Technical Paper
CPU Efficient Flow-Acoustic Design for Axial Fans
2012-06-13
2012-01-1564
Low noise design of ventilation systems is an emerging topic in modern vehicle industry, since the thermal and acoustic comfort experienced by the passenger is even more important to define design criteria of HVAC components. Despite of the recent progresses of numerical approaches in the frame of aerodynamic and aeroacoustic simulation, the state of the art in Computational Fluid Dynamics (CFD) and Computational Aeroacoustics (CAA) is still far away to be capable to drive the design of low-noise targeted components. This is mainly due to the high complexity of physical phenomena involved in the noise generation mechanisms, mostly related to flow turbulence usually requiring approaches (e.g. Large Eddy Simulation, LES) with computational demands that cannot be easily afforded for industrial design purposes. The goal of this paper is providing an inexpensive, fast and reliable technique for the aeroacoustic simulation of broadband noise arising from axial fans.