Hydrodynamic characteristics of flow past a circular cylinder with four attached flexible plates in a high Reynolds number turbulent flow
| Autor: | Iman Zahed, Yasser Amini, Ehsan Izadpanah |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Journal of Vibration and Control. :107754632210910 |
| ISSN: | 1741-2986 1077-5463 |
| Popis: | In this study, the [Formula: see text] model is employed to evaluate the effects of flexible plates on the hydrodynamic forces acting on a circular cylinder in turbulent flows. In this regard, four flexible plates are attached to the circular cylinder. Besides, the finite volume method and finite element method have been utilized to discretize the governing equations of the fluid flow and the flexible plates, respectively. The Reynolds number based on the cylinder diameter is kept constant at [Formula: see text]. The effects of fin angle [Formula: see text] and the flexural rigidity [Formula: see text] on the wake structure, displacement amplitude, Strouhal number as well as lift and drag coefficients are investigated. The results showed that the flexural rigidity of plates had a significant influence on the hydrodynamic coefficients. Indeed, an increase in the non-dimensional flexural rigidity enhanced the drag coefficient, and then it approximately remained constant. For [Formula: see text] the averaged drag coefficient is approximately constant and equal to 6.1. As the [Formula: see text] increases, the drag coefficient increases rapidly and reaches the value of 14.37 for [Formula: see text] In the second configuration [Formula: see text], values of the drag coefficient for low [Formula: see text] and high [Formula: see text] values of flexural rigidity are equal to 7.81 and 8.79, respectively. |
| Databáze: | OpenAIRE |
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