The introduction of severe emissions regulation and the demand for a more sustainable mobility foreseen in the upcoming years have led car manufacturers to adopt innovative technologies to improve the efficiency and reduce vehicles emissions. In such a framework, the combined use of downsizing and turbocharging raised as one of the most promising solutions to improve the engine fuel economy, avoiding any lack of performance. Therefore, to maximize the effectiveness of this approach, a design of the turbocharger capable not only to optimize the aerodynamics, but also to minimize the mechanical losses seems to be crucial. As a result, this thesis aims to develop, within the GT-SUITE environment, a predictive model for the center housing of an automotive turbocharger, in order to forecast the oil flow of the system and the frictional power loss due to hydrodynamic effects.