A Low Pressure Axial Fan for Benchmarking Prediction Methods for Aerodynamic Performance and Sound

D1 - Prediction of Axial Fan Noise by Hybrid Methods (i)

Great efforts into implementing numerical methods for performance and sound prediction can be observed in the fan and blower industry. Trust in results from simulation, however, often re-lies on experimental validation. The purpose of this paper is to describe the low pressure rotor-only fan "USI7" which has been used as a generic test fan in several projects at the University of Siegen and elsewhere for several years. We present our own experimental results such as per-formance and sound characteristics, turbulent inflow statistics and sound spectra as well as the test rigs employed to obtain the data. The idea behind is to foster benchmarking of present and new steady-state and unsteady aerodynamic and aero-acoustic prediction methods within the community. Thus, to any individual we will provide full geometry of the fan as well as all ex-perimental data.