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
CountryItaly
CityNapoli
Period14/04/2115/04/21
Internet address

Keywords

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

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