Inlämning av Examensarbete / Submission of Thesis

Mohamed Salim Ramadan; Sorawan Saichua BTH-AMT-EX--2010/D-08--SE, pp. 82. ING/School of Engineering, 2010.

The work

Författare / Author: Mohamed Salim Ramadan, Sorawan Saichua
Titel / Title: Fluid-Structure Interaction Analysis for Hydrodynamic Parameters in Semi-Submerged Axisymmetric Buoy
Abstrakt Abstract:

The dynamic heave responses of the semi-submerged axisymmetric buoy of two different geometries to the excitations equivalent to impulse excitation technique were represented by mechanical single-degree-of-freedom models. Founded on linear and 2-dimensional potential flow theory, the fluid-structure interactions were modeled and simulated with finite element approach. The numerical results obtained in transient harmonic oscillations were implemented with the frequency analysis tools and scaled by the input force spectrum. The records of the frequency response receptance were used in the assessment of hydrodynamic added mass and damping coefficients at the apparent linear resonance frequency. The buoyancy stiffness was calculated with relation to the hydrostatic pressure. Comparison with the experimental and analytical results lent validity to the numerical models.

Ämnesord / Subject: Maskinteknik - Mechanical Engineering\General
Maskinteknik - Mechanical Engineering\Structural Dynamics
Maskinteknik - Mechanical Engineering\Structural Mechanics
Nyckelord / Keywords: Added mass, Added damping, ALE, COMSOL Multiphysics, Fluid-structure interaction (FSI), Two-phase flow

Publication info

Dokument id / Document id:
Program:/ Programme Masters Programme in Mechanical Engineering 120 ECTS
Registreringsdatum / Date of registration: 12/09/2010
Uppsatstyp / Type of thesis: Masterarbete/Master's Thesis (120 credits)


Handledare / Supervisor: Ansel Berghuvud
Examinator / Examiner: Ansel Berghuvud
Organisation / Organisation: Blekinge Institute of Technology
Institution / School: ING/School of Engineering

+46 455 38 50 00

Files & Access

Bifogad uppsats fil(er) / Files attached: bth_amt_ex_2010d08_se.pdf (1579 kB, öppnas i nytt fönster)