The Distributions of Flow Rate and Mixing Ratio of Two Impinging Jets

Abstract

The distributions of flow rate and mixing ratio are studied about a spray generated by two impinging jets which are generally used for bipropellant liquid rocket systems using hypergol. The propellant system was simulated by a water model. When two jets impinge together, the total mixing efficiency varies with the impinging angle ; it has a minimum value when the impinging angle is nearly 90°. When jets impinge together with different injection pressures from orifices of same sizes, the total mixing effciency decreases as the difference of the pressure increases. When the injection pressure is same and the dimentions of orifices are different, the total mixing efficiency varies with the increase of diameters, but the variation is small. When two jets are composed of immiscible liquids, the state of mixing is basically the same as that of miscible liquids.