Experimental and Analytical Study of Performance Characteristics of Pressure-Swirl Duplex Injector

The research carried out is a study of spray behavior and a better understanding of the Pressure-Swirl Duplex Injector to improve its future design. Therefore, the effect of a number of functional parameters is expressed as a function of pressure, Reynolds and Weber numbers.Water was the experiment fluid and all of the experiments performed at atmospheric standard condition. Spray area shooting were carried out based on fast shooting method. The results show that increasing Reynolds number would tend to change trickle mode regime to atomization then fully developed regime would be dominated as Reynolds numbers further increases. Moreover, Increasing Reynolds numbers would increase spraying angel of both paths followed by maintaining at constant values. Due to Injector's design pressure is estimated equaling to 10 bars because lowest beak-up angel was achieved around this condition. Furthermore, spatial distribution and spraying area measurements showed that the injector has the significant performance to creating a symmetric corn hollow spraying pattern. Additionally, it was realized that discharge coefficient is not only dependent on the geometry of the injector and would raise while Reynolds changes.