Numerical Investigation of Bi-fluid Swirl Injector

In this paper a single swirl injector has been investigated by writing a computer code and then its results have been validated by experimental work. The process of spraying and atomization of fuel and oxidizer in double swirl injector have been simulated steady state with same experimental conditions. Then, a single swirl injector with atonal fuel has been modeled time dependent and finally a single and double swirl injectors with different fuels, including oil, crosin, liquid nitrogen, liquid hydrogen as fuel, water and oxygen as the oxidizing simulated. The goal of this simulation is to compare the droplets diameters and velocity of swirl injectors. It can be noted that the output droplet diameter of double base swirl injector is less than a single one and the velocity of double swirl injector is greater than single swirl injector.