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    Accurate Prediction of Loss Using High Fidelity Methods

    Source: Journal of Turbomachinery:;2021:;volume( 143 ):;issue: 003::page 031008-1
    Author:
    Przytarski, Pawel J.
    ,
    Wheeler, Andrew P. S.
    DOI: 10.1115/1.4050115
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Further improvements in aero-engine efficiencies require accurate prediction of flow physics and incurred loss. Currently, the computational requirements for capturing these are not known leading to inconsistent loss predictions even for scale-resolving simulations depending on the chosen convergence criteria. This work investigates two aspects of loss generation using high-fidelity simulation. In the first case study, we look at the effect of resolution on capturing entropy generation rate by simulating a Taylor-Green vortex canonical flow. The second case study focuses on the effect of resolution on flow physics and loss generation and uses a compressor cascade subjected to freestream turbulence. The results show that both resolving local entropy generation rate and capturing the inception and growth of instabilities are critical to accuracy of loss prediction. In particular, the interaction of free-stream turbulence at the leading-edge and development of instabilities in the laminar region of the boundary layer are critical to capturing loss.
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      Accurate Prediction of Loss Using High Fidelity Methods

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4276966
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    contributor authorPrzytarski, Pawel J.
    contributor authorWheeler, Andrew P. S.
    date accessioned2022-02-05T22:07:40Z
    date available2022-02-05T22:07:40Z
    date copyright3/1/2021 12:00:00 AM
    date issued2021
    identifier issn0889-504X
    identifier otherturbo_143_3_031008.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4276966
    description abstractFurther improvements in aero-engine efficiencies require accurate prediction of flow physics and incurred loss. Currently, the computational requirements for capturing these are not known leading to inconsistent loss predictions even for scale-resolving simulations depending on the chosen convergence criteria. This work investigates two aspects of loss generation using high-fidelity simulation. In the first case study, we look at the effect of resolution on capturing entropy generation rate by simulating a Taylor-Green vortex canonical flow. The second case study focuses on the effect of resolution on flow physics and loss generation and uses a compressor cascade subjected to freestream turbulence. The results show that both resolving local entropy generation rate and capturing the inception and growth of instabilities are critical to accuracy of loss prediction. In particular, the interaction of free-stream turbulence at the leading-edge and development of instabilities in the laminar region of the boundary layer are critical to capturing loss.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleAccurate Prediction of Loss Using High Fidelity Methods
    typeJournal Paper
    journal volume143
    journal issue3
    journal titleJournal of Turbomachinery
    identifier doi10.1115/1.4050115
    journal fristpage031008-1
    journal lastpage031008-9
    page9
    treeJournal of Turbomachinery:;2021:;volume( 143 ):;issue: 003
    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