Aerodynamic force coefficients of an ice-accreted bridge cable in low and moderately turbulent wind
| Autor: | Stanislav Pospisil, Piotr Górski, Arsenii Trush, Marcin Tatara |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Drag coefficient
010504 meteorology & atmospheric sciences Renewable Energy Sustainability and the Environment Turbulence Mechanical Engineering Reynolds number Mechanics 01 natural sciences 010305 fluids & plasmas Physics::Fluid Dynamics Lift (force) Aerodynamic force symbols.namesake 0103 physical sciences symbols Aerodynamic drag Astrophysics::Earth and Planetary Astrophysics Physics::Atmospheric and Oceanic Physics Geology Wind turbulence 0105 earth and related environmental sciences Civil and Structural Engineering Wind tunnel |
| Zdroj: | Journal of Wind Engineering and Industrial Aerodynamics. 205:104335 |
| ISSN: | 0167-6105 |
| DOI: | 10.1016/j.jweia.2020.104335 |
| Popis: | 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 2.5·104 and 1.36·105. 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. |
| Databáze: | OpenAIRE |
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