Solution of the inverse problem of calculating a gas-liquid injector with a two-phase flow (Q6169883)

The authors consider the inverse problem of calculating a gas-liquid jet injector with a bubbly two-phase flow structure. The parameters governing the injector operation, such as the pressure difference, the orifice diameter, and the air concentration, are determined when the mean Sauter diameter is given. To this, end the operation of a mixer with a two-phase working body and injectors of different diameters was experimentally investigated in the bubbly operation regime with a water-air working body. In the experiments the parameters of the phases supplied to the mixer are measured, together with the pressure ahead of the injector. The dispersity and velocity parameters in the spray are measured using the laser shadow method. The statistics gathered allow to obtain the required correlation dependences which makes it possible to solve the problem formulated. The results obtained can be used in design different spraying devices in combustion chambers and other devices employing two-phase flows, nozzles and ejectors, and different mixing devices.