Numerical Simulation for Transient Flow of Automobile Engine Turbocharger

摘要

In order to explore the aerodynamic noise mechanism of automobile engine turbochargerrncompressor, a 3-dimensional unsteady mathematical model was established for turbochargerrncompressor. Numerical simulation for the transient flow of the turbocharger compressor was carriedrnout. The paper focused on the characteristics of pressure pulsation in the compressor. Thernsimulation results show the process of pressure fluctuation excitation from blade rotation in therncompressor, which provides the fluid dynamics information to study the compressorrnaerodynamic noise mechanism.