Effect of grouping of fuel droplets on a flame formed by an oscillating spray jet

David Katoshevski, J. B. Greenberg

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

    Abstract

    The sensitivity to the vaporization Damkohler number of the behavior of a co-flow laminar spray diffusion flame in an oscillating flow field is investigated. Droplet grouping induced by the host gas flow oscillations is accounted for. The effect of droplet grouping is described through a specially constructed model for the vaporization Damkohler number that responds to the proximity of the droplets as they cluster due to the spray-flow oscillations. A formal analytical solution is developed for Schwab-Zeldovitch parameters through which the dynamics of the spray flame front shapes and thermal fields are deduced. Computed results based on the solutions demonstrate how strongly the vaporization Damkohler number including droplet grouping effects impacts on the type of primary homogeneous flame formed and on the possible existence of multiple flame sheets as a result of dynamic changes from under- to over-ventilated flames as the flow field oscillates.

    Original languageEnglish
    Title of host publicationProceedings of the 5th International Conference on Jets, Wakes and Separated Flows, ICJWSF 2015
    EditorsAntonio Segalini
    PublisherSpringer Science and Business Media, LLC
    Pages527-535
    Number of pages9
    ISBN (Print)9783319306001
    DOIs
    StatePublished - 1 Jan 2016
    Event5th International Conference on Jets, Wakes and Separated Flows, ICJWSF2015 - Stockholm, Sweden
    Duration: 15 Jun 201518 Jun 2015

    Publication series

    NameSpringer Proceedings in Physics
    Volume185
    ISSN (Print)0930-8989
    ISSN (Electronic)1867-4941

    Conference

    Conference5th International Conference on Jets, Wakes and Separated Flows, ICJWSF2015
    Country/TerritorySweden
    CityStockholm
    Period15/06/1518/06/15

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