Método mejorado de simulación multiescala del viento sobreterreno complejo para la evaluación del recurso eólico

Abstract

Due to the natural variability of wind and heavy reliance on local atmospheric conditions, it is necessary to conduct thorough wind resource assessments to determine how much energy can be generated at a given site [1]. Usually it requires advanced high resolution multi-scale models capable of simulating onshore wind farms installed on complex terrain. For this purpose, an enhanced numerical method was devised and adapted in the non-hydrostatic atmospheric model MC2 of Environment Canada with imbedded Large-Eddy Simulation (LES) capabilities for wind simulations over steep topography [2-3]. This implementation has been validated numerically by modeling the neutrally stratified wind for typical flat and mountainous terrain. From these tests it has been found that the new multi-scale method delivers very good results when compared with other models which use intensive computing methods [4-5]. This advanced method now has the ability to solve multi-scale structures using a new wind initialization and time discretization schemes that allow more stable and accurate numerical modeling in the presence of high impact topography [6-7]. The resulting model can be used to assess the wind resource at local, national and regional scales, ensuring a significant error reduction due to overestimation of the wind in mountainous areas. These advancements in wind modeling provide better tools for detailed studies required for planning and installing wind farms on cliffs and ridges, where a natural acceleration of the wind is expected.