@inproceedings{346ec2dd7de6407ea9c4f6e2c80ed4cc,
title = "Study on Unsteady Flow Field Structure and Tip Vortex Evolution of Contra-rotating Wind Turbine",
abstract = "To investigate the pulsatile flow field structure and tip-vortex evolution of a contra-rotating wind turbine (CRWT), three-dimensional unsteady flow simulation was carried out with auxiliary wind tunnel test. The model is based on the dynamic patched-gird and sliding grid technologies to solve the unsteady Reynolds Averaged Navier-Stokes (URANS) equations. Meanwhile, a steady CRWT flow field simulation with S-A turbulent model was carried out to solve URANS equations to serve as a comparison. The turbine powers predicted by both models were validated with experiment data and the local velocity distributions on meridian plane near blade tip were compared with Particle Image Velocimetry (PIV) results. The results show that the unsteady simulation is accurate for power prediction, and the relative error is less than 5.68\%. The tip vortex distribution law obtained by CFD is consistent with the captured results of the PIV experiment, which proves the accuracy of the CFD simulation, and the evolution of the vortex structure between the blades of the CRWT is obtained. Finally, by comparing the flow field structure of SRWT and CRWT, the structural characteristics of the contra-rotating flow field are further analyzed.",
keywords = "Aerodynamic interference, Contra-rotating wind turbine, Numerical simulation, Unsteady flow, Vortex structure",
author = "Kang, \{M. H.\} and X. Zhao and Ge, \{M. W.\} and Bi, \{Y. F.\} and Li, \{H. Y.\}",
note = "Publisher Copyright: {\textcopyright} 2021, American Institute of Aeronautics and Astronautics Inc.. All rights reserved.; AIAA Propulsion and Energy Forum, 2021 ; Conference date: 09-08-2021 Through 11-08-2021",
year = "2021",
doi = "10.2514/6.2021-3367",
language = "英语",
isbn = "9781624106118",
series = "AIAA Propulsion and Energy Forum, 2021",
publisher = "American Institute of Aeronautics and Astronautics Inc, AIAA",
booktitle = "AIAA Propulsion and Energy Forum, 2021",
}