Effect of temperature on atomization in gas centered coaxial injection systems

This paper summarizes the current status of research work carried out at IISc on the characterization of liquid sprays developing from gas centered coaxial injection systems. The coaxial system injects an annular swirling liquid sheet and a central gaseous jet. The interaction process between the swirling liquid sheet and the non-swirling gaseous jet results in a fine spray. The present study attempts to understand the effect of temperature on the atomization process of outer liquid sheet by conducting experiments with custom made gas centered swirl coaxial atomizers. Limited results show that the liquid temperature significantly influences the spray characteristics. The study also highlights the effect of orifice recess on the breakup behavior of liquid sheets.