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Vorticity-Stream Function Formulation for Turbulent Oscillatory Boundary Layer over the Sea Bottom
| 题名： | Vorticity-Stream Function Formulation for Turbulent Oscillatory Boundary Layer over the Sea Bottom |
| 正文语种： | eng |
| 作者： | Giovanna Vittori;Pilar Diaz-Carrasco;Paolo Blondeaux |
| 作者单位： | Dept. of Civil Chemical and Environmental Engineering Univ. of Genoa Via Montallegro 1 16145 Genova Italy;Dept. of Mechanical Engineering Univ. of Sherbrooke 2500 boulevard de l'Universite Sherbrooke QB Canada J1K 2R1;Dept. of Civil Chemical and Environmental Engineering Univ. of Genoa Via Montallegro 1 16145 Genova Italy |
| 摘要： | The oscillatory flow within the oscillatory boundary layer at the bottom of propagating surface waves is determined by numerically solving the vorticity-stream function problem when the flow regime is turbulent. Two alternative vorticity equations are considered. The first equation is "exact" and is obtained by applying the curl operator to the Reynolds equation. The second equation is obtained by assuming that a turbulent eddy diffusivity is linearly related to the turbulent eddy viscosity and can be used to model the vorticity dynamics close to the bottom. Even though the second equation requires less computational resources and has been employed previously, it provides inaccurate results, and the use of the full equation is recommended. |
| 出版年： | 2022 |
| 期刊名称： | Journal of Waterway, Port, Coastal and Ocean Engineering |
| 卷： | 148 |
| 期： | 1 |
| 页码： | 04021047.1-04021047.7 |
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