Development and Application of a Quasi-3D Model for the Simulation of Radial Compressors of Turbochargers for Internal Combustion Engines
Although the characterization of turbochargers group has been historically performed by means of experimental analysis, the development of processors and software, together with the necessity of reducing the prototyping costs, has lead computational fluid-dynamic to be a possible alternative for determining the engine-turbo matching without resorting to detailed maps. In this work 3Dcell method, a quasi3D approach, developed by the Internal Combustion Engine Group at Politecnico di Milano, has been customized and applied to for the fluid dynamic simulation of fluid machines with rotating components (compressor impellers or turbine rotors). The 3Dcell is based on a pseudo-staggered leapfrog method applied to the governing equation to a 1D problem arbitrarily oriented in space. As mention above, 3Dcell has been developed for acoustic simulation for simple and motionless geometries.