YaBeSH Engineering and Technology Library

    • Journals
    • PaperQuest
    • YSE Standards
    • YaBeSH
    • Login
    View Item 
    •   YE&T Library
    • ASME
    • Journal of Heat Transfer
    • View Item
    •   YE&T Library
    • ASME
    • Journal of Heat Transfer
    • 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

    Effect of Longitudinal Minigrooves on Flow Stability and Wave Characteristics of Falling Liquid Films

    Source: Journal of Heat Transfer:;2009:;volume( 131 ):;issue: 001::page 11601
    Author:
    Klaus Helbig
    ,
    Ralph Nasarek
    ,
    Tatiana Gambaryan-Roisman
    ,
    Peter Stephan
    DOI: 10.1115/1.2993539
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Falling liquid films are used in many industrial apparatuses. In many cases the film flow along a wall with topography is considered advantageous for intensification of the heat and mass transport. One of the promising types of the wall topography for the heat transfer intensification is comprised of minigrooves aligned along the main flow direction. The wall topography affects the development of wavy patterns on the liquid-gas interface. Linear stability analysis of the falling film flow based on the long-wave theory predicts that longitudinal grooves lead to the decrease in the disturbance growth rate and therefore stabilize the film. The linear stability analysis also predicts that the frequency of the fastest growing disturbance mode and the wave propagation velocity decrease on a wall with longitudinal minigrooves in comparison with a smooth wall. In the present work the effect of the longitudinal minigrooves on the falling film flow is studied experimentally. We use the shadow method and the confocal chromatic sensoring technique to study the wavy structure of falling films on smooth walls and on walls with longitudinal minigrooves. The measured film thickness profiles are used to quantify the effect of the wall topography on wave characteristics. The experimental results confirm the theoretical predictions.
    keyword(s): Stability , Waves , Film thickness , Flow (Dynamics) , Liquid films , Shades and shadows AND Wave propagation ,
    • Download: (704.9Kb)
    • Show Full MetaData Hide Full MetaData
    • Get RIS
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      Effect of Longitudinal Minigrooves on Flow Stability and Wave Characteristics of Falling Liquid Films

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/141142
    Collections
    • Journal of Heat Transfer

    Show full item record

    contributor authorKlaus Helbig
    contributor authorRalph Nasarek
    contributor authorTatiana Gambaryan-Roisman
    contributor authorPeter Stephan
    date accessioned2017-05-09T00:33:57Z
    date available2017-05-09T00:33:57Z
    date copyrightJanuary, 2009
    date issued2009
    identifier issn0022-1481
    identifier otherJHTRAO-27853#011601_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/141142
    description abstractFalling liquid films are used in many industrial apparatuses. In many cases the film flow along a wall with topography is considered advantageous for intensification of the heat and mass transport. One of the promising types of the wall topography for the heat transfer intensification is comprised of minigrooves aligned along the main flow direction. The wall topography affects the development of wavy patterns on the liquid-gas interface. Linear stability analysis of the falling film flow based on the long-wave theory predicts that longitudinal grooves lead to the decrease in the disturbance growth rate and therefore stabilize the film. The linear stability analysis also predicts that the frequency of the fastest growing disturbance mode and the wave propagation velocity decrease on a wall with longitudinal minigrooves in comparison with a smooth wall. In the present work the effect of the longitudinal minigrooves on the falling film flow is studied experimentally. We use the shadow method and the confocal chromatic sensoring technique to study the wavy structure of falling films on smooth walls and on walls with longitudinal minigrooves. The measured film thickness profiles are used to quantify the effect of the wall topography on wave characteristics. The experimental results confirm the theoretical predictions.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleEffect of Longitudinal Minigrooves on Flow Stability and Wave Characteristics of Falling Liquid Films
    typeJournal Paper
    journal volume131
    journal issue1
    journal titleJournal of Heat Transfer
    identifier doi10.1115/1.2993539
    journal fristpage11601
    identifier eissn1528-8943
    keywordsStability
    keywordsWaves
    keywordsFilm thickness
    keywordsFlow (Dynamics)
    keywordsLiquid films
    keywordsShades and shadows AND Wave propagation
    treeJournal of Heat Transfer:;2009:;volume( 131 ):;issue: 001
    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