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    The Effects of Stratification on Flow Separation

    Source: Journal of the Atmospheric Sciences:;2005:;Volume( 062 ):;issue: 007::page 2618
    Author:
    Ambaum, Maarten H. P.
    ,
    Marshall, David P.
    DOI: 10.1175/JAS3485.1
    Publisher: American Meteorological Society
    Abstract: Separation of stratified flow over a two-dimensional hill is inhibited or facilitated by acceleration or deceleration of the flow just outside the attached boundary layer. In this note, an expression is derived for this acceleration or deceleration in terms of streamline curvature and stratification. The expression is valid for linear as well as nonlinear deformation of the flow. For hills of vanishing aspect ratio a linear theory can be derived and a full regime diagram for separation can be constructed. For hills of finite aspect ratio scaling relationships can be derived that indicate the presence of a critical aspect ratio, proportional to the stratification, above which separation will occur as well as a second critical aspect ratio above which separation will always occur irrespective of stratification.
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      The Effects of Stratification on Flow Separation

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4218034
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    contributor authorAmbaum, Maarten H. P.
    contributor authorMarshall, David P.
    date accessioned2017-06-09T16:52:19Z
    date available2017-06-09T16:52:19Z
    date copyright2005/07/01
    date issued2005
    identifier issn0022-4928
    identifier otherams-75672.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4218034
    description abstractSeparation of stratified flow over a two-dimensional hill is inhibited or facilitated by acceleration or deceleration of the flow just outside the attached boundary layer. In this note, an expression is derived for this acceleration or deceleration in terms of streamline curvature and stratification. The expression is valid for linear as well as nonlinear deformation of the flow. For hills of vanishing aspect ratio a linear theory can be derived and a full regime diagram for separation can be constructed. For hills of finite aspect ratio scaling relationships can be derived that indicate the presence of a critical aspect ratio, proportional to the stratification, above which separation will occur as well as a second critical aspect ratio above which separation will always occur irrespective of stratification.
    publisherAmerican Meteorological Society
    titleThe Effects of Stratification on Flow Separation
    typeJournal Paper
    journal volume62
    journal issue7
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/JAS3485.1
    journal fristpage2618
    journal lastpage2625
    treeJournal of the Atmospheric Sciences:;2005:;Volume( 062 ):;issue: 007
    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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