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    Vortex-Induced Strumming Vibrations of Marine Cables With Attached Masses

    Source: Journal of Energy Resources Technology:;1984:;volume( 106 ):;issue: 004::page 458
    Author:
    O. M. Griffin
    ,
    J. K. Vandiver
    DOI: 10.1115/1.3231106
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Twenty full-scale test runs were conducted during the cable strumming experiments reported in this paper. These consisted of ten pairs of equivalent tests conducted in air and in water with a cable fitted with arrays of attached masses. The measured in-air natural frequencies are in good agreement with computed code predictions for the second and higher (up to n = 5) cable modes. The first mode frequency apparently was influenced by the sag of the cable. The measured mode shapes of the cable vibrations in water also are in agreement with the computed mode shapes. For the experiments in water the computed and measured natural frequencies are in good agreement. Drag coefficients in the range CD = 2.4 to 3.2 were commonly observed when the cable-attached mass system was strumming due to the water flow past it.
    keyword(s): Cables , Vibration , Vortices , Water , Frequency , Shapes , Flow (Dynamics) AND Drag (Fluid dynamics) ,
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      Vortex-Induced Strumming Vibrations of Marine Cables With Attached Masses

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    http://yetl.yabesh.ir/yetl1/handle/yetl/98266
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    • Journal of Energy Resources Technology

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    contributor authorO. M. Griffin
    contributor authorJ. K. Vandiver
    date accessioned2017-05-08T23:17:30Z
    date available2017-05-08T23:17:30Z
    date copyrightDecember, 1984
    date issued1984
    identifier issn0195-0738
    identifier otherJERTD2-26401#458_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/98266
    description abstractTwenty full-scale test runs were conducted during the cable strumming experiments reported in this paper. These consisted of ten pairs of equivalent tests conducted in air and in water with a cable fitted with arrays of attached masses. The measured in-air natural frequencies are in good agreement with computed code predictions for the second and higher (up to n = 5) cable modes. The first mode frequency apparently was influenced by the sag of the cable. The measured mode shapes of the cable vibrations in water also are in agreement with the computed mode shapes. For the experiments in water the computed and measured natural frequencies are in good agreement. Drag coefficients in the range CD = 2.4 to 3.2 were commonly observed when the cable-attached mass system was strumming due to the water flow past it.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleVortex-Induced Strumming Vibrations of Marine Cables With Attached Masses
    typeJournal Paper
    journal volume106
    journal issue4
    journal titleJournal of Energy Resources Technology
    identifier doi10.1115/1.3231106
    journal fristpage458
    journal lastpage465
    identifier eissn1528-8994
    keywordsCables
    keywordsVibration
    keywordsVortices
    keywordsWater
    keywordsFrequency
    keywordsShapes
    keywordsFlow (Dynamics) AND Drag (Fluid dynamics)
    treeJournal of Energy Resources Technology:;1984:;volume( 106 ):;issue: 004
    contenttypeFulltext
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