On simple theoretical models of two-phase flows associated with combustion

In the paper an analysis of basic physical and chemical processes, which should be taken into account in the equations of motion of two-phase media, is given. It is supposed, that the gas flow with solid or liquid particles takes place. The equations of one-fluid and two-fluid are presented. The examples of reaction schemes are considered and the conditions on shock waves and detonation waves are studied. Simple one-dimensional problems for two-phase flows are also considered. Parameters of similarity of the processes of detonation and combustion in the mixture are determined and the questions on initiating of detonation by a point source are discussed.