Visualization of features of atomizing circular liquid sheet using simultaneous Volume Laser-Induced Fluorescence

Schematic of liquid sheet showing different features originating during its atomization process. [Display omitted] •Three sources of droplet production are rim, perforation edges and liquid bridge.•Droplets produced at the rim follow D10 ~ (Wejet)−1/4 and D32 ~ (Wejet)−1/5.•Droplets originating from the perforations are weak function of Wejet. Present work is an experimental investigation of primary atomization of a radially expanding circular liquid sheet produced from a cylindrical vertical water jet issuing out from the convergent nozzle and impinging orthogonally on a horizontally placed cone-disc deflector below the nozzle. The radially expanding thin circular water sheet formed from the peripheral edge of deflector disc. The atomization process of expanding liquid sheet is captured simultaneously for the first time in the top and side views using a high-speed Volume Laser-Induced Fluorescent (VLIF). The experiments were conducted at 6 kHz framing rate for various jet Weber numbers (Wejet) over a range of 996