TY - JOUR
TI - Numerical simulation of icing effect on aerodynamic characteristics of a wind turbine blade
AU - Li Yan
AU - Shi Lei
AU - Guo Wen-Feng
AU - Tagawa Kotaro
AU - Zhao Bin
JN - Thermal Science
PY - 2021
VL - 25
IS - 6
SP - 4643
EP - 4650
PT - Article
AB - Icing accretion on wind turbine will degrade its performance, resulting in  reduction of output power and even leading to accidents. For solving this  problem, it is necessary to predict the icing type and shape on wind turbine  blade, and evaluate the variation of aerodynamic characteristics. In this  paper the icing types and shapes in presence of airfoil, selected from blade  of 1.5 MW horizontal-axis wind turbine, are simulated under different  ambient temperatures and icing time lengths. Based on the icing simulation  results, the aerodynamic characteristics of icing airfoils are simulated,  including lift and drag coefficient, lift-drag ratio, etc. The simulation  results show that the glaze ice with two horns presents on airfoil under  high ambient temperature such as -5°C. When ambient temperatures are low,  such as -10°C and -15°C, the rime ices with streamline profiles present on  the airfoil. With increase in icing time the lift forces and coefficients  decrease, and the drag ones increase. According to the variations of  lift-drag ratios of icing airfoil, the aerodynamic performance of airfoil  deteriorates in the presence of icing. The glaze ice has great effect on  aerodynamic characteristics of airfoil. The research findings lay  theoretical foundation for icing wind tunnel experiment.