The needs for accurate and efficient numerical solvers in computational aeroacoustics have motivated the development of low-dispersion and low-dissipation schemes as an alternative to more classical methods of applied mathematics for computational fluid mechanics over the last two decades. These numerical methods have now reached maturity, even if progress is still necessary to take account of ...

Abstract Experimental and numerical results of a propeller 0.3 m diameter operated at 5000 RPM axial velocity ranging from 0 to 20 m/s advance ratio 0.8 are presented as preliminary step towards the definition benchmark configuration for low Reynolds number aeroacoustics. The corresponding rotational tip Mach is 0.23 based on blade sectional chord flow varies about 46000 106000 in operational d...

Abstract Sustainability has encouraged studies focusing on lowering the aeroacoustic impact of new aerodynamically optimized mechanical systems for several applications in wind-energy, aviation, automotive and urban air-mobility. The deployment effective noise-reduction strategies starts with a deep understanding underlying mechanisms noise generation. To elucidate physics behind onset aerodyna...