Experimental Studies on Liquid Film Thickness Measurement and the Formation of Air Core in a Swirl Injector

스월 인젝터에서 액막두께 측정과 Air Core의 구조에 관한 실험적 연구

A specially designed injector using electric conductivity was used to measure the liquid film thickness accurately. The measurement conducted through the precise calibration, accuracy is demonstrated in comparison with the previous theory and the results using other measurement method. The tendency of liquid film thickness for geometric parameters was examined by the precise measurement. The variation of air core and stability are examined through the visualization of the formation of air core in swirl chamber and the variation of liquid film thickness by the time.