Abstract
Fuel atomization greatly affects the combustion efficiency and uniformity of gas generator, therefore investigation on spray characteristics of injector is significative. In the present study, dual-orifice pressure-swirl injectors were designed and manufactured to meet the practical needs of mass flow rate and combustion performance of gas generator; water was used as the simulant medium for fuel, and Malvern optical instrument and SLA camera were applied to investigate the atomization characteristics of injectors. The results show that the mass flow rate, spray cone angle and Sauter Mean Diameter (SMD) all satisfy the design index request; the Sauter Mean Diameter decreases with the increase of injection pressure drop, but the decreasing tend becomes slow; when the spray develops to a certain position of injector exit, the Sauter Mean Diameter of axial sections keeps constantly.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
