Validation of the actuator disc and actuator line techniques for yawed rotor flows using the New MEXICO experimental data

Wake Conference 2017

Breton, S.-P.^1 ; Shen, W.Z.^2 ; Ivanell, S.^1

Uppsala University Campus Gotland, Cramérgatan 3, Visby

62 157, Sweden^1

Technical University of Denmark, Energivej, Kgs. Lyngby

2800, Denmark^2

关键词: Actuator disc;    Actuator line technique;    Airfoil datum;    Blade loading;    Blade tip vortex;    High quality;    Velocity field;    Yawed inflow;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/854/1/012005/pdf
DOI  :  10.1088/1742-6596/854/1/012005

来源: IOP

【 摘 要 】

Experimental data acquired in the New Mexico experiment on a yawed 4.5m diameter rotor model turbine are used here to validate the actuator line (AL) and actuator disc (AD) models implemented in the Large Eddy Simulation code EllipSys3D in terms of loading and velocity field. Even without modelling the geometry of the hub and nacelle, the AL and AD models produce similar results that are generally in good agreement with the experimental data under the various configurations considered. As expected, the AL model does better at capturing the induction effects from the individual blade tip vortices, while the AD model can reproduce the averaged features of the flow. The importance of using high quality airfoil data (including 3D corrections) as well as a fine grid resolution is highlighted by the results obtained. Overall, it is found that both models can satisfactorily predict the 3D velocity field and blade loading of the New Mexico rotor under yawed inflow.