On the aeroacoustics of a propeller at low Reynolds number subjected to a grid-induced turbulent inflow

• Research highlight 1: Inflow inhomogeneity, due to the grid proximity, causes dominant tonal noise in the frequency band affected by ingested turbulence. • Research highlight 2: Blade-thickness blockage amplifies the effect of inflow inhomogeneity on unsteady loading and acoustics. • Research highlight 3: Upstream turbulence does not affect the mean flow over the blade and the first blade-passing frequency amplitude. • Research highlight 4: Upstream turbulence effects fade after reattachment; trailing-edge noise is unaffected. This work investigates the effect of grid-generated turbulence ingestion on noise generation in a propeller operating at a low Reynolds number using high-fidelity, scale-resolved…

• CD
  Compagnia di San Paolo
• PD
  Politecnico di Torino