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    Drag Forces on Oscillating Cylinders in a Uniform Flow

    Source: Journal of Energy Resources Technology:;1985:;volume( 107 ):;issue: 001::page 12
    Author:
    M. Kato
    ,
    T. Abe
    ,
    M. Tamiya
    ,
    T. Kumakiri
    DOI: 10.1115/1.3231151
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: This paper describes the drag coefficients of cylinders oscillated in both in-line and transverse directions to a uniform flow. The drag coefficients CD have been obtained experimentally over a wide range of oscillation frequencies, amplitude and flow velocities for the cylinders of various diameters under simulated practical offshore conditions. New expressions are proposed for the drag coefficients CD of an oscillating cylinder in a uniform flow. The boundary between the regions, where CD ≃1 and CD <1, is clearly established by employing the Keulegan-Carpenter number and the reduced velocity as dimensionless numbers. These dimensionless numbers also clearly describe CD variation within the region of rapid CD value decrease.
    keyword(s): Force , Flow (Dynamics) , Drag (Fluid dynamics) , Cylinders , Frequency , Oscillations AND Ocean engineering ,
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      Drag Forces on Oscillating Cylinders in a Uniform Flow

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/99696
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    • Journal of Energy Resources Technology

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    contributor authorM. Kato
    contributor authorT. Abe
    contributor authorM. Tamiya
    contributor authorT. Kumakiri
    date accessioned2017-05-08T23:19:58Z
    date available2017-05-08T23:19:58Z
    date copyrightMarch, 1985
    date issued1985
    identifier issn0195-0738
    identifier otherJERTD2-26403#12_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/99696
    description abstractThis paper describes the drag coefficients of cylinders oscillated in both in-line and transverse directions to a uniform flow. The drag coefficients CD have been obtained experimentally over a wide range of oscillation frequencies, amplitude and flow velocities for the cylinders of various diameters under simulated practical offshore conditions. New expressions are proposed for the drag coefficients CD of an oscillating cylinder in a uniform flow. The boundary between the regions, where CD ≃1 and CD <1, is clearly established by employing the Keulegan-Carpenter number and the reduced velocity as dimensionless numbers. These dimensionless numbers also clearly describe CD variation within the region of rapid CD value decrease.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleDrag Forces on Oscillating Cylinders in a Uniform Flow
    typeJournal Paper
    journal volume107
    journal issue1
    journal titleJournal of Energy Resources Technology
    identifier doi10.1115/1.3231151
    journal fristpage12
    journal lastpage17
    identifier eissn1528-8994
    keywordsForce
    keywordsFlow (Dynamics)
    keywordsDrag (Fluid dynamics)
    keywordsCylinders
    keywordsFrequency
    keywordsOscillations AND Ocean engineering
    treeJournal of Energy Resources Technology:;1985:;volume( 107 ):;issue: 001
    contenttypeFulltext
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