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    Numerical Analysis to Investigate the Effects of Thermal Hydraulic Instabilities on Deterioration Heat Transfer and Wall Temperature in the CANDU Supercritical Water Reactor

    Source: Journal of Nuclear Engineering and Radiation Science:;2015:;volume( 001 ):;issue: 004::page 41011
    Author:
    Dutta, Goutam
    ,
    Zhang, Chao
    ,
    Jiang, Jin
    DOI: 10.1115/1.4030199
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The present work analyzes the thermalhydraulic behavior of the CANDU supercritical water reactor (SCWR) using a 1D numerical model. The possibility of a static instability, the Ledinegg excursion, is investigated, which reveals it can occur only in a hypothetical condition, far from the proposed operating regime of the CANDU SCWR. The investigation demonstrates the possibility of density wave oscillations (DWOs), a dynamic instability, in the operating regime of the CANDU SCWR and its marginal stability boundary (MSB) is obtained. The phenomenon of the deterioration in heat transfer is observed, and the related investigation shows that the strong buoyancy effect is responsible for its appearance inside the heating section of the channel of the CANDU SCWR core. The MSB is found to be inadequate in determining the safe operating zone of the reactor because the wall temperature can exceed the allowable limit from metallurgical consideration. The investigations also determine the safe as well as stable zone where the CANDU SCWR should operate in order to avoid the maximum temperature limit and DWOs.
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      Numerical Analysis to Investigate the Effects of Thermal Hydraulic Instabilities on Deterioration Heat Transfer and Wall Temperature in the CANDU Supercritical Water Reactor

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/159320
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    • Journal of Nuclear Engineering and Radiation Science

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    contributor authorDutta, Goutam
    contributor authorZhang, Chao
    contributor authorJiang, Jin
    date accessioned2017-05-09T01:22:29Z
    date available2017-05-09T01:22:29Z
    date issued2015
    identifier issn2332-8983
    identifier otherNERS_1_4_041011.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/159320
    description abstractThe present work analyzes the thermalhydraulic behavior of the CANDU supercritical water reactor (SCWR) using a 1D numerical model. The possibility of a static instability, the Ledinegg excursion, is investigated, which reveals it can occur only in a hypothetical condition, far from the proposed operating regime of the CANDU SCWR. The investigation demonstrates the possibility of density wave oscillations (DWOs), a dynamic instability, in the operating regime of the CANDU SCWR and its marginal stability boundary (MSB) is obtained. The phenomenon of the deterioration in heat transfer is observed, and the related investigation shows that the strong buoyancy effect is responsible for its appearance inside the heating section of the channel of the CANDU SCWR core. The MSB is found to be inadequate in determining the safe operating zone of the reactor because the wall temperature can exceed the allowable limit from metallurgical consideration. The investigations also determine the safe as well as stable zone where the CANDU SCWR should operate in order to avoid the maximum temperature limit and DWOs.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleNumerical Analysis to Investigate the Effects of Thermal Hydraulic Instabilities on Deterioration Heat Transfer and Wall Temperature in the CANDU Supercritical Water Reactor
    typeJournal Paper
    journal volume1
    journal issue4
    journal titleJournal of Nuclear Engineering and Radiation Science
    identifier doi10.1115/1.4030199
    journal fristpage41011
    journal lastpage41011
    treeJournal of Nuclear Engineering and Radiation Science:;2015:;volume( 001 ):;issue: 004
    contenttypeFulltext
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