抄録
Aiming at the elucidation of the phenomena occurring in the process of ignition of a premixed spray column behind a reflected shock, a slightly detailed calculation of one-dimensional gas dynamics, detection of ion current, and spectroscopic observations of the light emissions in UV, visible and IR zones were carried out as well as observations by high-speed photography. As a result, it was found that the ignition process of a spray column was initiated with the initial oxidation reaction of the lean fuel vapor dispersed throughout the spray column followed by the growth of the reaction into a visible blue flame, and that the development of the ignition process thereafter was governed not only by the temperature but also by the flow and mixing patterns.
