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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 languageAmerican English
Title of host publicationProceedings of the 5th International Conference on Jets, Wakes and Separated Flows, ICJWSF 2015
EditorsAntonio Segalini
Pages527-535
Number of pages9
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

Conference

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

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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