Numerical study of hydrodynamic mechanism of dynamic tidal power
| Autor: | Jinhai Zheng, Zi-xuan Tang, Jeroen Adema, Kees Hulsbergen, Peng Dai, Jisheng Zhang, Gijs van Banning |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Dike
Tidal range 010504 meteorology & atmospheric sciences 0208 environmental biotechnology lcsh:River lake and water-supply engineering (General) Ocean Engineering Astrophysics::Cosmology and Extragalactic Astrophysics 02 engineering and technology 01 natural sciences Physics::Geophysics Acceleration Hydraulic head Perpendicular Geomorphology Dynamic tidal power Physics::Atmospheric and Oceanic Physics 0105 earth and related environmental sciences Civil and Structural Engineering lcsh:TC401-506 geography geography.geographical_feature_category business.industry Linear function 020801 environmental engineering Astrophysics::Earth and Planetary Astrophysics business Tidal power Geology |
| Zdroj: | Water Science and Engineering, Vol 11, Iss 3, Pp 220-228 (2018) |
| ISSN: | 1674-2370 |
| Popis: | Dynamic tidal power is a new way of capturing tidal energy by building a water head using a dike perpendicular to the coast. This study explored the hydrodynamic mechanism of the water head across an intended dynamic tidal power dike system using the Delft3D-FLOW software module. The propagating wave was simulated in a rectangular domain with a horizontal sea bottom at a 30-m depth. A significant water head was created across the dike by blocking the water. The water head increased with increasing dike length and increasing undisturbed tidal current acceleration. The maximum water head for the dike with a length of 50 km, located 900 km from the western boundary, was 2.15 m, which exceeded the undisturbed tidal range. The time series of the water head behaved in a manner identical to the undisturbed tidal current acceleration. The distribution of the water head over the dike assumed an elliptical shape. A parasitic wave was generated at the attachment and scattered outward. The phase lag across the dike did not behave as a linear function of the detour distance. Keywords: Dynamic tidal power, Marine renewable energy, Added mass, Phase-shift, Coastal engineering, Delft3D |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|