Wind turbine wake simulation with explicit algebraic Reynolds stress modeling

Abstract. Reynolds-averaged Navier–Stokes (RANS) simulations of wind turbine wakes are usually conducted with two-equation turbulence models based on the Boussinesq hypothesis; these simple and robust but lack capability predicting various phenomena. Using explicit algebraic Reynolds stress model (EARSM) Wallin Johansson (2000) can alleviate some deficiencies while still being numerically only slightly more computationally expensive than traditional models. The implementation is verified homogeneous shear flow, half-channel square duct flow cases, subsequently full three-dimensional wake run analyzed. results compared reference large-eddy simulation (LES) data, which show that EARSM especially improves prediction anisotropy intensity it also predicts less Gaussian profile shapes.