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    Capillary-elastic Instabilities of Liquid-lined Lung Airways

    Source: Journal of Biomechanical Engineering:;2002:;volume( 124 ):;issue: 006::page 650
    Author:
    J. Rosenzweig
    ,
    O. E. Jensen
    DOI: 10.1115/1.1516811
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: To model the competition between capillary and elastic forces in controlling the shape of a small lung airway and its interior liquid lining, we compute the equilibrium configurations of a liquid-lined, externally pressurized, buckled elastic tube. We impose axial uniformity and assume that the liquid wets the tube wall with zero contact angle. Non-zero surface tension has a profound effect on the tube’s quasi-steady inflation-deflation characteristics. At low liquid volumes, hysteresis arises through two distinct mechanisms, depending on the buckling wavenumber. Sufficient compression always leads to abrupt and irreversible collapse and flooding of the tube; flooding is promoted by increasing liquid volumes or surface tension. The model captures mechanisms whereby capillary-elastic instabilities can lead to airway closure.
    keyword(s): Force , Pressure , Surface tension , Fluids , Inflationary universe , Linings (Textiles) , Bifurcation , Buckling , Collapse , Compression , Floods , Lung , Mechanisms , Shapes AND Equilibrium (Physics) ,
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      Capillary-elastic Instabilities of Liquid-lined Lung Airways

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    http://yetl.yabesh.ir/yetl1/handle/yetl/126332
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    contributor authorJ. Rosenzweig
    contributor authorO. E. Jensen
    date accessioned2017-05-09T00:06:43Z
    date available2017-05-09T00:06:43Z
    date copyrightDecember, 2002
    date issued2002
    identifier issn0148-0731
    identifier otherJBENDY-26278#650_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/126332
    description abstractTo model the competition between capillary and elastic forces in controlling the shape of a small lung airway and its interior liquid lining, we compute the equilibrium configurations of a liquid-lined, externally pressurized, buckled elastic tube. We impose axial uniformity and assume that the liquid wets the tube wall with zero contact angle. Non-zero surface tension has a profound effect on the tube’s quasi-steady inflation-deflation characteristics. At low liquid volumes, hysteresis arises through two distinct mechanisms, depending on the buckling wavenumber. Sufficient compression always leads to abrupt and irreversible collapse and flooding of the tube; flooding is promoted by increasing liquid volumes or surface tension. The model captures mechanisms whereby capillary-elastic instabilities can lead to airway closure.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleCapillary-elastic Instabilities of Liquid-lined Lung Airways
    typeJournal Paper
    journal volume124
    journal issue6
    journal titleJournal of Biomechanical Engineering
    identifier doi10.1115/1.1516811
    journal fristpage650
    journal lastpage655
    identifier eissn1528-8951
    keywordsForce
    keywordsPressure
    keywordsSurface tension
    keywordsFluids
    keywordsInflationary universe
    keywordsLinings (Textiles)
    keywordsBifurcation
    keywordsBuckling
    keywordsCollapse
    keywordsCompression
    keywordsFloods
    keywordsLung
    keywordsMechanisms
    keywordsShapes AND Equilibrium (Physics)
    treeJournal of Biomechanical Engineering:;2002:;volume( 124 ):;issue: 006
    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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