EFFECT OF REYNOLDS NUMBER AND WEBER NUMBER ON THE ESTIMATION OF DROPLET SIZE FOR AN INJECTOR

A numerical study has been conducted to assess the effect of Reynolds number and Weber number on the size of the droplets produced from an injector. With changing combustion chamber pressures, the non-dimensional parameters also vary, which in turn influences the Sauter mean diameter of the droplets. These two parameters become the deciding factors for an injector design. In this paper, the results are compared for two sets of oxidizer and fuel orifice number ratios. The most suitable injector design is selected based on its performance given out by the interaction of the non-dimensional parameters on the droplet size.