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    First- and Second-Order Closure Models for Wind in a Plant Canopy

    Source: Journal of Applied Meteorology:;2001:;volume( 040 ):;issue: 010::page 1762
    Author:
    Pinard, J. D. Jean-Paul
    ,
    Wilson, John D.
    DOI: 10.1175/1520-0450(2001)040<1762:FASOCM>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Katul and Chang recently compared the performance of two second-order closure models with observations of wind and turbulence in the Duke Forest canopy, noting that such models ?alleviate some of the theoretical objections to first-order closure.? This paper demonstrates that, notwithstanding those (valid) theoretical objections, Duke Forest wind simulations of comparable quality can be obtained using a first-order closure, namely, eddy viscosity K ? ?k, where k is the turbulent kinetic energy and ? is a turbulence length scale. It is concluded that, most often, uncertainty in the drag coefficient will limit the accuracy of modeled wind statistics, regardless of the turbulence closure chosen.
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      First- and Second-Order Closure Models for Wind in a Plant Canopy

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4148463
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    contributor authorPinard, J. D. Jean-Paul
    contributor authorWilson, John D.
    date accessioned2017-06-09T14:08:04Z
    date available2017-06-09T14:08:04Z
    date copyright2001/10/01
    date issued2001
    identifier issn0894-8763
    identifier otherams-13055.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4148463
    description abstractKatul and Chang recently compared the performance of two second-order closure models with observations of wind and turbulence in the Duke Forest canopy, noting that such models ?alleviate some of the theoretical objections to first-order closure.? This paper demonstrates that, notwithstanding those (valid) theoretical objections, Duke Forest wind simulations of comparable quality can be obtained using a first-order closure, namely, eddy viscosity K ? ?k, where k is the turbulent kinetic energy and ? is a turbulence length scale. It is concluded that, most often, uncertainty in the drag coefficient will limit the accuracy of modeled wind statistics, regardless of the turbulence closure chosen.
    publisherAmerican Meteorological Society
    titleFirst- and Second-Order Closure Models for Wind in a Plant Canopy
    typeJournal Paper
    journal volume40
    journal issue10
    journal titleJournal of Applied Meteorology
    identifier doi10.1175/1520-0450(2001)040<1762:FASOCM>2.0.CO;2
    journal fristpage1762
    journal lastpage1768
    treeJournal of Applied Meteorology:;2001:;volume( 040 ):;issue: 010
    contenttypeFulltext
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian
     
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian