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    The Importance of the Mean Elevation in Predicting Skin Friction for Flow Over Closely Packed Surface Roughness

    Source: Journal of Fluids Engineering:;2006:;volume( 128 ):;issue: 003::page 579
    Author:
    Stephen T. McClain
    ,
    S. Patrick Collins
    ,
    B. Keith Hodge
    ,
    Jeffrey P. Bons
    DOI: 10.1115/1.2175164
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The discrete-element surface roughness model is used to provide insight into the importance of the mean elevation of surface roughness in predicting skin friction over rough surfaces. Comparison of experimental data and extensive computational results using the discrete-element model confirm that the appropriate surface for the imposition of the no-slip condition is the mean elevation of the surface roughness. Additionally, the use of the mean elevation in the Sigal-Danberg approach relating their parameter to the equivalent sand-grain roughness height results in replacing three different piecewise expressions with a single relation. The appropriate mean elevation for closely-packed spherical roughness is also examined.
    keyword(s): Surface roughness , Skin friction (Fluid dynamics) , Flow (Dynamics) AND Sands ,
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      The Importance of the Mean Elevation in Predicting Skin Friction for Flow Over Closely Packed Surface Roughness

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    http://yetl.yabesh.ir/yetl1/handle/yetl/133950
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    contributor authorStephen T. McClain
    contributor authorS. Patrick Collins
    contributor authorB. Keith Hodge
    contributor authorJeffrey P. Bons
    date accessioned2017-05-09T00:20:21Z
    date available2017-05-09T00:20:21Z
    date copyrightMay, 2006
    date issued2006
    identifier issn0098-2202
    identifier otherJFEGA4-27217#579_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/133950
    description abstractThe discrete-element surface roughness model is used to provide insight into the importance of the mean elevation of surface roughness in predicting skin friction over rough surfaces. Comparison of experimental data and extensive computational results using the discrete-element model confirm that the appropriate surface for the imposition of the no-slip condition is the mean elevation of the surface roughness. Additionally, the use of the mean elevation in the Sigal-Danberg approach relating their parameter to the equivalent sand-grain roughness height results in replacing three different piecewise expressions with a single relation. The appropriate mean elevation for closely-packed spherical roughness is also examined.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleThe Importance of the Mean Elevation in Predicting Skin Friction for Flow Over Closely Packed Surface Roughness
    typeJournal Paper
    journal volume128
    journal issue3
    journal titleJournal of Fluids Engineering
    identifier doi10.1115/1.2175164
    journal fristpage579
    journal lastpage586
    identifier eissn1528-901X
    keywordsSurface roughness
    keywordsSkin friction (Fluid dynamics)
    keywordsFlow (Dynamics) AND Sands
    treeJournal of Fluids Engineering:;2006:;volume( 128 ):;issue: 003
    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