Investigation on the Unsteady Aerodynamic Force on a 3:2 Rectangular Section under Accelerating Airflow
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Détails bibliographiques
| Auteur(s): |
Xiuyu Chen
(Department of Bridge Engineering / State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, China)
Ledong Zhu (Department of Bridge Engineering / State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, China) Zhongxu Tan (Department of Bridge Engineering / State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, China) |
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| Médium: | papier de conférence | ||||
| Langue(s): | anglais | ||||
| Conférence: | IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022 | ||||
| Publié dans: | IABSE Congress Nanjing 2022 | ||||
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| Page(s): | 758-766 | ||||
| Nombre total de pages (du PDF): | 9 | ||||
| DOI: | 10.2749/nanjing.2022.0758 | ||||
| Abstrait: |
Unsteady characteristics of aerodynamic force and wind-induced pressure on a 3:2 rectangular section under accelerating airflow are investigated through wind tunnel experiments. Three aerodynamic coefficients, drag coefficient Cd(t), RMS of lift coefficient Clrms(t), Strouhal number of the rectangular section in the accelerating airflow with or without initial velocity are compared with those of the steady flow. Results show that in the cases of airflow accelerated from the static state, significant unsteady feature appears in all three aerodynamic coefficients, 𝐶𝐶𝑑𝑑(𝑡𝑡) and Clrms(t) decreases and St number increases in the early accelerating stage. For accelerating airflow with an initial velocity, the three aerodynamic characteristics fit well with steady flow values, indicating negligible impact on any of these variables. |
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| Mots-clé: |
essai en soufflerie
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| Copyright: | © 2022 International Association for Bridge and Structural Engineering (IABSE) | ||||
| License: | Cette oeuvre ne peut être utilisée sans la permission de l'auteur ou détenteur des droits. |
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