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    Linear Shear Flow Past a Rotating Elliptic Cylinder

    Source: Journal of Fluids Engineering:;2018:;volume( 140 ):;issue: 012::page 121202
    Author:
    Naik, Sandeep N.
    ,
    Vengadesan, S.
    ,
    Arul Prakash, K.
    DOI: 10.1115/1.4040365
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Simulations are carried out for linear shear flow past a rotating elliptic cylinder to investigate the effect of shear flow on hovering vortex. An in-house fluid solver that is based on immersed boundary method (IBM) is used to study the flow features and variation in aerodynamic forces. The simulations are carried out for various nondimensional rotation rates, axis ratio (AR) of the cylinder, and shear parameter. In shear flow past rotating elliptic cylinder, the negative vortices are sustained for longer distances in the downstream of the cylinder, and due to the velocity gradient, the sequence of the vortex street changes. It also has significant effect on the formation and composition of hovering vortex. To capture these features, each vortex is tracked as they form, detach, and move in the wake of the cylinder. Hovering vortex, formed due to coalescing of multiple vortices near the cylinder, is subdued for smaller rotation rates at moderate shear. It is also observed that lift forces increase linearly with shear, while the frequency of shedding shows no dependency on shear parameter.
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      Linear Shear Flow Past a Rotating Elliptic Cylinder

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4251559
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    contributor authorNaik, Sandeep N.
    contributor authorVengadesan, S.
    contributor authorArul Prakash, K.
    date accessioned2019-02-28T10:59:53Z
    date available2019-02-28T10:59:53Z
    date copyright6/26/2018 12:00:00 AM
    date issued2018
    identifier issn0098-2202
    identifier otherfe_140_12_121202.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4251559
    description abstractSimulations are carried out for linear shear flow past a rotating elliptic cylinder to investigate the effect of shear flow on hovering vortex. An in-house fluid solver that is based on immersed boundary method (IBM) is used to study the flow features and variation in aerodynamic forces. The simulations are carried out for various nondimensional rotation rates, axis ratio (AR) of the cylinder, and shear parameter. In shear flow past rotating elliptic cylinder, the negative vortices are sustained for longer distances in the downstream of the cylinder, and due to the velocity gradient, the sequence of the vortex street changes. It also has significant effect on the formation and composition of hovering vortex. To capture these features, each vortex is tracked as they form, detach, and move in the wake of the cylinder. Hovering vortex, formed due to coalescing of multiple vortices near the cylinder, is subdued for smaller rotation rates at moderate shear. It is also observed that lift forces increase linearly with shear, while the frequency of shedding shows no dependency on shear parameter.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleLinear Shear Flow Past a Rotating Elliptic Cylinder
    typeJournal Paper
    journal volume140
    journal issue12
    journal titleJournal of Fluids Engineering
    identifier doi10.1115/1.4040365
    journal fristpage121202
    journal lastpage121202-10
    treeJournal of Fluids Engineering:;2018:;volume( 140 ):;issue: 012
    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