Experimental study on spray characteristics of RP-3 kerosene under the near critical condition with different injection conditions

Abstract In an aero-engine, the effect of oil-gas mixing directly affects working condition combustion chamber, and process RP-3 kerosene near near-critical point is more complicated because its physical properties are strongly affected by own temperature pressure changes. The injection was photographed under different conditions using high-speed ripple shadowing technology. It found that increase in air distance from nozzle outlet to cyclone would reduce jet expansion angle width. former jet’s self-excited oscillation frequency, latter it.