Wind Resource Assessment with OpenFOAM: a real terrain case study
William Corrêa Radünz1; Adriane Prisco Petry1
1 UFRGS
doi:10.20906/CPS/CILAMCE2017-1160
Resumo
This paper presents a novel methodology for wind resource assessment in complex sites by employing the open-source C++ toolbox OpenFOAM. The framework consists in simulating the flow for at least twelve wind directions and applying a post-processing correction on the wind velocity field based on the measured wind data near Panambi. Subsequently, the wind maps are weighed by frequency of occurrence and overlapped into the overall wind power density map. A consistent combination of turbulence model, inflow conditions and wall-functions, which is able to produce a sustainable atmospheric surface layer, is achieved through the modification of standard wall-functions and the constants of the standard k − epsilon model. The assessed region demonstrated great potential for exploiting the wind resource, displaying wind power densities substantially enhanced due to the speed-up effect. Furthermore, it was possible to propose a layout strategy which maximized the power output whilst mitigating the likely effects of wake loss, although the latter has not been evaluated is the present work.
Palavras-chave: wind resource assessmnt; complex terrain; OpenFOAM