A numerical study of polydisperse spray flame ignition and extinction fronts in a mixing layer

J. B. Greenberg, L. S. Kagan, G. I. Sivashinsky

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

Abstract

A new numerical study of laminar polydisperse flame ignition and extinction fronts in a mixing layer resulting from opposed streams of fuel and oxidant is presented. Two quite different initial droplet size distributions having the same Sauter Mean Diameter (SMD) are considered. The phenomenon of hysteresis is found to occur for a high initial droplet load but disappears as the latter decreases. The range of strain rate values for which hysteresis is prevalent depends on the initial size distribution. For example, whilst under certain operating conditions, an extinction front may result from using one initial droplet size distribution, use of another size distribution, even having the same SMD, can exhibit hysteresis. Other features of the influence of the initial spray polydispersity are discussed in depth.

Original languageEnglish
Title of host publication53rd Israel Annual Conference on Aerospace Sciences 2013
Pages427-437
Number of pages11
StatePublished - 2013
Event53rd Israel Annual Conference on Aerospace Sciences 2013 - Tel-Aviv and Haifa, Israel
Duration: 6 Mar 20137 Mar 2013

Publication series

Name53rd Israel Annual Conference on Aerospace Sciences 2013
Volume1

Conference

Conference53rd Israel Annual Conference on Aerospace Sciences 2013
Country/TerritoryIsrael
CityTel-Aviv and Haifa
Period6/03/137/03/13

Funding

FundersFunder number
Lady Davis Fellowship Trust, Hebrew University of Jerusalem
United States-Israel Binational Science Foundation2012-057
Israel Science Foundation335/13
Health Care and Promotion Fund

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