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The harmonic polynomial cell method for moving bodies immersed in a Cartesian background grid
(Chapter; Peer reviewed, 2015)In numerical simulations with moving bodies, and often with complex geometries, generation of high-quality body-fitted grids is a cumbersome and time-consuming task. An alternative is to use a fixed (Cartesian) background ... -
The impact of a passive tuned mass damper on offshore single-blade installation
(Journal article; Peer reviewed, 2018)Single-blade installation is a method suitable for the installation of blades on large wind turbines. For single-blade installations on offshore monopile-type wind turbines, a jack-up vessel is often involved, and each ... -
The importance of added resistance and speed of ships due to waves for ships designed for slow-steaming
(Master thesis, 2011)In the recent years the greenhouse effect in the atmosphere has become much stronger because of emissions of greenhouse gases on the earth. One of these gases is CO2. This may come from combustion of fossil fuel. The ... -
The Importance of Friction Reduction in Boundary Layers
(Master thesis, 2019)The modification of boundary layers for the purpose of drag reduction and overall propulsive efficiency for marine vehicles is an interesting concept, one which has been studied through swimming fish, which can alter the ... -
The influence of fish on the mooring loads of a floating fish farm
(Chapter, 2015)The influence of fish on the mooring loads of a floating fish farm is studied numerically and experimentally. Two experimental series were conducted. One case was model tests with artificial fish. Nine rigid fish models ... -
The influence of fish on the mooring loads of a floating net cage
(Journal article; Peer reviewed, 2018)The influence of fish on the mooring loads of a floating net cage is studied numerically and experimentally. Two experimental series were conducted. One case was model tests with artificial fish. Nine rigid fish models ... -
The influence of ice classification on design of an offshore supply vessel
(Master thesis, 2013)It is estimated that 22% of the worlds remaining petroleum resources are located in the Arctic region and 88% are located offshore. To produce these resources is it needed with equipment that can handle the environmental ... -
The influence of route choice and operating conditions on fuel consumption and CO2 emission of ships
(Journal article; Peer reviewed, 2016)The influence of various parameters, such as ship initial speed (full ahead and lower engine loads), loading condition, heading angle and weather conditions on ship fuel consumption and CO2 emission is presented. A reliable ... -
The influence of the choice of propeller design tool on propeller performance
(Master thesis, 2016)In this master thesis different propeller design and analysis methods are presented and compared in terms of the accuracy and computational efficiency of their theory. These methods include lifting line, vortex lattice ... -
The influence of using a ducted propeller on motions and speed loss of a ship in waves
(Master thesis, 2013)Comparisons of experimental and numerical investigations into the effect of duct on motion variables and speed loss for a given ship model are presented. The purpose of these comparisons is to verify the advantage of using ... -
The Modelling of Suction Caisson Foundations for Multi-Footed Structures
(Master thesis, 2014)Suction caissons are a type of offshore foundation that allow for fast and noise-free installation and decommissioning of offshore structures. They have been used for 20 years in the oil and gas industry and are also ... -
The Narimanov-Moiseev multimodal analysis of nonlinear sloshing in circular conical tanks
(Journal article, 2020)The chapter reports mathematical aspects of the Narimanov–Moiseev multimodal modelling for the liquid sloshing in rigid circular conical tanks, which perform small-magnitude oscillatory motions with the forcing frequency ... -
The Optimal Size of an LNG Fuel Tank on a Shuttle Tanker in the North Sea
(Master thesis, 2019)Denne oppgaven gir en oversikt over hvilke faktorer størrelsen på LNG drivstofftanken er avhengig av, og hvordan disse kan brukes til å estimere den optimale størrelsen på LNG drivstofftanken for en skytteltanker i ... -
The potential energy savings by application of a wave foil on the autonomous container vessel ReVolt
(Master thesis, 2015)ReVolt is an electrically propelled, autonomous concept container ship designed by DNV GL to minimize the energy consumption and cost; however, the added resistance in waves is a large resistance contributor. Effectively, ... -
The potential for a GIB based STN navigation system with ice drift compensation and experiences from underwater operations in the arctic
(Master thesis, 2022)Denne oppgaven foreslår en løsning på undervannsnavigasjon under isen ved å se på mulighetene for å bruke STN baserte navigasjonssystemer med en feed-forward isdrift kompensasjon for å konvertere is-relative DVL målinger ... -
The sinking of the El Faro: predicting real world rogue waves during Hurricane Joaquin
(Journal article; Peer reviewed, 2017)We present a study on the prediction of rogue waves during the 1-hour sea state of Hurricane Joaquin when the Merchant Vessel El Faro sank east of the Bahamas on October 1, 2015. High-resolution hindcast of hurricane-generated ... -
The status of risk assessments in Norwegian fish farming
(Chapter, 2017)The oceans will become the major contributor to the needed increase in global food production towards 2050. The fish farming industry is characterised by operations that are susceptible to changing weather, wind and currents, ... -
The Surface Wave Effects on the Performance and the Loading of a Tidal Turbine
(Journal article; Peer reviewed, 2018)When tidal turbines are utilized in the most energetic waters where there are significant waves, the assessment of the surface wave effects are of great concerns. The objective of this paper is to contribute to a fundamental ... -
Theoretical and experimental investigation of a free running fishing vessel at small frequency of encounter
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:327, Doctoral thesis, 2013)The hydrodynamic behaviour of a fishing vessel in a seaway was studied. The focus was on small frequencies of encounter, corresponding to following and stern quartering seas, where fishing vessels are susceptible to capsize. ...