Hydroelastic Analysis of a Multi-Module Very Large Floating Structure

Master thesis (2021)

Authors

D.C.M.Y. Regout Civil Engineering & Geosciences

Contributors

Oriol Colomés Offshore Engineering - CEG (mentor)
K.N. van Dalen Dynamics of Structures - CEG (graduation committee member)
A. Antonini Coastal Engineering - CEG (graduation committee member)
R.J. Labeur Environmental Fluid Mechanics - CEG (graduation committee member)
R.P.F. Gomes Blue21 (graduation committee member)
Faculty
Civil Engineering & Geosciences, Civil Engineering & Geosciences
Copyright: © 2021 Dorette Regout
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Published Date

29-10-2021

Language

English

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Faculty

Civil Engineering & Geosciences

Abstract

This thesis concerns a hydroelastic analysis of a multi-module very large floating structure (VLFS), analysed in the frequency domain. To this end, the fluid-structure interaction is described by a 2D model, where the VLFS is represented by four floating beams interconnected with rotational springs. The fluid is modelled as an ideal fluid, and the floating beams are modelled by the Euler-Bernoulli beam theory. The finite element method is applied to solve the governing equations of the fluid motion and the motion of the beams, where the model is built using the FE-library Gridap, written in the Julia programming language.
The aim of the study is to investigate the influence of various module and connection stiffness on the behaviour of the system, with the view to obtain more insight in the complex relation between the hydroelastic response and internal loads, when the system is subject to regular waves.