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    A Fast-Response High Spatial Resolution Total Temperature Probe Using a Pulsed Heating Technique

    Source: Journal of Turbomachinery:;1998:;volume( 120 ):;issue: 003::page 601
    Author:
    D. R. Buttsworth
    ,
    T. V. Jones
    DOI: 10.1115/1.2841758
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: This paper discusses the operation of a fast-response total temperature probe based on transient thin film heat flux gage technology. The probe utilizes two thin film gages located close to the stagnation point of a hemispherically blunted fused quartz cylinder. Development of the present total temperature probe was motivated by the need for a fast-response device with a high spatial resolution. The diameter of the probe was 2.8 mm and the two films were separated by a distance of less than 1 mm. Measurement of the flow total temperature requires the films to operate at different temperatures. In the present work, the temperature difference was generated using a current pulse (approximately 70 mA with a duration of around 1 s) to heat one of the thin film resistance gages. With this technique, temperature differences between the hot and cold films of around 120 K were achieved. The interpretation of the transient surface temperature measurements is discussed, and the validity and utility of the technique are demonstrated with reference to total temperature and convective heat transfer coefficient measurements in a compressible free jet. The results demonstrate that accurate total temperature and convective heat transfer coefficient measurements with high spatial and temporal resolution can be obtained with the present device.
    keyword(s): Temperature , Resolution (Optics) , Probes , Heating , Gages , Thin films , Measurement , Convection , Cylinders , Temperature measurement , Electrical resistance , Flow (Dynamics) , Heat , Heat flux AND Quartz ,
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      A Fast-Response High Spatial Resolution Total Temperature Probe Using a Pulsed Heating Technique

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    http://yetl.yabesh.ir/yetl1/handle/yetl/121316
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    contributor authorD. R. Buttsworth
    contributor authorT. V. Jones
    date accessioned2017-05-08T23:58:11Z
    date available2017-05-08T23:58:11Z
    date copyrightJuly, 1998
    date issued1998
    identifier issn0889-504X
    identifier otherJOTUEI-28666#601_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/121316
    description abstractThis paper discusses the operation of a fast-response total temperature probe based on transient thin film heat flux gage technology. The probe utilizes two thin film gages located close to the stagnation point of a hemispherically blunted fused quartz cylinder. Development of the present total temperature probe was motivated by the need for a fast-response device with a high spatial resolution. The diameter of the probe was 2.8 mm and the two films were separated by a distance of less than 1 mm. Measurement of the flow total temperature requires the films to operate at different temperatures. In the present work, the temperature difference was generated using a current pulse (approximately 70 mA with a duration of around 1 s) to heat one of the thin film resistance gages. With this technique, temperature differences between the hot and cold films of around 120 K were achieved. The interpretation of the transient surface temperature measurements is discussed, and the validity and utility of the technique are demonstrated with reference to total temperature and convective heat transfer coefficient measurements in a compressible free jet. The results demonstrate that accurate total temperature and convective heat transfer coefficient measurements with high spatial and temporal resolution can be obtained with the present device.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleA Fast-Response High Spatial Resolution Total Temperature Probe Using a Pulsed Heating Technique
    typeJournal Paper
    journal volume120
    journal issue3
    journal titleJournal of Turbomachinery
    identifier doi10.1115/1.2841758
    journal fristpage601
    journal lastpage607
    identifier eissn1528-8900
    keywordsTemperature
    keywordsResolution (Optics)
    keywordsProbes
    keywordsHeating
    keywordsGages
    keywordsThin films
    keywordsMeasurement
    keywordsConvection
    keywordsCylinders
    keywordsTemperature measurement
    keywordsElectrical resistance
    keywordsFlow (Dynamics)
    keywordsHeat
    keywordsHeat flux AND Quartz
    treeJournal of Turbomachinery:;1998:;volume( 120 ):;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