摘要
在覆冰分裂导线舞动过程中,导线的扭转振动与横向振动耦合,产生非稳态运动。基于输电导线节段模型的耦合运动,推导输电导线的非稳态空气动力表达式,并对该表达式进行数值模拟,得到的非稳态空气动力参数用已有的风洞数据进行验证。非稳态空气动力参数模拟是对某些较难测试的风洞试验的一个有益的理论补充。
In the galloping process of iced bundle conductor, the coupling relationship of conductor＇ s torsional vibration and transverse vibration may cause unsteady motion. Based on the coupling movement of section model of transmission line, the expression of aerodynamic parameters of transmission line on unsteady state was derived, which was numerically simulated. The simulated results of aerodynamic parameters were verified by using the existing wind tunnel data. The simulation of unsteady state aerodynamic parameters can provide beneficial theory supplement for some difficult wind tunnel tests.
出处
《电力建设》
2014年第7期92-96,共5页
Electric Power Construction
基金
国家自然科学基金青年基金(510082888)
关键词
导线
非稳态
空气动力参数
模拟
conductor
unsteady state
aerodynamic parameters
simulation
