Abstract
The effects of sound pressure level at two observation positions of a fixed and varied blade pitch angle at Low-Mach unsteady incompressible Reynolds-Average Navier-Stokes flow approach, on an H-rotor Vertical Axis Wind Turbine. The objective of the study is to compare the noise dissipation and output power/energy of the airfoil blades design of the vertical axis wind turbine in residential zones. The Ffowcs Williams-Hawkings (FHWH) techniques were applied to validate the output noise and vortex shedding of the different angles of attacks (AoA). The study postulated that the time history of the calculated sound pressure level at two observers positions: the aeroacoustic, blade vortex interaction noise, flow separations, dynamic stall experience from varied angled of attacks are found to produces less noise and vortex shedding compared to the fixed angle of attack.
Highlights
There is a need for renewable energy globally, and wind energy is another alternative that can provide clean energy to residential areas
The results demonstrate that an SG6043 aerofoil blade with a chord length of c = 0.5m captures the most energy in the presence of varying or fixed angle-of-attack
The aeroacoustic spectra of the fixed and varied angle of attack were simulated and analyzed: for a vertical-axis wind turbine with blades derived from a static tip speed ratio of 0.56
Summary
There is a need for renewable energy globally, and wind energy is another alternative that can provide clean energy to residential areas. Wind energy has shown great potential since 2006 in China. A wind turbine is an attractive form of electricity production for residential households. The wind harnessing energy process comes with excellent noise pollution. The noise generated by the operating wind turbine significantly impacts surrounding residential areas, humans and animals, respectively. Mechanical noise and aerodynamic noise are two types of noise produced by wind turbines. Gearboxes, and generators are common sources of mechanical noise [2].
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