Accuracy of the Gamma Re-Theta Transition Model for Simulating the DU-91-W2-250 Airfoil at High Reynolds Numbers

Accurate computation of the performance a horizontal-axis wind turbine (HAWT) using Blade Element Momentum (BEM) based codes requires good quality aerodynamic characteristics airfoils. This paper shows numerical investigation transitional flow over DU 91-W2-250 airfoil with chord-based Reynolds number ranging from 3 × 106 to 6 106. The primary goal present is validate unsteady averaged Navier-Stokes (URANS) approach together four-equation transition SST turbulence model experimental data tunnel. main computational fluid dynamics (CFD) code used in this work was ANSYS Fluent. For comparison, two more CFD Transition were used: FLOWer and STAR-CCM +. obtained also compared results fully turbulent models published other works. XFOIL for comparison. force coefficients implemented different do not differ significantly each despite mesh distributions used. drag are too high. With lowest numbers analyzed work, error estimating location significant. decreases as increases. applicability uncalibrated two-dimensional thick up critical angle attack.