四分裂新月形覆冰导线的气动绕流特性分析

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摘要对一种排列方式的四分裂新月形覆冰导线的气动特性进行了风洞实验测试和数值模拟计算，通过计算结果与实验结果的对比研究，确定了正确合理计算覆冰导线气动特性参数的方法。然后，对另一种工程实际中典型排列的四分裂新月形覆冰导线的气动特性进行了计算。最后，依据舞动机理对两种排列的四分裂覆冰导线的稳定性进行了讨论。结果表明：由于迎风前方导线对气流的屏蔽效应，使得尾流后方导线的气动特性受到影响，稳定性发生较大变化。其中排列方式、初始覆冰角度、覆冰厚度对屏蔽效果影响较大，而在工程中常用的间隔棒跨度的改变对屏蔽效果影响较小。

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	肖良成
	李新民
	江俊

关键词 ：四分裂覆冰导线, 气动力特性, 舞动稳定性

Abstract：In this paper,two kinds of quad-bundled iced-conductors of crescent-shape are tested and simulated in order to analyze their stabilities. The approximation curves of aerodynamic force coefficients are obtained by applying polynomial curve fitting on the results of fluid/structure coupled finite element method. Then stability of SDOF(single-degree-of-freedom) galloping is discussed based on the two existing aeroelastic stability criteria. The results presented in this paper can provide useful data for estimation of the wind induced response of the quad-bundled iced-conductors.

Key words： Quad-bundled iced-conductors aerodynamic characteristics stability of galloping

收稿日期: 2013-03-07 出版日期: 2015-01-22

PACS:

TB123

基金资助:国家自然科学基金资助项目（11172223、50908218）。

作者简介: 肖良成男，1988年生，硕士研究生，研究方向为流固耦合振动和含能材料爆轰研究。李新民男，1974年生，研究员，研究方向为覆冰导线振动。

引用本文:

肖良成，李新民，江俊. 四分裂新月形覆冰导线的气动绕流特性分析[J]. 电工技术学报, 2014, 29(12): 261-267. Xiao Liangcheng,Li Xinmin,Jiang Jun. Study on Aerodynamic Characteristics of Quad-Bundled Crescent-Shape Iced-Conductors. Transactions of China Electrotechnical Society, 2014, 29(12): 261-267.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2014/V29/I12/261

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