摘要
通过风洞试验测试获得在不同风速和风攻角下四分裂导线的风压阻力系数,同时采用数值模拟方法计算得到与试验模型对应的导线阻力系数,试验和数值结果较吻合。进而利用数值方法对八分裂和六分裂导线的绕流问题进行模拟,得到不同风速和风攻角下分裂导线的阻力系数。与我国现行标准和IEC标准中导线风荷载计算方法进行比较,表明在计算多分裂导线的风压时,其阻力系数按国内现行标准取值可能偏大而过于保守,有必要进一步通过理论和风洞试验研究后进行调整。
Drag coefficients of quad-bundled conductor under different wind speeds and attack angles are firstly determined by means of wind tunnel test. Meanwhile, the drag coefficients are obtained by numerical simulation method and the results are consistent with those by the wind tunnel test. Furthermore, cross flows around six-bundled and eight-bundled conductors are numerically investigated, and the drag coefficients are then determined. Compared with the determination method of wind load on conductor in current Chinese code and the IEC code for the design of transmission line, the drag coefficients defined in the Chinese code may be too large for bundled conductors, and may need to be adjusted based on further theoretical and wind tunnel test investigation.
出处
《重庆大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2013年第1期110-114,120,共6页
Journal of Chongqing University
基金
国家自然科学基金资助项目(51277186)
重庆市自然科学基金资助项目(CSTC2009BB7367)
中央高校基本科研业务费资助项目(CDJXS11240009)
关键词
分裂导线
风压阻力系数
风洞试验
数值模拟
bundled conduetor
wind pressure drag coefficient
wind tunnel test
numerical simulation