Evolution and breakdown of helical vortex wakes behind a wind turbine
نویسندگان
چکیده
A. Nemes1, M. Sherry, D. Lo Jacono1,2,3, H. M. Blackburn4 and J. Sheridan1 1 Fluids Laboratory for Aeronautical and Industrial Research (FLAIR), Department of Mechanical and Aerospace Engineering, Monash University, Melbourne, Vic 3800, Australia 2 Université de Toulouse; INPT, UPS; IMFT; Allée Camille Soula, F-31400 Toulouse, France 3 CNRS; IMFT; F-31400 Toulouse, France 4 Department of Mechanical and Aerospace Engineering, Monash University, Melbourne, Vic 3800, Australia
منابع مشابه
Dynamic wind loads and wake characteristics of a wind turbine model in an atmospheric boundary layer wind
An experimental study was conducted to characterize the dynamic wind loads and evolution of the unsteady vortex and turbulent flow structures in the near wake of a horizontal axis wind turbine model placed in an atmospheric boundary layer wind tunnel. In addition to measuring dynamic wind loads (i.e., aerodynamic forces and bending moments) acting on the wind turbine model by using a high-sensi...
متن کاملEffects of incoming surface wind conditions on the wake characteristics and dynamic wind loads acting on a wind turbine model
Articles you may be interested in Decay of the supersonic turbulent wakes from micro-ramps The interaction of helical tip and root vortices in a wind turbine wake Distribution of spanwise enstrophy in the near wake of three symmetric elongated bluff bodies at high Reynolds number Large eddy simulation study of scalar transport in fully developed wind-turbine array boundary layers Phys. Effect o...
متن کاملMicrosoft Word - Electronic Delivery Cover Sheet.docx
Modern designs for straight-bladed vertical axis wind turbines (VAWTs)feature smaller individual footprints than conventional horizontal axis wind turbines (HAWTs), allowing closer spacing of turbines and potentially greater power extraction for the same wind farm footprint. However, the wakes of upstream turbines could persist far enough to affect the performance of closely-spaced downstream t...
متن کاملDetermination of Wind Turbine Near-Wake Length Based on Stability Analysis
A numerical study on the wake behind a wind turbine is carried out focusing on determining the length of the near-wake based on the instability onset of the trailing tip vortices shed from the turbine blades. The numerical model is based on large-eddy simulations (LES) of the Navier-Stokes equations using the actuator line (ACL) method. The wake is perturbed by applying stochastic or harmonic e...
متن کاملSimulation of wind turbine wakes using the actuator line technique.
The actuator line technique was introduced as a numerical tool to be employed in combination with large eddy simulations to enable the study of wakes and wake interaction in wind farms. The technique is today largely used for studying basic features of wakes as well as for making performance predictions of wind farms. In this paper, we give a short introduction to the wake problem and the actua...
متن کامل