| 风攻角对宽高比为5的矩形断面梁气动力特性的影响 |
| Influence of Wind Attacking Angle on Aerodynamic Characteristic of Rectangular Girder with Aspect Ratio 5 |
| 投稿时间：2013-06-19 |
| 中文关键词:矩形断面梁 气动力 风洞试验 测压 |
| 英文关键词:rectangular girder aerodynamic force wind tunnel test pressure measured |
| 基金项目:国家自然科学基金(51308359)；河北省自然科学基金(E2013210103)；河北省高等学校科学技术研究基金(QN20131169) |
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| 中文摘要: |
| 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，研究了矩形断面梁的气动力特性随风攻角的变化规律。研究结果表明：在0°~6°的风攻角范围内，风攻角对斯托罗哈数的影响很小；不同风攻角下的驰振力系数均大于0；与上表面中间位置的测点相比，上表面边缘位置测点的压力与升力和扭矩的相关性更强；上表面边缘位置测点的压力与升力和扭矩的相关性对风攻角的变化不敏感；随着风攻角的增大，上表面中间位置测点的压力与升力和扭矩的相关性显著增强。 |
| 英文摘要: |
| A pressure measured sectional model wind tunnel test of rectangular girder with aspect ratio 5 was performed. The changing rule of aerodynamic characteristic of rectangular girder versus wind attacking angle was studied. The study results show that when wind attacking angle is in range of 0°~6°, the change of wind attacking angle has little effect on Strouhal number. The galloping force coefficients under different wind attacking angles are greater than zero. Compared with point pressure in center of upper surface, point pressure in the edge of upper surface is more correlated with lift force and torque. With the increase of the wind attacking angle, the correlation of point pressure in edge of upper surface with lift force and torque changes little, while correlation of point pressure in center of upper surface with lift force and torque increases dramatically. |
| 杨群,刘小兵.风攻角对宽高比为5的矩形断面梁气动力特性的影响[J].石家庄铁道大学学报(自然科学版),2015,(1):6-11,39. |
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