AEROELASTIC RESPONSE OF HORIZONTAL-AXIS WIND TURBINE IN SUDDEN WIND GUSTS BASED ON UNSTEADY BLADE ELEMENT-MOMENTUM METHOD

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EBRAHIMI ABBAS; SEKANDARI MAHMOOD

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Journal: Modares Mechanical Engineering Year:2016 | Volume:16 | Issue:8 Page(s): 177-187

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Information Journal Paper

Title

AEROELASTIC RESPONSE OF HORIZONTAL-AXIS WIND TURBINE IN SUDDEN WIND GUSTS BASED ON UNSTEADY BLADE ELEMENT-MOMENTUM METHOD

Author(s)

EBRAHIMI ABBAS | SEKANDARI MAHMOOD | Issue Writer Certificate

Keywords

BLADE ELEMENT MOMENTUM

UNSTEADY AERODYNAMICS

STALL DYNAMIC

AEROELASTICITY

WIND TURBINE

Abstract

Wind turbines are subject to various unsteady aerodynamic effects. This includes the wind gust and the change of wind direction. In this work, the aeroelastic behavior of a reference horizontal axis WIND TURBINE has been investigated under different wind gusts and yaw conditions. Unsteady BLADE ELEMENT MOMENTUM (UBEM) theory and Euler-Bernoulli beam assumption were used to rotor power estimations. To take into account the time delay in aerodynamic loads due to a sudden change in inflow conditions, a dynamic wake model was implemented. The ONERA dynamic stall model was coupled into the BEM theory to improve the aerodynamic loads prediction in the unsteady inflow and yaw conditions. To verify this method, the results in the case of steady-state are compared with the NREL 5 MW WIND TURBINE and in the unsteady case are compared with the Tjaereborg test turbine. The results indicate that sudden change in wind speed causes sharp fluctuations in terms of elastic torsion of the blade and other parameters such as rotor power. Increasing in wind gradient can leads to increasing time delay to a new equilibrium. The increase in yaw angle can be contributed to the rotor power and the periodic loads reduction. The method presented here may facilitate improvements in the controller design for WIND TURBINEs.

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APA: Copy

EBRAHIMI, ABBAS, & SEKANDARI, MAHMOOD. (2016). AEROELASTIC RESPONSE OF HORIZONTAL-AXIS WIND TURBINE IN SUDDEN WIND GUSTS BASED ON UNSTEADY BLADE ELEMENT-MOMENTUM METHOD. MODARES MECHANICAL ENGINEERING, 16(8), 177-187. SID. https://sid.ir/paper/687687/en

Vancouver: Copy

EBRAHIMI ABBAS, SEKANDARI MAHMOOD. AEROELASTIC RESPONSE OF HORIZONTAL-AXIS WIND TURBINE IN SUDDEN WIND GUSTS BASED ON UNSTEADY BLADE ELEMENT-MOMENTUM METHOD. MODARES MECHANICAL ENGINEERING[Internet]. 2016;16(8):177-187. Available from: https://sid.ir/paper/687687/en

IEEE: Copy

ABBAS EBRAHIMI, and MAHMOOD SEKANDARI, “AEROELASTIC RESPONSE OF HORIZONTAL-AXIS WIND TURBINE IN SUDDEN WIND GUSTS BASED ON UNSTEADY BLADE ELEMENT-MOMENTUM METHOD,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 8, pp. 177–187, 2016, [Online]. Available: https://sid.ir/paper/687687/en

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