华中科技大学学报（自然科学版）2013，Vol.41Issue(8)：106-110,5.
变截面正八边形棱柱风载特性试验
Experimental investigation of wind load characteristics of regular octagon prisms with variable cross-section
摘要
Abstract
Wind load characteristics of variable cross-section regular octagon prisms were explored through wind tunnel experiments.The average pressure and aerodynamic loads on the prism were measured with Reynolds number from 3.0 × 106 to 8.9 × 106.The distribution of average pressure coefficient in the circumference and axial direction were concluded from the wind tunnel experimental resuits.Furthermore,the effects of Reynolds number and wind angle on Strouhal number were analyzed.The results show that the average pressure coefficient distribution changes greatly in the circumferential direction,and the average pressure axial distribution shows a non-uniform distribution when the slope angle of the prism side wall exceeds a certain value.Besides,the wind angle exerts great effects on the average pressure circumferential distribution,and the Strouhal number tends to be a stable value with the increase of Reynolds number in different wind angles.关键词
正八边形棱柱/风洞试验/风载特性/压力分布/Re数/St数Key words
regular octagon prism/ wind tunnel experiment/ wind load characteristics/ pressure distribution/ Reynolds number/ Strouhal number分类
交通工程引用本文复制引用
杨娜娜,李刚,姚熊亮,张忠宇..变截面正八边形棱柱风载特性试验[J].华中科技大学学报（自然科学版）,2013,41(8):106-110,5.基金项目
国家自然科学基金重点资助项目(50939002) （50939002）
海军武器装备预先研究资助项目 （）
船舶工业国防科技预研基金资助项目. （）
