Browsing NTNU Open by Author "Halse, Karl Henning"
Now showing items 21-36 of 36
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Mating Control of a Wind Turbine Tower-Nacelle-Rotor Assembly for a Catamaran Installation Vessel
Jiang, Zhiyu; Ren, Zhengru; Gao, Zhen; Sandvik, Peter Christian; Halse, Karl Henning; Skjetne, Roger (Chapter, 2018)The assembly and installation costs of an offshore wind farm can approach 20% of the capital expenditures; therefore, time efficient installation methods are needed for installing offshore wind turbines. This study ... -
Model-free anti-swing control of complex-shaped payload with offshore floating cranes and a large number of lift wires
Ren, Zhengru; Verma, Amrit Shankar; Ataei, Behfar; Halse, Karl Henning; Hildre, Hans Petter (Peer reviewed; Journal article, 2021)Being one of the most commonly used offshore operations, offshore lifting operations become increasingly challenging due to the gradually growing size and weight of payloads. The research on automatic control in lifting ... -
Novel Process of Data-Analysis for Conceptual Ship Design, Method for Estimation of Lightweight
Småriset, Simen (Master thesis, 2022)Kunnskap om tidlige designbeslutninger innen skipsdesign er avgjørende både for en god endelig løsning og effektivitet i hele designprosessen. Denne oppgaven undersøker hvordan moderne dataanalysealgoritmer både kan hjelpe ... -
Numerical calculation of ship appendage resistance using CFD
Christensen, Vebjørn (Master thesis, 2019)Formålet med avhandlingen er å undersøke tileggs motstanden fra en baug tunnelpropell, ved hjelp av Computational Fluid Dynamics programvare. Og for å finne en mulig måte å estimere den ekstra motstanden på. Forskningsspørsmålene ... -
Numerical modelling and dynamic analysis of a wind turbine rotor blade lifting operation from feeder barge using a jack-up vessel - A SIMA simulation
Fallmyr, Håkon (Master thesis, 2023)En marin løfteoperasjon der et offshore vindturbinrotorblad løftes fra en lekter ved hjelp av et jack-up fartøy er en kompleks og vanskelig operasjon. Dette er en operasjon som Equinor ønsker at skal undersøkes med tanke ... -
Numerical Study for a Catamaran Gripper-Monopile Mechanism of a Novel Offshore Wind Turbine Assembly Installation Procedure
Hatledal, Lars Ivar; Zhang, Houxiang; Halse, Karl Henning; Hildre, Hans Petter (Chapter; Peer reviewed, 2017)Current methods for installation of offshore wind turbines are all sensitive to the weather conditions and the present cost level of offshore wind power is more than twice the cost of land-based units, increasing with water ... -
Operational Limit Assessment of Offshore Wind Turbine Blade Mating Process Using Response-Based Criteria
Bhaskaran, Saravanan (Master thesis, 2022)Offshore vindenergi vokser raskt som det foretrukne alternativet for fornybar energi i mange land. De fleste havvindparkene ligger på grunt vann. Installasjon av vindturbinblader til havs blir ofte sett på som en kompleks ... -
Response validation of a submerged floating tunnel segment
Liu, Ting; Hansen Viuff, Thomas; Leira, Bernt Johan; Xiang, Xu; Minoretti, Arianna; Halse, Karl Henning (Peer reviewed; Journal article, 2022)Tube segments are the main structural components of submerged floating tunnels (SFTs). Accurately estimating the hydrodynamic properties of these components is of critical importance for the optimization and safe design ... -
The Role of Ship Simulators and Maneuvering Models in Maritime Operations
Zghyer, Rami (Doctoral theses at NTNU;2023:23, Doctoral thesis, 2023)The concept of autonomy in the maritime domain is attractive from both the safety and efficiency points of view, as in other transportation domains. To investigate the payoffs of autonomy as automation levels increase on ... -
Ship response and manoeuvrability - Main machinery characteristics, configuration modes, and its resulting effect on thrust response. Proposed dynamic ship merit factor / index.
Solevåg, Arne (Master thesis, 2016)This thesis have in general been divided into three parts: Discussion about the traditional approach for station keeping and manoeuvring capability (static approach with dynamic factor), use of more modern tools analysing ... -
Sloshing flows in a free surface anti roll tank - Numerical simulations and experimental validation
Li, Yue; Halse, Karl Henning; Xu, Jiafeng (Chapter, 2016)Anti-roll tanks are tanks fitted onto ships in order to improve their response to roll motion, which has typically the largest amplitude among all the degrees of freedom. This paper presents a comparative study of a Volume ... -
SPH simulation of cylinder and wedge water entries.
Zhong, Zhaonan (Master thesis, 2016)Smoothed particle hydrodynamics (SPH) is a numerical approach applied meshless Lagrangian method in the fluid study, which is different from the common computational fluid dynamics (CFD) on the basis of the Eulerian ... -
Structural Optimisation of an Ice-Strengthened Yacht Vessel
Rødseth, Sondre Gjerset (Master thesis, 2020)Dette prosjektet ble delt inn i to ulike metoder for strukturell optimalisering av en is-klassifisert yacht som skulle bytte klassenotasjon fra isklasse C til polarklasse 6. Oppgaven ble gitt av firmaet Marin Teknikk AS. I ... -
Verifisering av forenklet metode for beregning av bølgeinduserte skipsbevegelser ved hjelp av ShipX/VERES.
Ildstad, Jens Berg; Kolstad, Thomas Mordt (Bachelor thesis, 2016)Denne oppgaven tar for seg to ulike metoder for å beregne bølgeinduserte skipsbevegelser. Det er gjennomført en sammenlikning mellom dataprogrammet ShipX VERES, utviklet av Norsk Marinteknisk Forskningsinstitutt, og en ... -
Virtual Prototyping of a Low-Height Lifting System for Offshore Wind Turbine Installation
Xu, Jiafeng; Ataei, Behfar; Halse, Karl Henning; Hildre, Hans Petter; mikalsen, egil tennfjord (Chapter, 2020)Due to the ever higher demands from the energy market, the quantity, dimension and power capacity of newly installed offshore wind turbines are continuously increasing. In terms of logistical management, economic feasibility ... -
Wave Response Experiments of Fish Farms
van der Meij, Jesper (Master thesis, 2023)Den globale havbruksnæringen er i en fase med store expansjon. Bærekraftig vekst i havbrukssektoren er en flott mulighet til å sikre sunn mat for mange. Det krever strenge regler og forskrifter, som drar nytte av omfattende ...