A NUMERICAL STUDY OF THE RELATION BETWEEN WAKE STRUCTURE AND WIND FLUCTUATION

抄録

In this study, a simulation of a wind turbine wake are performed to investigate distributions of wind fluctuation by using unsteady computational fluid dynamics (CFD). In this CFD framework, rFlow3D, which was developed by Japan Aerospace Exploration Agency (JAXA) was used. Higher-order scheme (4th order) is applied in time and space respectively. Moreover, it can solve full rotor simulation and reproduce fluctuations generated by a wind turbine. Time-series data of wind velocities in wake region are obtained to evaluate distributions of wind fluctuations. The result confirmed that wind distributions in wake region are not uniform along radial positions.