文章基本信息

标题：Degradation of Power Generation Performance due to Effects of Various Ice Shapes and Accretions on Wind Turbine Blades
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作者：Aditya Bagade ; Changki Mo ; Abdelhamid Mazher 等
期刊名称：Energy Research Journal
印刷版ISSN：1949-0151
电子版ISSN：1949-016x
出版年度：2015
卷号：6
期号：2
页码：42-53
DOI：10.3844/erjsp.2015.42.53
出版社：Science Publications
摘要：In today’s world, green energy has become a key initiative asan alternative energy resource. Wind turbines are widely used to harvest windenergy in seasonal and cold environments. Although efficient, cold weatherconditions negatively affects wind turbine operations due to ice formation.Damage from icing is seen on blade-tips when super-cooled water droplets thatform in colder environments rapidly freeze and accumulate. Different forms ofice structures are formed along the leading edge to the trailing edge of theturbine blade and are classified into horn, rime and glaze ice. These variousice structures can cause power losses, mechanical and electrical failures andpose serious safety hazards (e.g., ice throwing). Ongoing efforts have been inplace to develop anti-icing and de-icing strategies, but only a few are available on the market. In this computationalstudy using ANSYS 14, a variable pitched National Renewable Energy Laboratory(NREL) and National Advisory Committee for Aeronautics (NACA) airfoils are usedto determine the effects of various ice formations along the cord ofturbine blade. Ice accretions on turbine blade can cause significantperformance issues such as decreased lift and increased drag leading to performanceand energy losses. Understanding the flow behavior of iced airfoil is criticalin determining what geometric features of ice contributes to the performancedegradation and aerodynamic failures in wind turbines. This study may helpoptimize future designs and implementation of ice mitigations systems tomaximize turbine power output.
关键词：Wind Turbine; Ice Accretions; Aerodynamic Performance; Computational Fluid Dynamics; Numerical Simulation