摘要
针对驰振发生时的特大厚度覆冰进行覆冰导线模型的风洞测试 .试验结果表明 ,两种特大厚度冰型的覆冰导线在 10～ 18m/s风速下的气动力曲线相似 ,双导线试验有尾流影响时的下风导线气动力幅度显著低于单导线的情形 ;试验冰型兼有扇形和新月形冰型的气动力负阻尼特点 。
The wind tunnel tests on the aerodynamic characteristics of heavily iced conductors are carried out when severe gallop happens. The results show that the aerodynamic characteristics of two models are similar when the wind speed reaches to 10～18?m/s, the range of galloping observations. The wake effects on the aerodynamic characteristics make the leeward conductor have lower wind load than that of the upwind conductor. The models of heavily iced conductors have the aerodynamic negative damping characteristics that are combined with the characteristics of both the fan like ice model and the crescent like ice model. It is possible to deal with usual galloping prevention based on the aerodynamic data from typical symmetric fan like ice model and crescent like ice model.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2001年第8期84-86,共3页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目 (19872 0 2 6 )
湖北省自然科学基金资助项目 (2 0 0 0J12 7)
