Experimental Investigation of an Inclined, Floating Breakwater : a case study with porous design and bio enhancing features
The use of a simple, inexpensive, and effective type of floating breakwater is increasingly becoming a necessity in shoreline and marine structure protection. This study concerns the hydrodynamic behavior of a new type of free surface inclined porous floating breakwater is for the purpose of wave at...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/422906 |
| Acceso en línea: | https://hdl.handle.net/2117/422906 |
| Access Level: | acceso abierto |
| Palabra clave: | waves Coastal engineering Floating breakwater Waves Transmission coefficient Coastal Environment Porous Ones Enginyeria de costes Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia |
| Sumario: | The use of a simple, inexpensive, and effective type of floating breakwater is increasingly becoming a necessity in shoreline and marine structure protection. This study concerns the hydrodynamic behavior of a new type of free surface inclined porous floating breakwater is for the purpose of wave attenuating in regular and irregular waves, allow the sediment to pass through and to increase the aeration near onshore. The surface will be porous and partially permeable with the purpose of disturbing the flow over the volume as well as creating an aerated turbulence in, and around, the structure. The inclined structure supported by two ballast floating box which uses several configurations of rocks and double cubes units for wave attenuation mechanisms. A series of experiments were carried out on the new floating breakwater model with six different types of porous configuration with different porosity and surface roughness to compare their performances The hydrodynamic effectiveness which is presented as a function of the wave transmission coefficient, reflection coefficient is investigated experimentally. The potential to implement bio enhancing features will be discussed and tested to investigate whether the breakwater can act as an artificial floating reef. The action of 2D regular and irregular waves with wide ranges of wave heights and periods is considered. The motion responses of the floating breakwater with directional mooring line have also been measured. Emphasis is given on the effect of the incident wave characteristics; the inclined angle of the floating breakwater was kept at 15 degrees for all the set of experiments. A two-dimensional wave flume was used in the experiment; the incident and transmitted waves, the tensions on the mooring lines and the motion responses of the floating breakwaters were measured. Results showed that the new floating breakwater had a better performance for mid-level porosity in long and short-wave cases. |
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