Master Thesis Online
Study of the seakeeping non-linearities through the weak-scatterer approximation of the potential flow theory
Sudhanshu 
Promoteur(s) : Gentaz, Lionel
Date de soutenance : 13-sep-2021 • URL permanente : http://hdl.handle.net/2268.2/13169
Détails
| Titre : | Study of the seakeeping non-linearities through the weak-scatterer approximation of the potential flow theory |
| Titre traduit : | [en] Study of the seakeeping non-linearities through the weak-scatterer approximation of the potential flow theory |
| Auteur : | Sudhanshu
|
| Date de soutenance : | 13-sep-2021 |
| Promoteur(s) : | Gentaz, Lionel |
| Membre(s) du jury : | Bonnefoy, Félicien
Leroy, Vincent |
| Langue : | Anglais |
| Nombre de pages : | 60 |
| Mots-clés : | [en] Nonlinear potential flow solver [en] Weakly Scatterer [en] Seakeeping of Ships and Offshore structures [en] benchmarking [en] CN_WSC [en] fluid mechanics |
| Discipline(s) : | Ingénierie, informatique & technologie > Ingénierie mécanique |
| Centre(s) de recherche : | Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique |
| Public cible : | Chercheurs Professionnels du domaine Etudiants Grand public Autre |
| Institution(s) : | Université de Liège, Liège, Belgique Ecole Centrale de Nantes / Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique, Nantes |
| Diplôme : | Master : ingénieur civil mécanicien, à finalité spécialisée en "Advanced Ship Design" |
| Faculté : | Mémoires de la Faculté des Sciences appliquées |
Résumé
[en] In the framework of the completion of EMShip (Erasmus Mundus Double Master in Ship Design and Offshore Structures) Program, this master thesis was undertaken at LHEEA (Laboratory in Hydrodynamics, Energetics and Atmospheric Environment), a CNRS/Ecole Centrale Nantes research laboratory.
The purpose of this thesis is the estimation of the non-linearities associated with sea-keeping computation encountered in highly cambered waves. Linear methods like NEMOH developed for small displacements computations do not give good result. To estimate nonlinearity the weakly-nonlinear seakeeping code known as CN-WSC (Weak-Scatterer) was developed.
To quantify the non-linearities associated with highly cambered waves, a vertical cylinder was taken and it's motion response are calculated with CN-WSC (Weak-Scatterer) and similar calculations are done with linear code NEMOH. The motions calculated with both methods are compared and differences in the motion for highly cambered waves are illustrated as non-linearities were studied.
Fichier(s)
Document(s)
Sudhanshu_LHEEA_ECN.pdf
Description: Study of the seakeeping non-linearities through the weak-scatterer approximation of the potential flow theory
Taille: 3.27 MB
Format: Adobe PDF
Citer ce mémoire
L'Université de Liège ne garantit pas la qualité scientifique de ces travaux d'étudiants ni l'exactitude de l'ensemble des informations qu'ils contiennent.