The icing of wind turbine blades can result in decreased wind energy utilization coefficients and accelerated component fatigue. Based on this
this paper conducts a study on the aerodynamic characteristics of the NACA4415 airfoil using numerical simulation methods. Variation of lift and drag coefficient and the distribution of surrounding flow field after the wing profile icing under different incoming wind speeds are analyzed. As icing time increases
the lift coefficient gradually decreases and then stabilizes
while the drag coefficient increases with intermittent fluctuations. Furthermore
a simulation study on de-icing of the airfoil is conducted using the piezoelectric vibration method. Through harmonic response analysis
the influence of piezoelectric element thickness and spacing on de-icing effectiveness is evaluated
resulting in the optimal piezoelectric element thickness and spacing being determined as 0.5 mm and 3.0 mm
respectively. Thermal analysis is also performed to calculate the changes in temperature
elastic stress
and elastic strain. As icing time extends
the average temperature of the ice mass increases exponentially
leading to an approximately linear increase in the elastic stress and elastic strain of the ice coverage.
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