中文摘要：

为研究风力机叶片翼型在旋转状态下的结冰分布规律,本文基于利用自然低温的结冰风洞试验系统,对NACA0018翼型和S809翼型进行了绕轴旋转叶片结冰风洞试验,建立了不规则冰形评价方法,对比分析了转速、结冰时间、翼型等参数对叶片翼型结冰分布的影响。试验结果表明：本试验系统具有较好的可重复性,可适用于旋转叶片翼型结冰特性研究;转速对叶片翼型结冰形式影响显著,而结冰时间对其影响不大,但会使结冰量增加;对称翼型与非对称翼型间结冰存在较明显区别,非对称翼型结冰会出现前缘结冰和尾缘结冰同时存在的情况。对于各结冰特征量,无因次结冰面积及无因次结冰驻点厚度随结冰时间增加呈线性增长,但其他特征量随时间变化较小;转速对各结冰特征量有显著影响;对于非对称翼型在一定工况下会出现两个结冰区域,需要增加额外的特征量来描述结冰特征。

英文摘要：

To research the icing distribution characteristics on the surface of wind turbine blade airfoils under the rota-ting conditions,icing wind tunnel tests were performed on blades around a shaft using NACA 0018 and S809 airfoils. The testing was based on a self-designed icing wind tunnel experimental system using natural low temperatures in a cold climate. Some typical factors describing icing distribution characteristics on blade airfoil surfaces and an evalua-tion method for the icing distribution on a blade airfoil were established. The effects of blade airfoil type, chord length,and rotational speed on the icing characteristics were compared. Results show that the system has high repeat-ability and can be used for icing experiments on the rotating blade airfoils of wind turbines. The rotation speed of the blade airfoil obviously affects ice formation. However,freezing time had little effect on ice formation but increased the amount of ice on the blade airfoil. Typical icing factors on the rotating blade show that the dimensionless icing area and the dimensionless thickness of stagnation increased linearly with the freezing time,while other factors did not change with increasing time. The rotational speed had a noticeable effect on all the typical blade icing factors,which led to the difference in icing characteristics on different parts of the blade on a horizontal wind turbine.