https://scholars.lib.ntu.edu.tw/handle/123456789/630039
標題: | Lifting Stokes' paradox by accelerating flow past a circular cylinder and extension of the analysis to the sphere | 作者: | Xu, Hai Long Lei, Jie Chao CHIEN-CHENG CHANG Wang, Chang Yi |
公開日期: | 1-三月-2023 | 卷: | 35 | 期: | 3 | 來源出版物: | Physics of Fluids | 摘要: | It is known that Stokes' paradox exhibits in various flow conditions, most notably, in flow past a two-dimensional (2D) circular cylinder. In this study, we provide an example through detailed analytical solution that Stokes' paradox can be lifted by accelerating flow past a stationary cylinder. The analysis is also extended to the case of the accelerating flow past a stationary sphere although in this case, there is no Stokes' paradox. The effects of the acceleration parameter on the flow streamlines, the pressure, and the vorticity distributions, as well as on the drag coefficient, are investigated. The drag comprises the potential component and vorticity component, which are further due to form drag and frictional drag receiving a separate investigation. However, the drag decomposition is also examined the viewpoint of the force decomposition: the total drag = the potential component + surface vorticity component + volume vorticity component. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/630039 | ISSN: | 10706631 | DOI: | 10.1063/5.0141560 |
顯示於: | 應用力學研究所 |
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