摘要
针对宽高比为5的矩形断面梁进行了节段模型测压风洞试验,研究了气动力的展向相关性随展向间距和来流风攻角的变化规律。研究结果表明:气动力的展向相关系数随展向间距的增大而逐渐减小;在同一展向间距下,升力的展向相关系数最大,扭矩的展向相关系数次之,阻力的展向相关系数最小。升力和扭矩的展向相关系数在0°风攻角时最大,且随着风攻角的增大而减小。
A pressure-measured sectional model wind tunnel test of a rectangular cylinder with aspect ratio 5was performed. The changing rule for the spanwise correlation of an aerodynamic force versus a spanwise distance and a wind attacking angle was studied. The study results show that the spanwise correlation coefficient of an aerodynamic force becomes smaller with a larger spanwise distance. Under the same spanwise distance, the spanwise correlation coefficient of a lift force is greatest, the spanwise correlation coefficient of a torque is smaller, and the spanwise correlation coefficient of a drag force is smallest. The spanwise correlation coefficient between a lift force and a torque attains the maximum value in a zero degree wind attacking angle, and it becomes smaller with a larger wind attacking angle.
出处
《工程力学》
EI
CSCD
北大核心
2015年第S1期50-54,共5页
Engineering Mechanics
基金
国家自然科学基金项目(51308359)
河北省自然科学基金项目(E2013210103)
河北省高等学校科学技术研究基金项目(QN20131169)
关键词
矩形断面
气动力
展向相关性
节段模型
风洞试验
rectangular cylinder
aerodynamic force
spanwise correlation
sectional model
wind tunnel test
