Effect of Wind Turbine Blade Profile Symmetry on Ice Accretion

Abstract:

A multiphase numerical study has been carried out to understand the effects of wind turbine blade profile (airfoil) symmetry on resultant ice accretion. Two symmetric (NACA 0006 & 0012) and two non-symmetric airfoils (NACA 23012 & N-22) were used for this preliminary study. Based upon the airflow field calculations and super cooled water droplets collision efficiency, the rate and shape of accreted ice was simulated for rime ice conditions. Analysis showed higher air velocity along top surface of the non-symmetric airfoils as compared to symmetrical airfoils that also effects the droplet behavior and resultant ice growth. Results show that change in blade profile symmetry effects the resultant ice accretion. For symmetric airfoils, more streamlines ice shapes were observed along leading edge as compared to non- symmetric airfoils.

• Periodical: Applied Mechanics and Materials (Volume 863)
• Pages: 229-234
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.863.229
• Online since: February 2017
• Authors: Muhammad S. Virk*
• Keywords: Airfoil, Atmospheric Ice, Camber, CFD, Wind Turbine

References

[1] H. S. Kim, M. B. Bragg. Effects of leading edge ice accretion geometry on airfoil perforamance, Am. Inst. Aeronaut. Astronaut. (1999), pp.379-391.

DOI: 10.2514/6.1999-3150

[2] L. A. Coleman, Numerical simulation of flow over iced airfoil, in Faculty of school of Engineering, Airforce institute of technology, Air University, (1988), p.145.

[3] A. P. Broeren, et al. Aerodynamic simulation of runback ice accretion. J. Aircr. 47(3) (2010) 924-939.

DOI: 10.2514/1.46475

[4] P. J. Ansell, M. Bragg. Charactrization of low frequency oscillation in the flowfield about an iced airfoil. AIAA, 53(3) (2014) 629-637.

DOI: 10.2514/1.j053206

[5] G. P. Sohrab et al., Experimental study of ice accretion effects on aerodynamic performance of NACA 23012 airfoil. Chinese J. Aeronaut. 29(3) (2016) 585-595.

DOI: 10.1016/j.cja.2016.03.002

[6] D. Peter, Numerical simulation of ice accretion on wind turbines. in IWAIS 2009. (2009).

[7] S. V. Muhammad, C. H. Matthew, P. J. Nicklasson. Atmospheric icing on large wind turbine blades. Int. J. Energ. Envir. 3(1) (2012) 8.

[8] K. Mortensen, CFD simulations of an airfoil with leading edge ice accretion, in Department of mechanical engineering. Technical Univeersity of Denmanrk, DTU: Denmark, (2008), p.117.

[9] http: /www. pilotfriend. com/training/flight_training/aero/rot_foil. htm.

[10] http: /www. newmerical. com/index. php/products/fensap-ice-cfd-software.

[11] R. Clift, J. R. Grace, M. E. Weber, Bubbles, Drops and Particles. New York: Academic Press, (1978).

[12] Manual, N.S.U. 2010, NTI.

[13] S. V. Muhammad, U. N. Mughal. Numerical study of atmospheric ice accretion on rotating geometric cross sections with fins. J. Comput. Multiph. Flow. 8(1) (2016) 12.