Numerical Study of a Wind Turbine Blade Modification Using 30° Angle Winglet on Clark Y Foil

  • Nu Rhahida Arini Power Plant Engineering Study Program, Politeknik Elektronika Negeri Surabaya, Indonesia
  • Gilang Muhammad Power Plant Engineering Study Program, Politeknik Elektronika Negeri Surabaya, Indonesia
  • Joke Pratilastiarso Power Plant Engineering Study Program, Politeknik Elektronika Negeri Surabaya, Indonesia
  • Setyo Nugroho Scholl of Mechanical Engineering, The University of Adelaide, Australia
Keywords: Winglet, Wind Turbine Blade, CFD, OpenFOAM


The depletion of fossil fuels and the worsening environment motivate engineers and researchers to explore renewable energy resources. One of the promising renewable energy is wind energy. The wind turbine extracts wind energy to generate electricity. This study aims to modify a wind turbine blade using Clark Y foil to improve the lift force. The modification is employed by forming a winglet profile with a 30° angle on the foils tip. The result shows that the 30° winglet enlarges the lift coefficient to 1.3253 from 1.2795 of the original blade lift coefficient. 


Download data is not yet available.


Nu Rhahida Arini, Stephen Turnock, Mingyi Tan. Technique For Lock-In Prediction In A Fluid Structure Interaction Of NACA 0012 With High RE. Emitter International journal of engineering technology 2020, Volume: 8 DOI:

Blanco, M. I. The economics of wind energy. In Renewable and Sustainable Energy Reviews (Vol. 13, Issues 6–7, pp. 1372–1382). 2009 DOI:

Nu Rhahida Arini, Teguh Hady A, Achmad R. Fluid Dynamic Analysis on Vertical Axis Tidal Turbine Design for Predicting Its Performance for Indonesian Ocean. ICESTi Journal. 2014, volume 1.

Febi Ponwin, S. P. R., & Rajkumar, S. Methods for Improving Lift Force of Wind Turbine Aerofoil Blades during Low Wind Speed Conditions – A Review. Applied Mechanics and Materials, 787, 134–137., 2015. DOI:

Udalov, S. N., Achitaev, A. A., & Tarbill, R. D. Increasing the regulating ability of lift force in the power-limited mode of wind turbines based on plasma technology. Wind Engineering, 41(1), 91–100. 2017. DOI:

Ali, S., & Jang, C. M. Effects of Tip Speed Ratios on The Blade Forces of A Small H-Darrieus Wind Turbine. Energies, 14(13)., 2021. DOI:

Didane, Djamal & Mohd, Sofian & Subari, Z & Rosly, Nurhayati & Abdul Ghafir, Mohd Fahmi & Masrom, Mohd. An aerodynamic performance analysis of a perforated wind turbine blade. IOP Conference Series: Materials Science and Engineering. 160. 012039. 10.1088/1757-899X/160/1/012039, 2016. DOI:

Handsaker, S., Ogbonna, I., & Volkov, K. Cfd Prediction of Performance of Wind Turbines Integrated in The Existing Civil Infrastructure. Sustainability (Switzerland) (2021), 13(15). DOI:

Setyo Nugroho, Lohdy Diana, Joke Pratilastiarso, Erik Tridianto, Agus Indra Gunawan. Experimental Study on Clark Y Horizontal Axis Wind Turbine with Winglet. 2018 International Conference in Applied Science and Technology (ICAST), 2018. DOI:

Mohamed G Khalafallah, Abdelnaby M Ahmed, Mohamed K Emam. The effect of using winglets to enhance the performance of swept blades of a horizontal axis wind turbine. Advances in Mechanical Engineering vol 11(0) 1-10, 2019. DOI:

Mourad MG, Shahin I, Ayad SS, Abdellatif OE, Mekhail TA. Effect of winglet geometry on horizontal axis wind turbine performance. Eng Reports. 2020;2(1):1–19. DOI:

Lalit Kumar gaur, M.K gaur., CS Malvi. CFD analysis on Wind blade. International Journal of Advance Research in Science and Engineering, 2015.

Mohammad Sayed, Hamdy A. Kandil, Elsayed Imam Morgan. Computational Fluid Dynamics Study of Wind Turbine Blade Profiles at Low Reynolds Numbers for Various Angles of Attack. ENERGY CONVERSION AND MANAGEMENT., November 2014. DOI:

Rezaeiha A, Kalkman I, Blocken B. CFD simulation of a vertical axis wind turbine operating at a moderate tip speed ratio: Guidelines for minimum domain size and azimuthal increment. Renew Energy [Internet]. 2017; 107:373–85. Available from: DOI:

Engin Leblebici, İsmail H. Tuncer. Wind Power Estimations using OpenFOAM Coupled with WRF. 11th EAWE PhD Seminar on Wind Energy in Europe 23-25, September 2015.

Nguyen Ngoc Hoang Quana,*, Pham Van Lamb, Le Van Longc. Wind Turbine Blade Design Optimization using OpenFOAM and DAKOTA software. 1st International Conference on Aviation Future: Challenge and Solution, 2020.

Daniele E. Wind turbine control in computational fluid dynamics with OpenFOAM. Wind Eng. 2017;41(4):213–25. DOI:

Lee JH, Lee YT, Lim HC. Effect of twist angle on the performance of Savonius wind turbine. Renewable Energy. 2016 Apr 1; 89:231-44. DOI:

Alkhabbaz A, Yang HS, Weerakoon AS, Lee YH. A novel linearization approach of chord and twist angle distribution for 10 kW horizontal axis wind turbine. Renewable Energy. 2021 Nov 1; 178:1398-420. DOI:

Abdelsalam AM, El-Askary WA, Kotb MA, Sakr IM. Experimental study on small scale horizontal axis wind turbine of analytically-optimized blade with linearized chord twist angle profile. Energy. 2021 Feb 1; 216:119304. DOI:

Liu X, Wang L, Tang X. Optimized linearization of chord and twist angle profiles for fixed-pitch fixed-speed wind turbine blades. Renewable Energy. 2013 Sep 1; 57:111-9. DOI:

Nejadkhaki, H. K., & Hall, J. F. Modeling and Design Method for an Adaptive Wind Turbine Blade with Out-of-Plane Twist. Journal of Solar Energy Engineering, Transactions of the ASME, 140(5). 2018 Oct. DOI:

Greenshields, C. OpenFOAM The OpenFOAM Foundation User Guide., 2020.

Nu Rhahida Arini, Stephen Turnock, Mingyi Tan. Two-Dimensional Fluid–Structure Interaction Analysis Of A Vertical Axis Tidal Turbine Blade Using Periodic Inflow Equivalence Model. Journal of Engineering for the Maritime Environment. 2018, Vol. 232(1) 5–18. DOI:

Bouras, I., Ma, L., Ingham, D., & Pourkashanian, M. An Improved k –ω Turbulence Model for The Simulations of The Wind Turbine Wakes in a Neutral Atmospheric Boundary Layer Flow. Journal of Wind Engineering and Industrial Aerodynamics, 179, 358–368., 2018. DOI:

How to Cite
Arini, N. R., Gilang Muhammad, Joke Pratilastiarso, & Setyo Nugroho. (2022). Numerical Study of a Wind Turbine Blade Modification Using 30° Angle Winglet on Clark Y Foil . EMITTER International Journal of Engineering Technology, 10(2), 311-319.