湍流度对覆冰八分裂导线舞动的影响分析  

Effects of turbulence on galloping iced 8-bundled conductor

作　　者：徐倩 蔡萌琦 周林抒 严波[4] 王清远 XU Qian;CAI Mengqi;ZHOU Linshu;YAN Bo;WANG Qingyuan(School of Civil Engineering,Architecture and Environment,Xihua University,Chengdu 610039,China;School of Architecture and Civil Engineering,Chengdu University,Chengdu 610106,China;Sichuan Electric Po＇wer Test ＆ Research Inst.,Chengdu 610016,China;School of Aeronautics and Astronautics,Chongqing University,Chongqing 400044,China;School of Architecture and Environment,Sichuan University,Chengdu 610065,China)

机构地区：[1]西华大学土木建筑与环境学院,四川成都610039 [2]成都大学建筑与土木工程学院,四川成都610106 [3]四川省电力工业调整试验昕,四川成都610016 [4]重庆大学航空航天学院,重庆100044 [5]四川大学建筑与环境学院,四川成都610065

出　　处：《空气动力学学报》2018年第6期949-957,共9页Acta Aerodynamica Sinica

基　　金：国家自然科学基金青年项目(51507106)

摘　　要：受地面粗糙度的影响,越靠近地面,湍流度越高。采用风洞试验可发现不同湍流度下覆冰八分裂导线的空气动力系数存在较大的差异,且由气动系数确定的Den Hartog系数和Nigol系数也不相同。基于试验结果,利用有限元软件分析了不同湍流度下覆冰八分裂导线的舞动现象。结果表明,湍流风作用下,导线舞动现象更为明显,且增大了起舞风攻角范围。最后,讨论了不同参数对分裂导线舞动的作用,获得了风速、风攻角及线路档距对湍流风作用下导线舞动的影响规律,对覆冰八分裂导线舞动特性及防舞的后续研究有一定的参考意义。Due to the influence of the land roughness, the lower the wind load, the higher turbulence intensity of wind. According to wind tunnel tests, it can be found that the aerodynan, ic coefficients of iced 8 bundled conductor are significantly different under different turbulence conditions, and the Den Hartog and Nigol coefficients determined by aerodynamic coefficients are also different. Based on the test results, the numerical analysis of the galloping of iced 8-bundled conductor is analyzed, and the response of galloping to the change of turbulence is investigated. The mathematical simulation results of galloping traces show that the galloping amplitudes of the iced conductors and the range of initial attack angle increase obviously under turbulence conditions. Moreover, the effects of different parameters on the galloping of iced 8 bundled conductors are researched. The parameters such as wind velocity, attack angle, and span length on the galloping of the 8-bundled conductors under turbulence wind loads are obtained by numerical method, which offers a theoretical basis for the study of the technique of anti-galloping.

关 键 词：覆冰八分裂导线 舞动 风洞试验 数值模拟 湍流度 参数分析 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程] TM751[电气工程—电力系统及自动化]