Diesel Generator Aeroacoustics
Dr. Theresa Robinson
Dr. Mark Bell
Aeroacoustics is the study of noise due to turbulence in the flowfield. In this project, diesel generators are renowned for their noise. There are many sources, which include the engine firing, the alternator and the vibration of the enclosure panels. Of interest was the contribution to the total noise signature of the cooling fan, due to the blade interaction with turbulent flow.
Computational fluid dynamics is being used to model the internal air flow of a diesel generator set, enabling the prediction of the unsteady pressures (acoustic sources) on the cooling fan blades.
These acoustic sources are later used in an acoustics solver using a boundary element method to obtain the near-field sound pressure level for comparison to experimental data.