Design and characterization of Liquid Centered Swirl-Coaxial injector

Abstract

The experimental methodology to perform droplet size distribution of Liquid Centered Swirl-Coaxial injector (LCSC) using simultaneous Planar Laser-Induced Fluorescence (PLIF) technique and MIE scattering is demonstrated. The fluid used for spray characterization is water with required quantities of the organic dye Rhodamine 6 g for PLIF measurements. The injector performance is evaluated in terms of relative droplet size distribution and spray divergence angle. The droplet size distribution indicated that the relative SMD of droplets along the axial location of the spray is uniform throughout. It is also observed that the improved performance in spray divergence angle could be achieved by recessing the height of liquid passage with reference to the oxidizer.