Effect of Upstream Side Flow of Wind Turbine on Aerodynamic Noise: Simulation Using Open-Loop Vibration in the Rod in Rod-Airfoil Configuration

Adaptive and flexible control techniques have recently been examined as methods of controlling flow reducing the potential noise in vertical axis wind turbines. Two-Dimensional (2D) fluid simulation around rod-airfoil is addressed this study a simple component turbine by using Unsteady Reynolds Averaged Navier–Stokes (URANS) equations for prediction Ffowcs Williams-Hawkings (FW-H) analogy. To reduce noise, active vibration rod method utilized with maximum displacement ranging from 0.01 C to 1 (C: airfoil chord). Acoustic assessment indicates that leading edge blade produces applying cylinder, 0.1 decreases 22 dB 35 dB, respectively. Applying aerodynamically helpful since it reduces fluctuations lift force approximately 48% those about 46%. Strouhal (frequency) shows application accompanied 20% increase. blade, thus noise. This idea, example, can be used incoming turbines their blades are affected upstream flow.