两种典型覆冰导线气动力特性及稳定性分析

Aerodynamic Force Characteristics and stabilities of Two Typical Iced Conductors

摘要:

通过节段模型高频天平测力风洞试验,计算了准椭圆形和扇形两种代表性覆冰导线的气动力系数均值、均方根值.基于准定常假设对试验模型的单自由度驰振可能性进行了分析.所得结果为研究类似截面形状覆冰导线的气动特性提供了参考,为进一步计算覆冰导线响应提供了基础数据.

Abstract:

This paper investigates mean and RMS(root mean square)aerodynamic force coefficients of quasioval and sector shape iced conductors by tests on their rigid section models using high frequency balance technique in wind tunnel.Then possibility of SDOF(singledegreeoffreedom)galloping is discussed based on the aerodynamic force coefficients.The results presented in this paper can be used as reference of similar analysis for general iced conductors and provide useful data for estimation of their wind induced response.