Effect of evaporation and condensation on droplet size distribution in turbulence

Briti S. Deb, Lilya Ghazaryan, Herman J.H. Clercx, Cees W.M. van der Geld

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    1 Citation (Scopus)


    The interaction of droplets that undergo phase transition with a turbulent flow is encountered in many areas of engineering and atmospheric science as described in (Lanotte et al., 2008). In the context of cloud physics the evaporation and condensation of water vapor from and to the droplets is the governing process for the growth of the droplets from sub micron size up to a size of around 20 μm, after which they grow mostly by coalescence until they become large enough to fall as rain drops under gravity. Much pioneering work has been done in (Luo et al., 2008; Lanotte et al., 2008; Sidin et al., 2009) on the theoretical and numerical investigation of the influence of turbulence on evaporation and condensation associated with aerosol droplets. In this paper we consider the situation of water droplets undergoing phase change and moving in air. Air also advects the vapor concentration field. We compute the natural size distribution of the droplets that arises as a result of the interaction between the droplets and the transporting turbulent flow. We assume the turbulent flow to be homogeneous and isotropic. We will perform DNS of the velocity field and the passively advected vapor and temperature field. The droplet trajectories are computed time-accurately in a domain with periodic boundary conditions.
    Original languageEnglish
    Title of host publicationDirect and Large-Eddy Simulation VIII
    EditorsHans Kuerten, Bernard Geurts, Vincenzo Armenio, Jochen Fröhlich
    Place of PublicationDordrecht
    Number of pages6
    ISBN (Electronic)978-94-007-2482-2
    ISBN (Print)978-94-007-2481-5
    Publication statusPublished - 2011
    Event8th ERCOFTAC Workshop on Direct and Large-Eddy Simulation VIII, DLES 2010 - Eindhoven University of Technology, Eindhoven, Netherlands
    Duration: 7 Jul 20109 Jul 2010
    Conference number: 8

    Publication series

    NameERCOFTAC series
    ISSN (Print)1382-4309


    Workshop8th ERCOFTAC Workshop on Direct and Large-Eddy Simulation VIII, DLES 2010
    Abbreviated titleDLES


    • Probability density function
    • Sherwood number
    • Droplet surface
    • Passive scalar
    • Droplet temperature

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