Full wind rose wind farm simulation including wake and terrain effects for energy yield assessment

NAVARRO DIAZ, GONZALO P.; SAULO, A. CELESTE; OTERO, ALEJANDRO D.

ENERGY

PERGAMON-ELSEVIER SCIENCE LTD

Año: 2021 vol. 237

0360-5442

In this work, CFD simulation in conjunction with the complete site wind rose are used for the first time to estimate a key magnitude for the project development of a wind farm, the capacity factor, which is directly related with the energy yield.%The large computational cost that restricted CFD simulation for such a task is drastically reduced by means of a novel interpolation-extrapolation methodology. This only requires the simulation of 3 inlet reference velocities for each wind rose sector, in order to take into account the effect of the terrain and wind turbine wakes interaction.A comparative study is carried out, in which the measured capacity factor of an onshore wind farm in the Argentinean Patagonia is compared against different solution approaches.In the particular case of this wind farm, it is found that the separate effects of wakes and terrain produce errors in the opposite sense, and results very close to the measured value are achieved when both are considered. Also, the increase in the number of simulated direction sectors from 16 to 32 does not significantly change the results.