Design, Numerical Simulation and Experiment of a Swirl Injector with Tangential Inlets

In this paper, design and calculation method of a swirl injector with tangential inlets has been presented considering some known assumption. The injector designed based on the above method has been manufactured using CNC. Formation and development phenomena of air core within swirl injectors and their simulation is complicated due to two-phase swirl turbulent flow with common free surface. Therefore, in order to predict exit flow properties and investigate test results fitting, internal flow analysis has been performed. The results show agreement between numerical simulations and experiments, and air core has been formed correctly within injector. Two-phase and free surface simulations have been carried out using VOF method and turbulence has been modeled using k-e model. The results have been discussed completely in the text.