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Fluid Structure Interaction Modeling of the Dynamic of a Semi Submerged Buoy
Blekinge Institute of Technology, School of Engineering.
Blekinge Institute of Technology, School of Engineering.
2013 (English)Independent thesis Advanced level (degree of Master (Two Years))Student thesisAlternative title
Fluid Structure Interaction Modeling of the Dynamic of a Semi Submerged Buoy (Swedish)
Abstract [en]

This thesis presents a study of buoy systems for wave’s energy by focusing on the development of a model in which modeling of a wave energy conversation is in operation. Throughout the thesis, the buoyancy and motion of the submerged body has been used to describe the wave-buoy interaction. The mathematical model for an investigating buoyancy and the dynamic heave response of this buoy under the two different load cases be considered as a single degree of freedom, which have natural characteristic, mass (M), stiffness (K) and damper (C) of the oscillating buoy which were estimated from the numerical method, because it is very important in the ocean wave stage and essential for the design of offshore installation. By using the Finite Element analysis in the software COMSOL Multiphysics 4.2.a, the fluid structure interactions established on two dimensional potential flow theories and linear are simulated and modeled. Then compared the numerical results which are obtained by transient harmonic oscillations with these of different geometric.

Abstract [sv]

The work presented in this thesis has been carried out to figure out the Fluid Structure Interaction (FSI) analysis of submerged floating buoy at the Department of Mechanical Engineering, Blekinge Institute of Technology, Karlskrona, Sweden, by using COMSOL Multiphysics. The present moment, there is an intense interest to be working in the field of wave energy research. Due to increasing energy demand in the world at an alarming rate and production of electricity from renewable energy sources which is becoming an important in the idea of the development of this technology to become a major player in the energy industry. Many countries are setting ambitious targets in this topic. This growing enthusiasm can be seen in several forms, such as attendance of wave energy conferences, academic research funding and political support. With those support of mechanisms, the wave energy technologies has development. Therefore it is very important to find ways to harness energy from sustainable and clean sources. Wave energy has been under investigation by researchers for decades and continues to be challenging problem. There are many forms of renewable energy system around the world, such as wind mills, ocean energy, tidal and offshore wind, nuclear power and solar power. Robertson [In the late 1860’s] discovered the first wave power boat by harnessing the power of the wave, also inventors and engineers have focused on wave powered technologies over the last century. Their studies are important to understand this resource to extract its energy to produce electricity.

Place, publisher, year, edition, pages
2013. , 66 p.
Keyword [en]
COMSOL Multiphysics, wave energy converter, Dynamic characteristic, Submerged body, Finite Element method (FE), SDOF, ALE.
National Category
Mechanical Engineering
URN: urn:nbn:se:bth-4050Local ID: diva2:831370
Bodekullsvägen 8A, 37435 Karlshamn, Sweden, 0720066024Available from: 2015-04-22 Created: 2013-03-05 Last updated: 2015-06-30Bibliographically approved

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