EFFECT OF REDUCED FREQUENCY ON THE UNSTEADY AERODYNAMIC PERFORMANCE OF A WIND TURBINE BLADE SECTION

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SOLTANI M.R.; SEDDIGHI M.; BAKHSH ALIPOUR A.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: ESTEGHLAL Year:2007 | Volume:26 | Issue:1 Page(s): 247-268

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Information Journal Paper

Title

EFFECT OF REDUCED FREQUENCY ON THE UNSTEADY AERODYNAMIC PERFORMANCE OF A WIND TURBINE BLADE SECTION

Author(s)

SOLTANI M.R. | SEDDIGHI M. | BAKHSH ALIPOUR A. | Issue Writer Certificate

Keywords

REDUCED FREQUENCYQ3

WIND TURBINEQ1

UNSTEADY FLOWQ2

DYNAMIC STALLQ1

HYSTERESIS LOOPQ3

Abstract

The blades of WIND TURBINEs are the most important parts in producing power output. In this study, a section of a 660 KW WIND TURBINE blade will be installed in Iran in near future was tested in a wind tunnel. In addition to steady tests, various unsteady tests including the effects of REDUCED FREQUENCY mean angle of attack, and amplitudes were carried out. The preliminary results show strong effects of REDUCED FREQUENCY on the aerodynamic coefficients of the airfoil. Moreover, increasing the REDUCED FREQUENCY delays DYNAMIC STALL angle of attack but increases lift and drag coefficients compared to the static results. Further, the values of the aerodynamic coefficients in the upstroke motion (increasing angle of attack) are different form their corresponding values in the downstroke (decreasing angle of attack). These differences create a HYSTERESIS LOOP where its width and shape are strong functions of REDUCED FREQUENCY, mean angle of attack, and amplitudes.

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APA: Copy

SOLTANI, M.R., SEDDIGHI, M., & BAKHSH ALIPOUR, A.. (2007). EFFECT OF REDUCED FREQUENCY ON THE UNSTEADY AERODYNAMIC PERFORMANCE OF A WIND TURBINE BLADE SECTION. ESTEGHLAL, 26(1), 247-268. SID. https://sid.ir/paper/6012/en

Vancouver: Copy

SOLTANI M.R., SEDDIGHI M., BAKHSH ALIPOUR A.. EFFECT OF REDUCED FREQUENCY ON THE UNSTEADY AERODYNAMIC PERFORMANCE OF A WIND TURBINE BLADE SECTION. ESTEGHLAL[Internet]. 2007;26(1):247-268. Available from: https://sid.ir/paper/6012/en

IEEE: Copy

M.R. SOLTANI, M. SEDDIGHI, and A. BAKHSH ALIPOUR, “EFFECT OF REDUCED FREQUENCY ON THE UNSTEADY AERODYNAMIC PERFORMANCE OF A WIND TURBINE BLADE SECTION,” ESTEGHLAL, vol. 26, no. 1, pp. 247–268, 2007, [Online]. Available: https://sid.ir/paper/6012/en

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