Analysis of internal Flow and cavitation in diesel injector nozzle

This study analyses the internal nozzle flow, the cavitation and its effect in the performance of diesel injector nozzle. Modeling has been carried out by the modification in the internal geometry of the injector nozzle with the help of the Computational Fluid Dynamics (CFD) interface. The effect on internal flow, turbulence, pressure and velocity has been assessed by modifying included angle of the injector. It was found that as the liquid fuel injection pressure has increased above 180 MPa, the effects of the cavitation in the nozzle and in the spray process shows significant increase.