FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2891630747> ?p ?o ?g. }

• W2891630747 abstract "This thesis is concerned with the use of the open source computational fluid dynamics (CFD) software package, OpenFOAM® for predicting and analysing the behaviour of a near-shore oscillating wave surge converter (OWSC), when subject to various types of ocean wave conditions in a numerical wave tank (NWT). OpenFOAM® which utilises a Finite Volume Method (FVM) is used to solve the incompressible, Reynolds Averaged Navier-Stokes (RANS) equations for a two-phase fluid, based on a Volume of Fluid (VOF) phase-fraction approach to capture the interface between the air and water phases.Preliminary studies on classic wave-structure interaction benchmark cases, involving a fixed and a vertically oscillating semi-immersed horizontal cylinder are carried out. The gradual transition of the linear to non-linear behaviour of the horizontal and vertical forces induced on a fixed cylinder when subject to various regular waves, and the amplitude ratios of the surface waves elevations generated by the prescribed oscillatory motion of the cylinder, are shown to provide good overall agreement within the limitations of the relevant theory and the experimental data in the literature.The OWSC is modelled with the inclusion of a Power Take-Off (PTO) system, using a linear damping restraint, and simulated in two-dimensional (2D) and three-dimensional (3D) setups. The 2D and 3D numerical results, such as the surface wave elevations, flap angular velocity, PTO torque and flap angular displacement, compare well with one another and with the experimental data for operational regular head-on and oblique wave conditions. Small discrepancies between numerical results and experimental data are likely to be caused by non-linear behaviour of the PTO system. Pressure distributions on the flap surfaces and forces induced on the flap and hinge of the OWSC for various wave conditions are also presented. The effects between 2D and 3D wave-structure interactions become more significant when subject to large waves that break during impact. Comparison between the full scale and 1:24 scale numerical results of the OWSC shows no significant evidence of viscous and scaling effects.The validated 2D OWSC model is also subject to embedded focused waves, to predict the worse possible scenario of wave loading in extreme wave conditions. The delay of the focus event breaking is shown to affect the slamming behaviour for the larger focus event wave heights. Incorporation of a focused wave at different phase positions within a background of regular waves reveals that the focus event wave height has little effect on the peak tangential force on the flap during the slamming event, when a PTO cut-off mechanism is implemented to prevent excessive torque surges. In contrast, the peak radial force on the flap and the maximum resultant force on the hinge appear to respond more sensitively to the focus event wave height.It has been demonstrated that OpenFOAM® is able to provide a comprehensive understanding of the complex hydrodynamic analysis and prediction of highly non-linear wave-structure interactions for an OWSC, which give useful guidance and confidence to WEC developers on the design considerations relevant to the OWSC systems." @default.
• W2891630747 created "2018-09-27" @default.
• W2891630747 creator A5000237225 @default.
• W2891630747 creator A5047295583 @default.
• W2891630747 date "2018-09-05" @default.
• W2891630747 modified "2023-09-23" @default.
• W2891630747 title "Assessments of Wave-Structure Interactions for an Oscillating Wave Surge Converter using CFD" @default.
• W2891630747 hasPublicationYear "2018" @default.
• W2891630747 type Work @default.
• W2891630747 sameAs 2891630747 @default.
• W2891630747 citedByCount "0" @default.
• W2891630747 crossrefType "dissertation" @default.
• W2891630747 hasAuthorship W2891630747A5000237225 @default.
• W2891630747 hasAuthorship W2891630747A5047295583 @default.
• W2891630747 hasConcept C120665830 @default.
• W2891630747 hasConcept C121332964 @default.
• W2891630747 hasConcept C127210992 @default.
• W2891630747 hasConcept C1633027 @default.
• W2891630747 hasConcept C169596890 @default.
• W2891630747 hasConcept C171889981 @default.
• W2891630747 hasConcept C180205008 @default.
• W2891630747 hasConcept C203311528 @default.
• W2891630747 hasConcept C2524010 @default.
• W2891630747 hasConcept C2777974851 @default.
• W2891630747 hasConcept C29836780 @default.
• W2891630747 hasConcept C32526432 @default.
• W2891630747 hasConcept C33923547 @default.
• W2891630747 hasConcept C38349280 @default.
• W2891630747 hasConcept C44886760 @default.
• W2891630747 hasConcept C53630964 @default.
• W2891630747 hasConcept C57879066 @default.
• W2891630747 hasConcept C74650414 @default.
• W2891630747 hasConceptScore W2891630747C120665830 @default.
• W2891630747 hasConceptScore W2891630747C121332964 @default.
• W2891630747 hasConceptScore W2891630747C127210992 @default.
• W2891630747 hasConceptScore W2891630747C1633027 @default.
• W2891630747 hasConceptScore W2891630747C169596890 @default.
• W2891630747 hasConceptScore W2891630747C171889981 @default.
• W2891630747 hasConceptScore W2891630747C180205008 @default.
• W2891630747 hasConceptScore W2891630747C203311528 @default.
• W2891630747 hasConceptScore W2891630747C2524010 @default.
• W2891630747 hasConceptScore W2891630747C2777974851 @default.
• W2891630747 hasConceptScore W2891630747C29836780 @default.
• W2891630747 hasConceptScore W2891630747C32526432 @default.
• W2891630747 hasConceptScore W2891630747C33923547 @default.
• W2891630747 hasConceptScore W2891630747C38349280 @default.
• W2891630747 hasConceptScore W2891630747C44886760 @default.
• W2891630747 hasConceptScore W2891630747C53630964 @default.
• W2891630747 hasConceptScore W2891630747C57879066 @default.
• W2891630747 hasConceptScore W2891630747C74650414 @default.
• W2891630747 hasLocation W28916307471 @default.
• W2891630747 hasOpenAccess W2891630747 @default.
• W2891630747 hasPrimaryLocation W28916307471 @default.
• W2891630747 hasRelatedWork W140020149 @default.
• W2891630747 hasRelatedWork W1972626443 @default.
• W2891630747 hasRelatedWork W1996027723 @default.
• W2891630747 hasRelatedWork W2025464754 @default.
• W2891630747 hasRelatedWork W2037817261 @default.
• W2891630747 hasRelatedWork W2086944411 @default.
• W2891630747 hasRelatedWork W2094736164 @default.
• W2891630747 hasRelatedWork W2280936524 @default.
• W2891630747 hasRelatedWork W2318100066 @default.
• W2891630747 hasRelatedWork W2522893911 @default.
• W2891630747 hasRelatedWork W2575542582 @default.
• W2891630747 hasRelatedWork W2591876257 @default.
• W2891630747 hasRelatedWork W2792204388 @default.
• W2891630747 hasRelatedWork W2793681070 @default.
• W2891630747 hasRelatedWork W2793839172 @default.
• W2891630747 hasRelatedWork W2885203362 @default.
• W2891630747 hasRelatedWork W2956446014 @default.
• W2891630747 hasRelatedWork W2984290041 @default.
• W2891630747 hasRelatedWork W3120929191 @default.
• W2891630747 hasRelatedWork W36505741 @default.
• W2891630747 isParatext "false" @default.
• W2891630747 isRetracted "false" @default.
• W2891630747 magId "2891630747" @default.
• W2891630747 workType "dissertation" @default.