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CFD Analysis of Effects of Surface Fouling on Wind Turbine Airfoil Profiles

Received: 24 March 2015     Accepted: 11 June 2015     Published: 2 September 2015
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Abstract

One of the important factors that determine the long term efficiency of wind turbine blades is the extent to which the surface finish has been altered from the original state. This can happen either through corrosion or through impingement of particles. This paper aims at analyzing the effect of the later phenomenon on two specific profiles: the NREL S814 and NREL S826 profiles, at different Reynold’s numbers. These are two very similar profiles in utility and shape but differ in their thickness. This fact is used to ascertain the effect that thickness of an airfoil has on preventing surface fouling based performance degradation. Surface fouling has been modeled as a roughness at the leading edge of the profile. This is assumed to cause enough flow transition so as to simulate roughness over the entire profile. CFD simulations have been used to perform the analysis and initial results have been validated with experimental data. The accuracy of turbulence models in predicting normal and surface fouled conditions has been assessed. The performance parameters that have been considered are the lift, drag, moment coefficients and the drag to lift ratio.

Published in International Journal of Energy and Power Engineering (Volume 4, Issue 5-1)

This article belongs to the Special Issue Energy Systems and Developments

DOI 10.11648/j.ijepe.s.2015040501.11
Page(s) 1-11
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2015. Published by Science Publishing Group

Keywords

Surface Fouling, Wind Turbine Blades, S814 Airfoil, S826 Airfoil

References
[1] Dalili.A, Edrisy.A, Carriveau.R, 2009 “A review of surface engineering issues critical to wind turbine performance”, Renewable and Sustainable Energy Reviews 13, pp. 428–438
[2] Ferrer.E ,Munduate.X, 2009, ”CFD predictions of transition and distributed roughness over a wind turbine airfoil”, 47th AIAA Aerospace Sciences Meeting Including The New Horizons Forum and Aerospace Exposition.
[3] Kerho.M.F, Bragg.M.B, 1997, “Airfoil Boundary-Layer Development and Transition with Large Leading-Edge Roughness”, AIAA Journal, vol. 35.
[4] Janiszewska.J, Ramsay.R, Hoffmann.M.J, Gregorek.G.M, 1996, “Effects of Grit Roughness and Pitch Oscillations on the S814 Airfoil”, Airfoil Performance Report, Revised (12/99), National Renewable Energy Laboratory, USA.
[5] van Rooij.R. P. J. O. M, Timmer. W. A, 2003, “Roughness Sensitivity Considerations for Thick Rotor Blade Airfoils” ASME Journal of Solar Energy Engineering, vol.125.
[6] Menter.FR, Langtry.RB, Likki.SR, 2006, “A Correlation-Based Transition Model Using Local Variables— Part I: Model Formulation”, Journal of Turbomachinery, vol.128.
[7] Tangler J.L and Somers D.M., 1995, NREL airfoil families for hawts. Technical report, NREL.
[8] Corten G.P., 1999, “Insects cause double stall”, Symposium on aerodynamics of wind turbines, Stockholm, pp.6-74.
[9] Burton. T, Sharpe. D, Jenkins. N, Bossanyi. E, 2001, “ Wind Energy Handbook”, John Wiley and Sons, ISBN 0-471-48997-2.
[10] Ren. N, Ou. J, 2009, “Dust effect on the performance of wind turbine airfoils”, Journal of Electromagnetic Analysis & Applications, vol.1, pp 102-107
Cite This Article
  • APA Style

    Sashank Srinivasan, Vikranth Kumar Surasani. (2015). CFD Analysis of Effects of Surface Fouling on Wind Turbine Airfoil Profiles. International Journal of Energy and Power Engineering, 4(5-1), 1-11. https://doi.org/10.11648/j.ijepe.s.2015040501.11

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    ACS Style

    Sashank Srinivasan; Vikranth Kumar Surasani. CFD Analysis of Effects of Surface Fouling on Wind Turbine Airfoil Profiles. Int. J. Energy Power Eng. 2015, 4(5-1), 1-11. doi: 10.11648/j.ijepe.s.2015040501.11

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    AMA Style

    Sashank Srinivasan, Vikranth Kumar Surasani. CFD Analysis of Effects of Surface Fouling on Wind Turbine Airfoil Profiles. Int J Energy Power Eng. 2015;4(5-1):1-11. doi: 10.11648/j.ijepe.s.2015040501.11

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  • @article{10.11648/j.ijepe.s.2015040501.11,
      author = {Sashank Srinivasan and Vikranth Kumar Surasani},
      title = {CFD Analysis of Effects of Surface Fouling on Wind Turbine Airfoil Profiles},
      journal = {International Journal of Energy and Power Engineering},
      volume = {4},
      number = {5-1},
      pages = {1-11},
      doi = {10.11648/j.ijepe.s.2015040501.11},
      url = {https://doi.org/10.11648/j.ijepe.s.2015040501.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijepe.s.2015040501.11},
      abstract = {One of the important factors that determine the long term efficiency of wind turbine blades is the extent to which the surface finish has been altered from the original state. This can happen either through corrosion or through impingement of particles. This paper aims at analyzing the effect of the later phenomenon on two specific profiles: the NREL S814 and NREL S826 profiles, at different Reynold’s numbers. These are two very similar profiles in utility and shape but differ in their thickness. This fact is used to ascertain the effect that thickness of an airfoil has on preventing surface fouling based performance degradation. Surface fouling has been modeled as a roughness at the leading edge of the profile. This is assumed to cause enough flow transition so as to simulate roughness over the entire profile. CFD simulations have been used to perform the analysis and initial results have been validated with experimental data. The accuracy of turbulence models in predicting normal and surface fouled conditions has been assessed. The performance parameters that have been considered are the lift, drag, moment coefficients and the drag to lift ratio.},
     year = {2015}
    }
    

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  • TY  - JOUR
    T1  - CFD Analysis of Effects of Surface Fouling on Wind Turbine Airfoil Profiles
    AU  - Sashank Srinivasan
    AU  - Vikranth Kumar Surasani
    Y1  - 2015/09/02
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    N1  - https://doi.org/10.11648/j.ijepe.s.2015040501.11
    DO  - 10.11648/j.ijepe.s.2015040501.11
    T2  - International Journal of Energy and Power Engineering
    JF  - International Journal of Energy and Power Engineering
    JO  - International Journal of Energy and Power Engineering
    SP  - 1
    EP  - 11
    PB  - Science Publishing Group
    SN  - 2326-960X
    UR  - https://doi.org/10.11648/j.ijepe.s.2015040501.11
    AB  - One of the important factors that determine the long term efficiency of wind turbine blades is the extent to which the surface finish has been altered from the original state. This can happen either through corrosion or through impingement of particles. This paper aims at analyzing the effect of the later phenomenon on two specific profiles: the NREL S814 and NREL S826 profiles, at different Reynold’s numbers. These are two very similar profiles in utility and shape but differ in their thickness. This fact is used to ascertain the effect that thickness of an airfoil has on preventing surface fouling based performance degradation. Surface fouling has been modeled as a roughness at the leading edge of the profile. This is assumed to cause enough flow transition so as to simulate roughness over the entire profile. CFD simulations have been used to perform the analysis and initial results have been validated with experimental data. The accuracy of turbulence models in predicting normal and surface fouled conditions has been assessed. The performance parameters that have been considered are the lift, drag, moment coefficients and the drag to lift ratio.
    VL  - 4
    IS  - 5-1
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Author Information
  • Department of Mechanical Engineering, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, India

  • Department of Chemical Engineering, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, India

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