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    Numerical Study of a Single-Point Mooring Gravity Fish Cage With Different Deformation-Suppression Methods

    Source: Journal of Offshore Mechanics and Arctic Engineering:;2020:;volume( 142 ):;issue: 004
    Author:
    Cheng, Hui
    ,
    Aarsæther, Karl Gunnar
    ,
    Li, Lin
    ,
    Ong, Muk Chen
    DOI: 10.1115/1.4046115
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Compared with the multipoint mooring fish cage, the single-point mooring (SPM) fish cage can spread out the fish wastes and uneaten feeds in a larger area, and it can also prevent the local environment from being overwhelmed. Thus, it has attracted much attention recently. In this research, different deformation-suppression methods are applied to the SPM system with a typical Norwegian fish cage aiming to increase the cultivation volume under the action of current and/or wave loads. A well-validated software, fhsim, is used to conduct the full-scale numerical study. The effects of the three deformation-suppression methods, i.e., (i) adding the lower bridles, (ii) adding the frontal rigid frame and (iii) adding the trawl doors, are analyzed under pure current and combined wave–current conditions. The results indicate that all the three deformation-suppression methods can improve the cultivation volume at least by 32% compared to the original SPM fish cage when the current velocity is larger than 0.5 m/s. In addition, moving the conjunction point close to the bottom ring can bring a positive effect on the cultivation volume maintaining with an only small increment in the tension force. This study can provide practical advice and useful guides for the SPM fish cage design.
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      Numerical Study of a Single-Point Mooring Gravity Fish Cage With Different Deformation-Suppression Methods

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4274215
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    contributor authorCheng, Hui
    contributor authorAarsæther, Karl Gunnar
    contributor authorLi, Lin
    contributor authorOng, Muk Chen
    date accessioned2022-02-04T14:42:43Z
    date available2022-02-04T14:42:43Z
    date copyright2020/02/24/
    date issued2020
    identifier issn0892-7219
    identifier otheromae_142_4_041301.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4274215
    description abstractCompared with the multipoint mooring fish cage, the single-point mooring (SPM) fish cage can spread out the fish wastes and uneaten feeds in a larger area, and it can also prevent the local environment from being overwhelmed. Thus, it has attracted much attention recently. In this research, different deformation-suppression methods are applied to the SPM system with a typical Norwegian fish cage aiming to increase the cultivation volume under the action of current and/or wave loads. A well-validated software, fhsim, is used to conduct the full-scale numerical study. The effects of the three deformation-suppression methods, i.e., (i) adding the lower bridles, (ii) adding the frontal rigid frame and (iii) adding the trawl doors, are analyzed under pure current and combined wave–current conditions. The results indicate that all the three deformation-suppression methods can improve the cultivation volume at least by 32% compared to the original SPM fish cage when the current velocity is larger than 0.5 m/s. In addition, moving the conjunction point close to the bottom ring can bring a positive effect on the cultivation volume maintaining with an only small increment in the tension force. This study can provide practical advice and useful guides for the SPM fish cage design.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleNumerical Study of a Single-Point Mooring Gravity Fish Cage With Different Deformation-Suppression Methods
    typeJournal Paper
    journal volume142
    journal issue4
    journal titleJournal of Offshore Mechanics and Arctic Engineering
    identifier doi10.1115/1.4046115
    page41301
    treeJournal of Offshore Mechanics and Arctic Engineering:;2020:;volume( 142 ):;issue: 004
    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
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