On the development of detonation with pre-ignition

Abstract

Importance of pre-ignition to the development of detonation is examined on the basis of a wavedynamic analysis of schlieren photographs obtained by Schmidt, Steinicke and Neubert. Present results complement those published at the Seventh Combustion Symposium for the case without pre-ignition. Although a definite stimulating effect of pre-ignition has been noticed, characteristic features of both solutions being the same, it is concluded that progress of the process, expressed in terms of intermediate states that must be attained in the course of its development, is essentially the same in both cases.