Water circulation in non-isothermal droplet-laden turbulent channel flow

E Russo, Johannes G.M. Kuerten, C.W.M. van der Geld, Bernardus J. Geurts

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    2 Citations (Scopus)
    23 Downloads (Pure)

    Abstract

    We propose a point-particle model for two-way coupling of water droplets dispersed in turbulent flow of a carrier gas consisting of air and water vapor. An incompressible flow formulation is applied for direct numerical simulation (DNS) of turbulent channel flow with a warm and a cold wall. Compared to simulations without droplets or with solid particles a significant increase in Nusselt number is found, arising from the additional phase changes. In the statistically steady state, which is reached after a long time, the flow exhibits a mean motion of water vapor from the warm wall to the cold wall. Vapor condenses on average on drops near the cold wall and evaporates from drops near the warm wall. This transport is balanced by a net mean mass transfer of droplets from the cold wall to the warm wall.
    Original languageUndefined
    Title of host publicationProceedings of the International Conference on Numerical Analysis and Applied Mathematics (ICNAAM-2013)
    EditorsT. Simos, G. Psihoyios, Ch. Tsitouras
    PublisherAIP Publishing LLC
    Pages1079-1082
    Number of pages4
    ISBN (Print)978-0-7354-1184-5
    DOIs
    Publication statusPublished - 2013
    EventInternational Conference on Numerical Analysis and Applied Mathematics, ICNAAM 2013 - Rhodes, Greece
    Duration: 21 Sep 201327 Sep 2013

    Publication series

    NameAIP Conference Proceedings
    PublisherAIP Publishing
    Volume1558

    Conference

    ConferenceInternational Conference on Numerical Analysis and Applied Mathematics, ICNAAM 2013
    Period21/09/1327/09/13
    Other21-27 September 2013

    Keywords

    • EWI-24295
    • Turbulence
    • METIS-302637
    • Droplets
    • Dispersion
    • IR-89231

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