Impact of the Number of Computational Parcels on the Prediction of Highly Swirling Spray-Flame Mode and Structure

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    Abstract

    Results of impact of the number of computational parcels on droplet size distribution, flame mode and structure for ethanol spray flame simulations are presented. Predominantly premixed flame at inner shear layers is better predicted
    for larger number (500, 1000) of parcels; more uniform evaporation of larger droplets are predicted, and the appearance of a locally fully gaseous non-premixed mode is driven by the recirculating flow field. With smaller number (10, 100) of parcels, discrepancies in computed flame modes are noticed and these could be associated with complete and faster vaporization of higher population of small droplets occurring especially within the central recirculation zone under the influence of recirculating hot products. This methodology could help with choosing the appropriate number of computational parcels for such simulations.
    Original languageEnglish
    Title of host publicationECM - 10th European Combustion Meeting, April 14 - 15, 2021. Naples, Italy
    PublisherEuropean Combustion Meeting
    Number of pages6
    Publication statusPublished - 15 Apr 2021
    Event10th European Combustion Meeting - Virtual conference, Napoli, Italy
    Duration: 14 Apr 202115 Apr 2021
    Conference number: 10
    https://www.combustioninstitute.org/ci-event/10th-european-combustion-meeting/

    Conference

    Conference10th European Combustion Meeting
    Country/TerritoryItaly
    CityNapoli
    Period14/04/2115/04/21
    Internet address

    Keywords

    • computational parcels
    • CFD
    • Combustion
    • Swirl flow
    • spray flame
    • flame mode

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