中央稳定板提高颤振稳定性能的细观作用机理

欧阳克俭1,2,陈政清2

振动与冲击 ›› 2016, Vol. 35 ›› Issue (1) : 11-16.

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (1) : 11-16.
论文

中央稳定板提高颤振稳定性能的细观作用机理

  • 欧阳克俭1,2,陈政清2
作者信息 +

Microcosmic mechanism of flutter stability improvement using Central stabilizer

  • Ouyang Ke-jian1,2, Chen Zheng-qing2
Author information +
文章历史 +

摘要

通过CFD数值模拟以及PIV风洞试验研究了中央稳定板对矮寨桁架梁悬索桥断面绕流的细观作用机理。CFD数值模拟表明中央稳定板促进了在桥面中央附近形成位于上下桥面的旋涡对,使之相当于升力的作用。有稳定板断面前端和尾部的旋涡体积增大,进而使桥梁断面在颤振中的竖向自由度参与作用增强。PIV流迹显示气流在中央稳定板的背风侧形成了漩涡,在模型尾部同样有旋涡的形成,进一步验证了CFD数值模拟的正确性。

Abstract

CFD numerical simulation and PIV wind tunnel tests to study micro-mechanism of central stabilizer for the flow around Aizhai truss suspension bridge section. CFD indicates that the central stabilizer promote the formation of vortex pair in the upper and lower deck near the center of the deck. and making it equivalent to lift force. Vortex volume of front and tail of Central stabilizer bridge section were increased, thereby enabling the vertical degrees of freedom involved in the enhanced role of the bridge deck section when flutter occurs. PIV flow trace display air flow on the leeward side of the central stabilizer board formed vortex, same vortex formation at the end of the bridge section, the accuracy of CFD numerical simulation were verified at a degree.

关键词

  / 颤振;气动措施;中央稳定版;PIV;CFD

Key words

flutter / aerodynamic measures / Central stabilizer / PIV / CFD

引用本文

导出引用
欧阳克俭1,2,陈政清2. 中央稳定板提高颤振稳定性能的细观作用机理[J]. 振动与冲击, 2016, 35(1): 11-16
Ouyang Ke-jian1,2, Chen Zheng-qing2 . Microcosmic mechanism of flutter stability improvement using Central stabilizer[J]. Journal of Vibration and Shock, 2016, 35(1): 11-16

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