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Author: | Külaots, Reino |
Title: | Numerical and experimental modelling of ship resistance in compressive ice channels |
Publication type: | Master's thesis |
Publication year: | 2012 |
Pages: | 72 + [16] Language: eng |
Department/School: | Sovelletun mekaniikan laitos |
Main subject: | Laivanrakennusoppi (Kul-24) |
Supervisor: | Kujala, Pentti |
Instructor: | Montewka, Jakub ; Tabri, Kristjan |
OEVS: | Electronic archive copy is available via Aalto Thesis Database.
Instructions Reading digital theses in the closed network of the Aalto University Harald Herlin Learning CentreIn the closed network of Learning Centre you can read digital and digitized theses not available in the open network. The Learning Centre contact details and opening hours: https://learningcentre.aalto.fi/en/harald-herlin-learning-centre/ You can read theses on the Learning Centre customer computers, which are available on all floors.
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Location: | P1 Ark Aalto 3496 | Archive |
Keywords: | ice resistance compressive ice ice model testing |
Abstract (eng): | The effect of compressive ice fields on ships has been a research topic for a few decades, but still the knowledge is limited on this subject. In this thesis the ship resistance in compressive ice channels has been studied. The motivation to undertake this research comes from a need to find and assess simple methods for estimating the resistance of vessels in compressive ice situations and for using them in a traffic ability model. The need for simple methods comes from the fact that the specific knowledge about vessels visiting the Baltic Sea is limited. The presented calculation methods are evaluated by using model testing data which was gathered during the SAFEWIN project's model tests. Additional model tests were conducted as a part of this thesis for checking some of the assumptions made based on the first tests. An unexpected resistance component was discovered through the additional tests. A possible explanation and estimation method for evaluating this component is presented and analysed. A combined formula for evaluating the different resistance components assumed to be affecting the model in the model testing is presented. The results show that the general principals and methods used for calculating combined resistances give fairly accurate results. |
ED: | 2013-03-19 |
INSSI record number: 45972
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