覆冰导线空气动力系数数值分析

采用ANSYS12中的FLUENT模块模拟覆冰导线周围的空气流场，计算不同分裂导线在全迎风攻角下的升力系数、阻力系数及扭矩系数。首先通过将湖北省中山口三分裂导线的数值计算结果与风洞实验数据进行对比，验证了计算模型的精确度，然后运用该计算模型对部分多分裂导线的气动力参数进行计算分析，得到覆冰厚度、覆冰形状以及来流风速对气动力系数的影响，同时计算分析了导线间距与直径比对尾流的影响，得到的空气动力参数可为导线舞动研究提供载荷支持。

Numerical Analysis on Aerodynamic Parameters of Iced Conductor

The air flow field around the iced conductor was simulated by means of FLUENT model of ANSYS12 software. The lift coefficient, drag coefficient and torque coefficient under different attack angles were calculated for different bundle conductors. Firstly, the numerical results of the tri-bundled conductors in Hubei Zhongshankou were compared with the wind tunnel test data to verify the accuracy of the calculation model, and then the aerodynamic parameters of part of bundled conductors were calculated and analyzed by this calculation model. The influences of ice thickness, ice shape and wind speed on the aerodynamic parameters were obtained. Meanwhile, the influences of ratio of the conductor spacer and diameter on wake were analyzed. The obtained aerodynamic parameters can provide load support for the research of conductor galloping.