TY - GEN
T1 - A numerical study of polydisperse spray flame ignition and extinction fronts in a mixing layer
AU - Greenberg, J. B.
AU - Kagan, L. S.
AU - Sivashinsky, G. I.
N1 - Funding Information:
LSK and GIS gratefully acknowledge the support the Israel Science Foundation (Grants 335/13) and the Binational Science Foundation (Grants 2012-057). JBG thanks the Technion Fund for the Promotion of Research and the Lady Davis Chair in Aerospace Engineering supporting this research.
PY - 2013
Y1 - 2013
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84881593269&partnerID=8YFLogxK
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AN - SCOPUS:84881593269
SN - 9781627481144
T3 - 53rd Israel Annual Conference on Aerospace Sciences 2013
SP - 427
EP - 437
BT - 53rd Israel Annual Conference on Aerospace Sciences 2013
T2 - 53rd Israel Annual Conference on Aerospace Sciences 2013
Y2 - 6 March 2013 through 7 March 2013
ER -