原文传递
Numerical Evaluation of Optimal Sizes of Wells Turbine and Chamber of a Cluster of Oscillating Water Columns Integrated into a Breakwater on the Southern Brazilian Coast
| 题名： | Numerical Evaluation of Optimal Sizes of Wells Turbine and Chamber of a Cluster of Oscillating Water Columns Integrated into a Breakwater on the Southern Brazilian Coast |
| 正文语种： | eng |
| 作者： | Guilherme F. Wiener;Paulo R. F. Teixeira;Eric Didier |
| 作者单位： | Engineering School Universidade Federal do Rio Grande Av. Italia km 8 Campus Carreiros 96201-900 Rio Grande RS Brazil;Engineering School Universidade Federal do Rio Grande Av. Ltalia km 8 Campus Carreiros 96201-900 Rio Grande RS Brazil;Laboratorio Nacional de Engenharia Civil Hydraulics and Environment Dept. Av. Do Brasil 101 1700-066 Lisbon Portugal |
| 关键词： | Wave energy; Oscillating water column; RANS; Turbine size optimization; Generalized-TDO model. |
| 摘要： | This paper describes a numerical evaluation of optimal sizes of a Wells turbine and chamber cross section to be used in a cluster of an oscillating water column (OWC) wave energy converter device. The FLUENT numerical model, based on the Reynolds-averaged Navier-Stokes equations and the volume of fluid technique, is used for modeling hydrodynamic and aerodynamic flows. Two new methods are developed for diminishing the computational cost: the generalized-TDO (turbine diameter optimization) model and the HAS (hydro-aerodynamic similarity) model. The generalized-TDO model is developed to determine the optimal turbine diameter for an OWC chamber with a square cross section. The analytical HAS model employs a similitude method to extend results obtained for a square cross section of the OWC chamber to a rectangular one. The optimal length, B, and width, W, of the chambers and turbine diameter, D, chosen by taking into account the southem Brazilian wave climate, were B×W=15×15m~2 and D=2.75 to 3.00 m and 20×20 m~2 and D=3.25 to 3.50 m, with efficiencies of 51% and 49%, respectively. Same optimal annual efficiency can be obtained for rectangular cross-section chambers 15×W and 20×W by using an adequate turbine diameter defined by the HAS model. |
| 出版年： | 2022 |
| 期刊名称： | Journal of Waterway, Port, Coastal and Ocean Engineering |
| 卷： | 148 |
| 期： | 4 |
| 页码： | 04022009.1-04022009.15 |
检索历史
应用推荐
