COMBUSTION WAVE DEVELOPMENT IN ENCLOSED H-2 O-2 MIXTURES ENRICHED WITH CARBONACEOUS PARTICLES/

A one-dimensional mathematical approach is proposed to study gaseous f lame reactions in the presence of reactive particles. The non-stationa ry model is based on the reactive Navier-Stokes equations for the gas phase, and on the reactive Euler equations for the particle phase, bot h phases being modeled as continua. The flux terms were treated by flu x difference splitting schemes. Calculations were performed for a conf ined stoichiometric hydrogen/oxygen mixture enriched with carbonaceous particles and ignited y a temperature non-uniformity. The results sho w that the presence of particles has a damping influence on the igniti on-induced pressure wave. The peak pressure and its propagation veloci ty decrease, and the sharp contour of the pressure wave is smeared out compared to the particle-free case. The increase of the temperature i n the reaction zone is reduced due to heat absorption in case of non-r eacting particles. With increasing particle reactivity, the equilibriu m temperature is achieved earlier and the temperature level increases.