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Journal of Renewable Energy
Volume 2013, Article ID 839319, 17 pages
Research Article

Computational Study on the Aerodynamic Performance of Wind Turbine Airfoil Fitted with Coandă Jet

1Universitas Al Azhar Indonesia, Kebayoran Baru, Jakarta 12110, Indonesia
2Department of Aerospace Engineering, Universiti Putra Malaysia, 34400 Serdang, Selangor, Malaysia
3Faculty of Manufacturing Engineering, University Malaysia Pahang, 26300 Kuantan, Pahang, Malaysia

Received 16 January 2013; Accepted 2 April 2013

Academic Editor: Wei-Hsin Chen

Copyright © 2013 H. Djojodihardjo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Various methods of flow control for enhanced aerodynamic performance have been developed and applied to enhance and control the behavior of aerodynamic components. The use of Coandă effect for the enhancement of circulation and lift has gained renewed interest, in particular with the progress of CFD. The present work addresses the influence, effectiveness, and configuration of Coandă-jet fitted aerodynamic surface for improving lift and , specifically for S809 airfoil, with a view on its incorporation in the wind turbine. A simple two-dimensional CFD modeling using - turbulence model is utilized to reveal the key elements that could exhibit the desired performance for a series of S809 airfoil configurations. Parametric study performed indicates that the use of Coandă-jet S809 airfoil can only be effective in certain range of trailing edge rounding-off radius, Coandă-jet thickness, and momentum jet size. The location of the Coandă-jet was found to be effective when it is placed close to the trailing edge. The results are compared with experimental data for benchmarking. Three-dimensional configurations are synthesized using certain acceptable assumptions. A trade-off study on the S809 Coandă configured airfoil is needed to judge the optimum configuration of Coandă-jet fitted Wind-Turbine design.