Semi-empirical analysis of liquid fuel and fuel vapor distributions downstream of a plain-orifice injector with cross-stream air flow

A flat-fan spray model for the semi-empirical analysis of the liquid-fuel distribution downstream of a plain-orifice injector with cross-stream air flow, proposed by Chin et al. (1981, 1982), is modified and extended to include the effects of fuel evaporation and turbulent diffusion of fuel vapor. The total fuel concentration at any point in the flow is obtained as the sum of the liquid and vapor concentrations. To illustrate the liquid fuel, fuel vapor, and total fuel distributions predicted by the model, an example is given. It is shown that the model is capable of predicting the effects of variations in the fuel properties, air properties, and geometrical parameters. A useful practical tool for the design and development of afterburners and main combustors is provided by the proposed model.