Characterization of Swirl Vane Injector

In this paper, swirl airflow Are characterized for various air Swirler geometries. The number of vanes, vane angle, Vane curvature, Sauter mean diameter and air velocity are varied for the swirling Airflow. Injector is one of the vital devices in liquid Propellant rocket engine (LPRE).Injector Parameters that play the important role in the performance of liquid propellant rocket engine. There are several mechanisms of liquid atomization such as swirling. The injector internal geometries reviewed are limited to swirler geometry, mixing chamber diameter, mixing chamber length, Aeration hole diameter, discharge orifice diameter and discharge orifice length. Introducing a swirl component in the flow can enhance the propellant atomization and mixing whereas introducing bubbling gas directly into the liquid stream inside the injector leads to finer sprays even at lower injection pressures. Wider spray cone angle is beneficial for widespread of fuel in the combustion chamber for fast quiet ignition and a shorter breakup length provides shorter combustion chamber to be utilized and small SMD will result in fast and clean combustion. This work may aid in the specific inquiry of physical mechanisms relating to the effect of flow states on spray distribution. It is found that improved atomization and mixing performance are a result of increase in swirl number.