Experimental study of free stream turbulence effects on dynamic stall of pitching airfoil by using particle image velocimetry

T. S. Leu, J. M. Yu, C. C. Hu, J. J. Miau, S. Y. Liang, J. Y. Li, J. C. Cheng, S. J. Chen

研究成果: Conference contribution

12 引文 斯高帕斯(Scopus)

摘要

The unsteady flow fields above NACA 0015 airfoil pitching with/without upstream turbulence generator are investigated in a water tunnel by mean of particle image velocimetry (PIV). The turbulence was generated by a square bar mesh situated at the inlet of the test section. The airfoil pitching waveform is performed under the condition calculated from the angle of attack histogram of a vertical axis wind turbine (VAWT). By using PIV, the instantaneous vortex structures above the pitching airfoil can be revealed. It allows us to study the free stream turbulence effects on dynamic stall over an airfoil at pitching waveform the same as VAWT. It is found that the free stream turbulence intensity has significant impacts on the dynamic stall process. The dynamic stall process is delayed to higher incidence angles on increasing the turbulence intensity.

原文English
主出版物標題AEROTECH IV - Recent Advances in Aerospace Technologies
頁面103-108
頁數6
DOIs
出版狀態Published - 2012 十二月 20
事件AEROTECH IV - 2012 - Kuala Lumpur, Malaysia
持續時間: 2012 十一月 212012 十一月 22

出版系列

名字Applied Mechanics and Materials
225
ISSN(列印)1660-9336
ISSN(電子)1662-7482

Other

OtherAEROTECH IV - 2012
國家Malaysia
城市Kuala Lumpur
期間12-11-2112-11-22

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • 引用此

    Leu, T. S., Yu, J. M., Hu, C. C., Miau, J. J., Liang, S. Y., Li, J. Y., Cheng, J. C., & Chen, S. J. (2012). Experimental study of free stream turbulence effects on dynamic stall of pitching airfoil by using particle image velocimetry. 於 AEROTECH IV - Recent Advances in Aerospace Technologies (頁 103-108). (Applied Mechanics and Materials; 卷 225). https://doi.org/10.4028/www.scientific.net/AMM.225.103