accuracy of the proposed novel model was verified by CFD for nine turbines including 15 stages. Numerical results show that the average efficiency deviation for the new model is 0.48% for stages and 0.009 for entropy loss coefficient of the blade rows. Compared with the Craig and Cox model and Kacker and Okapuu model, the presented new model performs better in predicting aerodynamic loss, especially in predicting the effect of parameters on the losses.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleAn Aerodynamic Loss Model for Axial Turbine Design
    typeJournal Paper
    journal volume145
    journal issue9
    journal titleJournal of Turbomachinery
    identifier doi10.1115/1.4062804
    journal fristpage91011-1
    journal lastpage91011-9
    page9
    treeJournal of Turbomachinery:;2023:;volume( 145 ):;issue: 009
    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