1.Federal University of Minas Gerais (UFMG),Belo Horizonte,Brazil;2.Nuclear Technology Development Center (CDTN),Belo Horizonte,Brazil;3.Cia. Energética de Minas Gerais (CEMIG),Belo Horizonte,Brazil
Abstract:
We evaluate the Reynolds-averaged Navier–Stokes equations available as commercial computational fluid dynamics code for the
simulation of a neutral atmospheric boundary layer and attempt to define a proper numerical simulation procedure. Four turbulence
models, including two-equation and Reynolds stress models, were evaluated together with two near-wall models. Mesh and map
digitization sensitivity tests were also performed. The simulations were compared to experimental field data from the Askervein
Hill in Scotland. The results show that the simulations performed with ANSYS CFX 12.1 on a proper mesh and topological map
with a Reynolds stress turbulence model provided the best wind-speed predictions when compared to the experimental results.