Study On Behavior and Breakup Process of Oil Jet Ejected from Curved Pipe

Abstract

The study focuses on the behavior of the oil jet that is ejected from a 90-degree bend pipe and the flow distribution within the pipe for jet Reynolds numbers Re (Re = Wmd/v, where Wm is the mean velocity of the oil jet, d is the nozzle diameter, and ν is the kinematic viscosity) ranging from 1500 to 3000. The oil jet is observed at 20,000 frames per second from four side viewpoints using the high-speed camera. It is discovered that a greater Re causes the oil jet contact to have a broader position and a bigger standard deviation. As Re increases, the jet interface starts to vary at the nozzle tip. Above Re=2500, droplets are produced from the jet interface and ligaments, and as Re grows, so does the droplet count. About half of the droplets are produced, with the majority of the 300μm- diameter droplets found on the inner side.