Ignition of a reactive mixing layer

Spray or mixing layer combustion is concerned with the specific feature tha t the medium is largely non-homogeneous (in phase, species and temperature) , In consequence, numerical approach requires the use of a method accountin g for large variations of fluid density. We report results performed with a "low Mach number flow" method which efficiently describes the transient as pects of ignition, A particular configuration is investigated: a double mix ing layer GH(2)-LOx-GH(2), subjected to Kelvin-Helmholtz instability. This study gives the opportunity for complementary investigations about triple f lames which master ignition in nonhomogeneous media.