Numerical Analysis of NREL 5MW Wind Turbine: A Study Towards a Better Understanding of Wake Characteristic and Torque Generation Mechanism

The Science of Making Torque from Wind

Siddiqui, M. Salman^1 ; Rasheed, Adil^2 ; Tabib, Mandar^2 ; Kvamsdal, Trond^1,2

Department of Mathematical Sciences, Norwegian University of Science and Technology, Trondheim

NO-7491, Norway^1

SINTEF ICT, Department of Applied Mathematics, Postboks 4760 Sluppen, Trondheim

NO-7465, Norway^2

关键词: Multiple-reference frames;    Near and far wakes;    Off-shore wind energy;    Predictive capabilities;    Tip speed ratio;    Torque generation;    Turbulence intensity;    Wake dynamics;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/753/3/032059/pdf
DOI  :  10.1088/1742-6596/753/3/032059

来源: IOP

【 摘 要 】

With the increased feasibility of harvesting offshore wind energy, scale of wind turbines is growing rapidly and there is a trend towards clustering together higher number of turbines in order to harvest maximum yield and to leave a smaller footprint on the environment. This causes complex flow configurations inside the farms, the study of which is essential to making offshore wind energy a success. The present study focuses on NREL 5MW wind turbine with the following objectives (a)To compare Sliding Mesh Interface and Multiple Reference Frame modeling approaches and their predictive capabilities in reproducing the characteristics of flow around the full scale wind turbine. (b)To get a better insight into wake dynamics behind the turbine in near and far wake regions operating under different tip-speed-ratio and incoming turbulence intensities.