Abstract
The origin and propagation of detonation in two-phase systems is of interest because of problems in fire and explosion prevention in the transport of oxidizers. Detonation above a fuel layer is a nonuniform complex. To determine the mass supply of fuel in the case of detonation of a pipe filled with gaseous oxidizer, the two-dimensional problem of shock propagation in a halfspace of gaseous oxidizer above a fuel space is examined. Equations for conservation of mass flux of the 1-th component, and of energy in the liquid fuel layer and boundary layer, among others, are derived. Equations comprise a closed system to determine the mass delivery of fuel to the boundary layer. Secondary shocks are then considered. The theory of concentrated explosion with counterpressure is used to determine secondary wave parameters. The continuous propagation of a detonation wave over a spiral is considered. The results of a secondary shock interaction with the bow wave is determined by approximate graphoanalytic method. Finally, a factor is arrived at to determine the minimal shock velocity capable of initiating two-phase separation above a fuel layer.
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