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    The Dynamics of Falling Marine Chain: A Continuum Model

    Source: Journal of Offshore Mechanics and Arctic Engineering:;1998:;volume( 120 ):;issue: 001::page 30
    Author:
    W. C. Webster
    DOI: 10.1115/1.2829517
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: This paper investigates the dynamics of a length of chain that is attached to the ocean floor, initially oriented vertically and the top end allowed to fall. A series of simulations of the falling was performed using a continuum model of the chain. It was found that, although initially the chain does fall straight down, when its speed approaches terminal velocity in this direction, it develops instabilities which cause severe motions in the chain, particularly at the top end of the chain. It was found that these motions are sensitive to the longitudinal drag coefficient, Cd,L . A statistical analysis of many different simulations of the falling process indicates that the whipping of the top end of the chain may be more dangerous to neighboring platforms or equipment than the impact of the chain on the bottom.
    keyword(s): Chain , Dynamics (Mechanics) , Motion , Engineering simulation , Statistical analysis , Seabed AND Drag (Fluid dynamics) ,
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      The Dynamics of Falling Marine Chain: A Continuum Model

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    http://yetl.yabesh.ir/yetl1/handle/yetl/120977
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    • Journal of Offshore Mechanics and Arctic Engineering

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    contributor authorW. C. Webster
    date accessioned2017-05-08T23:57:32Z
    date available2017-05-08T23:57:32Z
    date copyrightFebruary, 1998
    date issued1998
    identifier issn0892-7219
    identifier otherJMOEEX-28123#30_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/120977
    description abstractThis paper investigates the dynamics of a length of chain that is attached to the ocean floor, initially oriented vertically and the top end allowed to fall. A series of simulations of the falling was performed using a continuum model of the chain. It was found that, although initially the chain does fall straight down, when its speed approaches terminal velocity in this direction, it develops instabilities which cause severe motions in the chain, particularly at the top end of the chain. It was found that these motions are sensitive to the longitudinal drag coefficient, Cd,L . A statistical analysis of many different simulations of the falling process indicates that the whipping of the top end of the chain may be more dangerous to neighboring platforms or equipment than the impact of the chain on the bottom.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleThe Dynamics of Falling Marine Chain: A Continuum Model
    typeJournal Paper
    journal volume120
    journal issue1
    journal titleJournal of Offshore Mechanics and Arctic Engineering
    identifier doi10.1115/1.2829517
    journal fristpage30
    journal lastpage36
    identifier eissn1528-896X
    keywordsChain
    keywordsDynamics (Mechanics)
    keywordsMotion
    keywordsEngineering simulation
    keywordsStatistical analysis
    keywordsSeabed AND Drag (Fluid dynamics)
    treeJournal of Offshore Mechanics and Arctic Engineering:;1998:;volume( 120 ):;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
    yabeshDSpacePersian