Direct numerical simulations of spray spark ignition

Abstract

Direct Numerical Simulations (DNS) of a mono-disperse spray in a turbulent flow have been used to explore the nature of flame kernels when a spark is deposited in the spray. The simulations use complicated chemistry and are done with the code SENGA2, which has been used for a variety of other turbulent flame problems. For details, see: (i) A. Neophytou's PhD thesis; (ii) Neophytou, A, Mastorakos, E. and Cant, R. S. (2010) DNS of spark ignition and edge flame propagation in turbulent droplet-laden mixing layers. Combustion and Flame 157, 1071-1086. doi:10.1016/j.combustflame.2010.01.019; (iii) Neophytou, A., Mastorakos, E. and Cant, R.S. (2011) Complex chemistry simulations of spark ignition in turbulent sprays. Proceedings of the Combustion Institute 33, 2135-2142. doi:10.1016/j.proci.2010.06.022 ; (iv) Neophytou, A., Mastorakos, E. and Cant, R.S. (2012) The internal structure of igniting turbulent sprays as revealed by complex chemistry DNS. Combustion and Flame 159, 641-664. doi: 10.1016/j.combustflame.2011.08.024.