Wake redirection: comparison of analytical, numerical and experimental models. Issue 3 (September 2016)

• Record Type: Journal Article
• Authors: Wang, Jiangang; Bottasso, Carlo L.; Campagnolo, Filippo
• Is Part Of: Journal of physics. Volume 753:Issue 3(2016)
• Publication Date: 2016-09
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/753/3/032064
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: This paper focuses on wake redirection techniques for wind farm control. Two control strategies are investigated: yaw misalignment and cyclic pitch control. First, analytical formulas are derived for both techniques, with the goal of providing a simple physical interpretation of the behavior of the two methods. Next, more realistic results are obtained by numerical simulations performed with CFD and by experiments conducted with scaled wind turbine models operating in a boundary layer wind tunnel. Comparing the analytical, numerical and experimental models allows for a cross-validation of the results and a better understanding of the two wake redirection techniques. Results indicate that yaw misalignment is more effective than cyclic pitch control in displacing the wake laterally, although the latter may have positive effects on wake recovery.