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논문 기본 정보

자료유형
학술저널
저자정보
Lin, Siyuan (Research Centre for Wind Engineering, Southwest Jiaotong University) Li, Mingshui (Research Centre for Wind Engineering, Southwest Jiaotong University) Liao, Haili (Research Centre for Wind Engineering, Southwest Jiaotong University)
저널정보
테크노프레스 Wind & structures Wind & structures 제25권 제5호
발행연도
2017.1
수록면
475 - 492 (18page)

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초록· 키워드

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Inclined and yawed circular cylinder is an essential element in the widespread range of structures. As one of the applications, cables on bridges were reported to have the possibility of suffering a kind of large amplitude vibration called dry galloping. In order to have a detailed understanding of the aerodynamics related to dry galloping, this study carried out a set of wind tunnel tests for the inclined and yawed circular cylinders. The aerodynamic coefficients of circular cylinders with three surface configurations, including smooth, dimpled pattern and helical fillet are tested using the force balance under a wide range of inclination and yaw angles in the wind tunnel. The Reynolds number ranges from $2{\times}10^5$ to $7{\times}10^5$ during the test. The influence of turbulence intensity on the drag and lift coefficients is corrected. The effects of inclination angle yaw angle and surface configurations on the aerodynamic coefficients are discussed. Adopting the existed the quasi-steady model, the nondimensional aerodynamic damping parameters for the cylinders with three kinds of surface configurations are evaluated. It is found that surface with helical fillet or dimpled pattern have the potential to suppress the dry galloping, while the latter one is more effective.

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