Wind Tunnel Study of the Effect Zigzag Tape on Aerodynamics Performance of A Wind Turbine Airfoil

Journal of Advanced Research in Fluid Mechanics and Thermal Sciences
Volume 41 No. 1, January 2018, Pages 1-9

Seyed Reza Jafari Gahraz1, Tholudin Mat Lazim1,*, Masoud Darbandi2
1Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
2Department of Aerospace Engineering, Centre of Excellence in Aerospace Systems, Sharif University of Technology, Tehran, P.O. Box 11365-8639, Iran
*Corresponding author: tholudin@utm.my

KEYWORDS

Wind turbine, airfoil, zigzag tape, wind tunnel

ABSTRACT

A wind tunnel study was performed on the FFA-W-3-270 airfoil, which form a segment of a 1.25 MW wind turbine blade, to examine the effect of fixed roughness height and position using a zigzag tape boundary layer trip strip. Tests were conducted at a Reynolds number of 1×106 over a wide range of angles of attack. The zigzag tape, as an artificial roughness device, not only triggers a premature transition in the flow whereby laminar flow regimes change to turbulent, but also increases the momentum thickness of the turbulent boundary layer and change the airfoil camber. The 60° zigzag tape of 0.5 mm and 1 mm height was placed on the suction side of the airfoil at different chord wise locations. The result indicated that the thicker and the closer the tape to the leading edge had more influence on the boundary layer. Due to a drop in the flow velocity at the tape, the static pressure increased. Consequently, the tripped airfoil developed a lower pressure on the suction side in comparison to the clean airfoil. The maximum lift coefficient decreased by up to 31.5% for the 1 mm tape height located at 5% of the chord and the stall occurs at a lower angle of attack.

CITE THIS ARTICLE

MLA
Gahraz, Seyed Reza Jafari, et al. “Wind Tunnel Study of the Effect Zigzag Tape on Aerodynamics Performance of A Wind Turbine Airfoil.” Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 41.1 (2018): 1-9.

APA
Gahraz, S. R. J., Mat Lazim, T., & Darbandi, M. (2018). Wind Tunnel Study of the Effect Zigzag Tape on Aerodynamics Performance of A Wind Turbine Airfoil. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 41(1), 1-9.

Chicago
Gahraz, Seyed Reza Jafari, Tholudin Mat Lazim, and Masoud Darbandi. “Wind Tunnel Study of the Effect Zigzag Tape on Aerodynamics Performance of A Wind Turbine Airfoil.” Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 41, no. 1 (2018): 1-9.

Harvard
Gahraz, S.R.J., Mat Lazim, T. and Darbandi, M., 2018. Wind Tunnel Study of the Effect Zigzag Tape on Aerodynamics Performance of A Wind Turbine Airfoil. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 41(1), pp.1-9.

Vancouver
Gahraz, SRJ, Mat Lazim, T, Darbandi, M. Wind Tunnel Study of the Effect Zigzag Tape on Aerodynamics Performance of A Wind Turbine Airfoil. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences. 2018;41(1):1-9.

REFERENCES

[1] Braslow, Albert L., and Eugene C. Knox. “Simplified method for determination of critical height of distributed roughness particles for boundary-layer transition at Mach numbers from 0 to 5.” (1958).
[2] Selig, Michael S., ed. Summary of low speed airfoil data. Vol. 1. SoarTech, 1995.
[3] Lyon, Christopher A., Michael S. Selig, and Andy P. Broeren. “Boundary layer trips on airfoils at low Reynolds numbers.” AIAA paper 511 (1997): 35.
[4] Timmer, W. A., and R. P. J. O. M. Van Rooij. “Summary of the Delft University wind turbine dedicated airfoils.” TRANSACTIONS-AMERICAN SOCIETY OF MECHANICAL ENGINEERS JOURNAL OF SOLAR ENERGY ENGINEERING 125, no. 4 (2003): 488-496.
[5] Van Rooij, R. P. J. O. M., and W. A. Timmer. “Roughness sensitivity considerations for thick rotor blade airfoils.” Transactions-American Society of Mechanical Engineers Journal of Solar Energy Engineering 125, no. 4 (2003): 468-478.
[6] Elsinga, G. E., and J. Westerweel. “Tomographic-PIV measurement of the flow around a zigzag boundary layer trip.” Experiments in fluids 52, no. 4 (2012): 865-876.
[7] Schaffarczyk, A. P., H. Winkler, K. Freudenreich, K. Kaiser, R. Rebstock, and German-Dutch-Wind-Tunnel DNW. “Reynolds number effects on thick aerodynamic profiles for wind turbines.” In European Wind Energy Conference and Exhibition. 2003.
[8] Zhang, Ye, Alexander van Zuijlen, and Gerard van Bussel. “The MEXICO rotor aerodynamic loads prediction: ZigZag tape effects and laminar-turbulent transition modeling in CFD.” Journal of Wind Engineering and Industrial Aerodynamics 168 (2017): 152-163.
[9] Fuglsang, Peter, Ioannis Antoniou, Kristian S. Dahl, and Helge Aagaard Madsen. Wind tunnel tests of the FFA-W3-241, FFA-W3-301 and NACA 63-430 airfoils. 1998.
[10] Gomez-Iradi, Sugoi, and Xabier Munduate. “Zig-zag tape influence in NREL Phase VI wind turbine.” In Journal of Physics: Conference Series, vol. 524, no. 1, p. 012096. IOP Publishing, 2014.
[11] Soltani, Mohammad Reza, Amir Hossein Birjandi, and M. Seddighi Moorani. “Effect of surface contamination on the performance of a section of a wind turbine blade.” Scientia Iranica 18, no. 3 (2011): 349-357.
[12] Hansen, A. C., and C. P. Butterfield. “Aerodynamics of horizontal-axis wind turbines.” Annual Review of Fluid Mechanics 25, no. 1 (1993): 115-149.
[13] Anders Björck. “AERFORCE: Coordinates and calculations for FFA-W1-XXX, FFA-W2-XXX and FFA-W3-XXX series of airfoils for Horizontal Axis Wind Turbine.” FFA TN 1990-15 (1990).
[14] Björck, A. A guide to data Files from wind tunnel test of a FFA-W3-211 airfoil at FFA. Technical Report FFA PV019, FFA, Bromma, Sweden, 1996.
[15] Nadhirah Mohd Zain, Shabudin Mat, Khushairi Amri Kasim, Shuhaimi Mansor, Md. Nizam Dahalan, Norazila Othman. Wind Tunnel Experiments on a Generic Sharp-Edge Delta Wing UAV Model, Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 40, no. 1 (2017): 18-26.