Aerodynamic force coefficients of an ice-accreted bridge cable in low and moderately turbulent wind

0531972 - ÚTAM 2021 RIV NL eng J - Článek v odborném periodiku
Górski, P. - Tatara, M. - Pospíšil, Stanislav - Trush, Arsenii
Aerodynamic force coefficients of an ice-accreted bridge cable in low and moderately turbulent wind.
Journal of Wind Engineering and Industrial Aerodynamics. Roč. 205, October (2020), č. článku 104335. ISSN 0167-6105. E-ISSN 1872-8197
Grant CEP: GA ČR(CZ) GA19-04695S
Institucionální podpora: RVO:68378297
Klíčová slova: bridge cable * ice accretion * angle of attack * aerodynamic coefficients
Obor OECD: Civil engineering
Impakt faktor: 4.082, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.1016/j.jweia.2020.104335

This study deals with the effects of wind turbulence on the mean aerodynamic drag, lift and moment coefficients of a stationary ice-accreted section model of a bridge cable for different wind angles of attack. The experiments were conducted in the Reynolds number range between 2,5⋅10E4 and 1,36⋅10E5. While the yawed/inclined cable model was experimentally iced in a climatic wind tunnel, the development of the ice shape was registered using photogrammetry. Later on, the ice-accreted model was reproduced on a smaller scale via three-dimensional printing. For the model in cross-flow, a series of wind tunnel tests were performed in low and moderately turbulent flow conditions with turbulence intensities of 3% and 12%, respectively. The obtained results were compared with those obtained experimentally for a circular smooth cylinder. The principal finding is that the flow turbulence significantly reduces the drag coefficient.
Trvalý link: http://hdl.handle.net/11104/0310591