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Results
Geometry Optimization of an Overtopping Wave Energy Device Implemented Into the New Breakwater of the Hanstholm Port Expansion
Margheritini, Lucia (Department of Civil Engineering, Aalborg University) | Stratigaki, Vasiliki (Department of Civil Engineering, Ghent University) | Troch, Peter (Department of Civil Engineering, Ghent University)
ABSTRACT The study presented here describes the geometry optimization of the Sea wave Slot cone Generator (SSG) overtopping wave energy converter as part of the feasibility study for the implementation of the device in the development plan of Hanstholm harbour in Denmark. The total length of the new planned breakwater is 1.5 km and the water depth ranges approximately from 8.0 m up to 14 m with localized influences on the wave climate. The study is conducted numerically in order to present the expected power production and overall performance of the SSG breakwater in Hanstholm. The price par kWh is also presented. INTRODUCTION Hanstholm Harbour was first established in 1967 in a location (Fig. 1) considered quite challenging to construct a harbour due to the large wave forces. Hanstholm used to be a small town with only few houses, while the population increased concurrently with the new activities iniciated after the establishment of the harbour. The existing harbour has three primary industries: ferry service, cargo transportation and fishing industries. These three industries with about 2300 employees, provide work for a large amount of the population of Hanstholm. Fishing is the main industry of the harbour and around 80% of the fish here is then directed to the European markets. Hanstholm harbour today consists of two outer breakwaters and two cross going breakwaters, which purpose is to reduce the wave height in the inner harbour (Fig. 1). The outer breakwaters have a height of 2.2 m above the mean water level (MWL). The inner harbour consists of 8 basins and has a size of approximately 2.7 km and water depth varies between 3.9 m and 9.0 m. In Autumn 2008, Hanstholm Harbour initiated the preparation of a development plan involving a major expansion. While intending to maintain the status of Denmark's largest fishing port, a great amount of innovation will be also introduced.
Estimation of Wave Conditions Along a New Breakwater For the Hanstholm Harbour Using the Numerical Model MILDwave
Stratigaki, Vasiliki (Department of Civil Engineering, Ghent University) | Troch, Peter (Department of Civil Engineering, Ghent University) | Margheritini, Lucia (Department of Civil Engineering, Wave Energy Research Group, Aalborg University) | Kofoed, Jens Peter (Department of Civil Engineering, Wave Energy Research Group, Aalborg University)
ABSTRACT Extension of the Hanstholm harbour (Denmark) is being planned, including the construction of a new breakwater. Within the general frame of the development plan of the harbour, numerical modelling has been carried out using the mild-slope model MILDwave developed at Ghent University, for estimating the wave conditions along the planned breakwater, close to the Danish Wave Energy Centre (DanWEC). Numerical results of the wave climate in the study area are presented here, including validation of the performance of the wave breaking module implemented in MILDwave, showing very good agreement with analytical (Goda" method) and numerical results (SWAN-1D). INTRODUCTION The harbour of Hanstholm (Fig. 1.a), which is situated in the northern part of Denmark, concentrates activities related to handling of goods, transport of passengers and fishing. To the North is Vigsø Bay, a part of Skagerrak, while to the West is the North Sea. The future vision of the harbour refers to it as centre of fishing activities in the entire Europe, as transit centre for goods and traffic and service centre for shipping between Europe, Scandinavia and The Gulf of Bothni, as ferry connection centre to The Faroes, Iceland, Norway and Scotland and as centre for wave energy. Extension of the harbour is being planned, including the construction of a new breakwater (Fig. 1.b). Within the general frame of the development plan of the harbour, numerical modelling has been carried out using the mild-slope model MILDwave for estimating the wave conditions along the new planned breakwater. THE MILD-SLOPE WAVE PROPAGATION MODEL MILDwave The numerical model MILDwave (Stratigaki and Troch, 2012a) is a mild-slope wave propagation model based on the equations of Radder and Dingemans (1985) and developed by Troch (1998). The phaseresolving model MILDwave is able to generate linear water waves over a mildly varying bathymetry and to calculate instantaneous surface elevations throughout the domain.
- Europe > United Kingdom > Scotland (0.24)
- Europe > United Kingdom > North Sea (0.24)
- Europe > Norway > North Sea (0.24)
- (2 more...)