Research on penetration of aviation kerosene injected into crossflows based on PLIF technique

In order to investigate the effects of liquid-to-air momentum and Weber number on jet penetration, the Planar Laser Induced Fluorescence (PLIF) was used to experiment the penetration characteristic of aviation kerosene. Liquid aviation kerosene was injected into crossflows through a plain orifice injector with a diameter of 0.5 mm. Laser (266 nm) generated by an Nd: YAG laser system was used to induce fluorescence of kerosene. Tests were conducted at the air pressure ranging from 0.3 to 0.6 MPa and an air temperature of 358 K. Liquid-to-air momentum flux ratio varied from 10 to 40, and Weber number covered the range from 170 to 340. Experimental results show that the penetration increased with the increase in liquid-to-air momentum flux ratio at different air pressure. Under the conditions of this paper, Weber number had no significant effect on the jet penetration. Based on the experimental results, a correlation was developed to accurately predict the effects of liquid-to-air momentum flux ratio, Weber number and axial distance on jet penetration over the range of conditions studied.