A Numerical Simulation of Turbulence Flow around a Blade Profile of HAWT Rotor in Moving Pulse

A computation of three-dimensional flow past an isolated NACA0012 airfoil using Reynolds-averaged Navier -stokes equations (RANS) method is conducted. Tow closure models k-ε and SST are applied to the numerical prediction of the turbulent flow. A two-dimensional numerical simulation of oscillatory movement of the profile, based on solving URANS equations is then studied for the dynamic stall prediction. FlUENT s software is used for the numerical solution. Flow methodology for modelling 2-D unsteady viscous flow is presented and based on the incidence angle variation taken as a pulse using Gaussian function and oscillation forms. Results compared with experiment, show a very satisfactory agreement and highlight the need to take into account the unsteady flow and loads induced by movement of the structure