2013/10/11 by Jessica L. Bashioum, Bashioum, Jessica L., Pankaj Jha +5
Engineering · Environmental Science · #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Fluid Dynamics and Vibration Analysis #Wind Energy Research and Development #Wind and Air Flow Studies
paper · pdf · doi:10.48550/arxiv.1310.3294
openalex publication_date 2013/10/11 · openalex created_date 2025/10/24 · openalex updated_date 2026/07/28
The fluid dynamics video considers an array of two NREL 5-MW turbines\nseparated by seven rotor diameters in a neutral atmospheric boundary layer\n(ABL). The neutral atmospheric boundary-layer flow data were obtained from a\nprecursor ABL simulation using a Large-Eddy Simulation (LES) framework within\nOpenFOAM. The mean wind speed at hub height is 8m/s, and the surface roughness\nis 0.2m. The actuator line method (ALM) is used to model the wind turbine\nblades by means of body forces added to the momentum equation. The fluid\ndynamics video shows the root and tip vortices emanating from the blades from\nvarious viewpoints. The vortices become unstable and break down into\nlarge-scale turbulent structures. As the wakes of the wind turbines advect\nfurther downstream, smaller-scale turbulence is generated. It is apparent that\nvortices generated by the blades of the downstream wind turbine break down\nfaster due to increased turbulence levels generated by the wake of the upstream\nwind turbine.\n