dc.contributor.author | Alexandris-Galanopoulos, Andreas![]() |
en |
dc.contributor.author | Αλεξανδρής-Γαλανόπουλος, Αντρέας![]() |
el |
dc.date.accessioned | 2023-04-19T11:09:19Z | |
dc.date.available | 2023-04-19T11:09:19Z | |
dc.identifier.uri | https://dspace.lib.ntua.gr/xmlui/handle/123456789/57548 | |
dc.identifier.uri | http://dx.doi.org/10.26240/heal.ntua.25245 | |
dc.rights | Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ελλάδα | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/gr/ | * |
dc.subject | Semi-Lagrangian scheme | en |
dc.subject | Operator splitting | en |
dc.subject | Finite Volume method | en |
dc.subject | Wave-shear current interaction | en |
dc.subject | Nonlinear waves over general bathymetry | en |
dc.subject | Ημι-Λαγκρανζιανή μέθοδος | el |
dc.subject | Μέθοδος χωρισμού τελεστών | el |
dc.subject | Μέθοδος Πεπερασμένων Όγκων | el |
dc.subject | Μη γραμμικά κύματα σε γενική βαθυμετρία | el |
dc.subject | Αλληλεπίδραση κύματος-ρεύματος | el |
dc.title | A Semi-Lagrangian Splitting scheme for the free surface Euler system with application to rotational wave flows in general bathymetry | en |
dc.contributor.department | Division of Ship and Marine Hydrodynamics | el |
heal.type | bachelorThesis | |
heal.classification | Computational Fluid Dynamics | en |
heal.language | en | |
heal.access | free | |
heal.recordProvider | ntua | el |
heal.publicationDate | 2023-02-27 | |
heal.abstract | In the present thesis, a numerical scheme for the Free-Surface Euler system in general bathymetry is presented. The σ-coordinate is generalized in a layer-wise manner and the Generalized-Coordinate Euler system (GCE) is proposed. The system is treated by a standard operator splitting technique with the addition of a layer kinematic scheme. As a result, the GCE is split into the Multilayer Shallow Water Equations (mSWE), followed by the proposed Vertical Remeshing Operator (VRO) and the standard Pressure Correction Operator (PCO). Those three operators constitute the Semi-Lagrangian Splitting scheme (SLS). The mSWE and VRO are solved by two separate Finite Volume schemes. The PCO is solved by a partially implicit approach, followed by the solution of a Poisson-like equation on a staggered grid through a Finite Difference method. The SLS’s performance is tested on the wave propagation over variable bathymetry and wave-current interaction over a flat bottom cases. | en |
heal.advisorName | Belibassakis, Kostas![]() |
en |
heal.committeeMemberName | Kaiktsis, Lambros![]() |
en |
heal.committeeMemberName | Papadakis, George![]() |
en |
heal.academicPublisher | Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Ναυπηγών Μηχανολόγων Μηχανικών. Τομέας Ναυτικής Μηχανολογίας | el |
heal.academicPublisherID | ntua | |
heal.numberOfPages | 95 σ. | el |
heal.fullTextAvailability | false |
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