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    Measurements and Predictions of Heat Transfer on Rotor Blades in a Transonic Turbine Cascade

    Source: Journal of Turbomachinery:;2004:;volume( 126 ):;issue: 001::page 110
    Author:
    Paul W. Giel
    ,
    Robert J. Boyle
    ,
    Ronald S. Bunker
    DOI: 10.1115/1.1643383
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Detailed heat transfer measurements and predictions are given for a power generation turbine rotor with 127 deg of nominal turning and an axial chord of 130 mm. Data were obtained for a set of four exit Reynolds numbers comprised of the facility maximum point of 2.50×106, as well as conditions which represent 50%, 25%, and 15% of this maximum condition. Three ideal exit pressure ratios were examined including the design point of 1.443, as well as conditions which represent −25% and +20% of the design value. Three inlet flow angles were examined including the design point and ±5 deg off-design angles. Measurements were made in a linear cascade with highly three-dimensional blade passage flows that resulted from the high flow turning and thick inlet boundary layers. Inlet turbulence was generated with a blown square bar grid. The purpose of the work is the extension of three-dimensional predictive modeling capability for airfoil external heat transfer to engine specific conditions including blade shape, Reynolds numbers, and Mach numbers. Data were obtained by a steady-state technique using a thin-foil heater wrapped around a low thermal conductivity blade. Surface temperatures were measured using calibrated liquid crystals. The results show the effects of strong secondary vortical flows, laminar-to-turbulent transition, and also show good detail in the stagnation region.
    keyword(s): Pressure , Flow (Dynamics) , Heat transfer , Measurement , Turbulence , Reynolds number , Blades , Design , Cascades (Fluid dynamics) , Suction , Rotors AND Turbines ,
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      Measurements and Predictions of Heat Transfer on Rotor Blades in a Transonic Turbine Cascade

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/131008
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    • Journal of Turbomachinery

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    contributor authorPaul W. Giel
    contributor authorRobert J. Boyle
    contributor authorRonald S. Bunker
    date accessioned2017-05-09T00:14:43Z
    date available2017-05-09T00:14:43Z
    date copyrightJanuary, 2004
    date issued2004
    identifier issn0889-504X
    identifier otherJOTUEI-28708#110_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/131008
    description abstractDetailed heat transfer measurements and predictions are given for a power generation turbine rotor with 127 deg of nominal turning and an axial chord of 130 mm. Data were obtained for a set of four exit Reynolds numbers comprised of the facility maximum point of 2.50×106, as well as conditions which represent 50%, 25%, and 15% of this maximum condition. Three ideal exit pressure ratios were examined including the design point of 1.443, as well as conditions which represent −25% and +20% of the design value. Three inlet flow angles were examined including the design point and ±5 deg off-design angles. Measurements were made in a linear cascade with highly three-dimensional blade passage flows that resulted from the high flow turning and thick inlet boundary layers. Inlet turbulence was generated with a blown square bar grid. The purpose of the work is the extension of three-dimensional predictive modeling capability for airfoil external heat transfer to engine specific conditions including blade shape, Reynolds numbers, and Mach numbers. Data were obtained by a steady-state technique using a thin-foil heater wrapped around a low thermal conductivity blade. Surface temperatures were measured using calibrated liquid crystals. The results show the effects of strong secondary vortical flows, laminar-to-turbulent transition, and also show good detail in the stagnation region.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleMeasurements and Predictions of Heat Transfer on Rotor Blades in a Transonic Turbine Cascade
    typeJournal Paper
    journal volume126
    journal issue1
    journal titleJournal of Turbomachinery
    identifier doi10.1115/1.1643383
    journal fristpage110
    journal lastpage121
    identifier eissn1528-8900
    keywordsPressure
    keywordsFlow (Dynamics)
    keywordsHeat transfer
    keywordsMeasurement
    keywordsTurbulence
    keywordsReynolds number
    keywordsBlades
    keywordsDesign
    keywordsCascades (Fluid dynamics)
    keywordsSuction
    keywordsRotors AND Turbines
    treeJournal of Turbomachinery:;2004:;volume( 126 ):;issue: 001
    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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