A Ffowcs Williams-Hawkings numerical aeroacoustic study of varied and fixed-pitch blades of an H-Rotor vertical axis wind turbine

The effects of sound pressure level at two observation positions a fixed and varied blade pitch angle Low-Mach unsteady incompressible Reynolds-Average Navier-Stokes flow approach, on an H-rotor Vertical Axis Wind Turbine. objective the study is to compare noise dissipation output power/energy airfoil blades design vertical axis wind turbine in residential zones. Ffowcs Williams-Hawkings (FHWH) techniques were applied validate vortex shedding different angles attacks (AoA). postulated that time history calculated observers positions: aeroacoustic, interaction noise, separations, dynamic stall experience from angled are found produces less compared attack.