湖南大学学报（自然科学版）2016，Vol.43Issue(3)：32-40,9.
基于刚性节段模型风洞试验的输电导线阻力系数研究
Study on Drag Coefficients of Conductors Based on Wind Tunnel Tests of Rigid Sectional Model
摘要
Abstract
In order to investigate the static wind forces on the multi-bundled conductors,based on the wind tunnel force balance tests for rigid sectional models of single and multi-bundled conductors,drag co-efficients and the influence of Reynolds number effects and shielding effects were analyzed.The results il-lustrate that the drag coefficients obtained by the wind tunnel tests are much smaller than those specified in the Code.And because of the surface roughness of the conductors as well as the flow turbulence,the range of Reynolds numbers in the critical region was brought forward.Moreover,although the Reynolds num-bers are within the subcritical range,the drag coefficients are still very sensitive to the variance of the Reynolds numbers.For the multi-bundled conductors,the interference caused by the upstream lines re-duces the integrated drag coefficients.It is stated that the influences of the shielding effects should be con-sidered.Finally,an empirical formula involving the Reynolds number effects and shielding effects was pro-posed to calculate the drag coefficients of the bundled conductors,which provides references for calculating the static wind loads of conductors.关键词
多分裂输电导线/风洞试验/阻力系数/雷诺数效应/屏蔽效应/经验公式Key words
multi-bundled conductors/wind tunnel tests/drag coefficients/Reynolds number effects/shielding effects/empirical formula分类
建筑与水利引用本文复制引用
王述良,梁枢果,邹良浩,吴海洋..基于刚性节段模型风洞试验的输电导线阻力系数研究[J].湖南大学学报（自然科学版）,2016,43(3):32-40,9.基金项目
国家自然科学基金资助项目（51078296），National Natural Science Foundation of China （）
