ECIS Publications

Description

This work compares the aerodynamic and aeroacoustic predictions for flatback airfoil
geometries obtained by applying advanced turbulence modeling simulation techniques
within Computational Fluid Dynamics (CFD) methods that resolve the Reynolds-Averaged
Navier-Stokes (RANS) equations of motion. These flatback airfoil geometries are designed
for wind turbine applications. Results from different CFD codes using hybrid RANS-LES
and RANS turbulence simulations are correlated and include analysis with experimental
data. These data comparisons include aerodynamic and a limited amount of aeroacoustic
results. While the mean lift prediction remains relatively insensitive across many simulation
techniques and parameters, the mean drag prediction is dependent on both the grid and
turbulence simulation method. Aeroacoustic predictions obtained from post-processing of
the airfoil surface pressure agree reasonably well with experimental data when consistent
boundary layer tripping is used for both the simulation and experimental configuration.