YaBeSH Engineering and Technology Library

    • Journals
    • PaperQuest
    • YSE Standards
    • YaBeSH
    • Login
    View Item 
    •   YE&T Library
    • AMS
    • Journal of the Atmospheric Sciences
    • View Item
    •   YE&T Library
    • AMS
    • Journal of the Atmospheric Sciences
    • View Item
    • All Fields
    • Source Title
    • Year
    • Publisher
    • Title
    • Subject
    • Author
    • DOI
    • ISBN
    Advanced Search
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Archive

    Vertical-Velocity Skewness in the Buoyancy-Driven Boundary Layer

    Source: Journal of the Atmospheric Sciences:;1989:;Volume( 047 ):;issue: 009::page 1149
    Author:
    Moeng, Chin-Hoh
    ,
    Rotunno, Richard
    DOI: 10.1175/1520-0469(1990)047<1149:VVSITB>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: A number of puzzling features of the skewness of the vertical velocity field, Sw(z), are found in observations and large-eddy simulations (LES) of the buoyancy-driven planetary boundary layer (PBL). For example, observations of Sw(z) in cases where the air is heated from below indicate that Sw(z) > 0 and remains relatively constant for z ? 0.3zi, whereas all large-eddy simulations of these cases show a continuing increase of Sw(z) with height. In cases where the air is both heated from below and cooled from above, as in some of the stratus-topped PBL cases, large-eddy simulations show a rather curious feature: Sw is positive in the upper layer and negative in the lower layer. In considering these features, it occurred to us that a theoretical model of what one should expect of the skewness distribution, even in simple situations, did not exist. Hence in the present paper we examine the skewness distributions from direct numerical simulations of several simple archetypes of buoyancy-driven turbulent flow. While these simulations do not resolve the discrepancy between LES and observations, they help in understanding the LES results, and suggest avenues for future research.
    • Download: (1.222Mb)
    • Show Full MetaData Hide Full MetaData
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      Vertical-Velocity Skewness in the Buoyancy-Driven Boundary Layer

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4156532
    Collections
    • Journal of the Atmospheric Sciences

    Show full item record

    contributor authorMoeng, Chin-Hoh
    contributor authorRotunno, Richard
    date accessioned2017-06-09T14:29:42Z
    date available2017-06-09T14:29:42Z
    date copyright1990/05/01
    date issued1989
    identifier issn0022-4928
    identifier otherams-20317.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4156532
    description abstractA number of puzzling features of the skewness of the vertical velocity field, Sw(z), are found in observations and large-eddy simulations (LES) of the buoyancy-driven planetary boundary layer (PBL). For example, observations of Sw(z) in cases where the air is heated from below indicate that Sw(z) > 0 and remains relatively constant for z ? 0.3zi, whereas all large-eddy simulations of these cases show a continuing increase of Sw(z) with height. In cases where the air is both heated from below and cooled from above, as in some of the stratus-topped PBL cases, large-eddy simulations show a rather curious feature: Sw is positive in the upper layer and negative in the lower layer. In considering these features, it occurred to us that a theoretical model of what one should expect of the skewness distribution, even in simple situations, did not exist. Hence in the present paper we examine the skewness distributions from direct numerical simulations of several simple archetypes of buoyancy-driven turbulent flow. While these simulations do not resolve the discrepancy between LES and observations, they help in understanding the LES results, and suggest avenues for future research.
    publisherAmerican Meteorological Society
    titleVertical-Velocity Skewness in the Buoyancy-Driven Boundary Layer
    typeJournal Paper
    journal volume47
    journal issue9
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/1520-0469(1990)047<1149:VVSITB>2.0.CO;2
    journal fristpage1149
    journal lastpage1162
    treeJournal of the Atmospheric Sciences:;1989:;Volume( 047 ):;issue: 009
    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