Browsing NTNU Open by Author "Æsøy, Vilmar"
Now showing items 41-56 of 56
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Physics-data Cooperative Modeling for Ship Motion Prediction
Wang, Tongtong (Doctoral theses at NTNU;2022:206, Doctoral thesis, 2022)Increasing development on autonomous vehicles and concern on ship navigation safety put forward a higher requirement for ship motion forecasting technology. The predictions of ship motion in the near future can give the ... -
Rapid Prototyping for Estimating Hydrodynamic Coefficients of Scaled Experiments on Subsea Structures during Lifting Operations
Tangen, Martin Håbet (Master thesis, 2019)Offshorenæringen må alltid strekke seg etter bedre teknologiske løsninger. Dynamiske krefter som påvirker maritime-operasjoner er delvis basert på erfaring på grunn av at estimeringen av komplekse geometrier kan være ... -
Remaining useful life predictions for turbofan engine degradation using semi-supervised deep architecture
Ellefsen, Andre; Bjørlykhaug, Emil; Æsøy, Vilmar; Ushakov, Sergey; Zhang, Houxiang (Journal article; Peer reviewed, 2018)In recent years, research has proposed several deep learning (DL) approaches to providing reliable remaining useful life (RUL) predictions in Prognostics and Health Management (PHM) applications. Although supervised DL ... -
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 ... -
Soot Investigation on Fish Oil Spray Combustion in a Constant Volume Cell
Malin, Maximilian Christoph; Krivopolianskii, Vladimir; Rygh, Bjørn; Æsøy, Vilmar; Pedersen, Eilif (Journal article; Peer reviewed, 2015)Maritime environmental regulations stipulate lower emissions from the shipping industry. To cope with these rules, improving the combustion processes, make use of cleaner alternative fuels and implement exhaust gas cleaning ... -
Study of Compression Stages and Cylinder Arrangements for Reciprocating Air Compressor: A Modelling and Simulation Approach
Økland, Thomas Christian (Master thesis, 2023)En modell av en stempelkompressor er utviklet for å studere kompresjonstrinn og sylinderarrangement. Bond-graf metoden er valgt til å utvikle en to-sylindret stempelkompressor med fokus på det termodynamiske og mekaniske. Denne ... -
The Effect of Sloshing on a Tank Pressure Build-up Unit
Banne, Håvard Bolstad (Master thesis, 2017)This thesis work has aimed to identify how sloshing will affect a liquefied natural gas (LNG) fuel tank. The physical nature of LNG means it needs to be kept cooled and pressurized in order to remain in a liquid state. ... -
Thermodynamic Response Enhanced by Sloshing in Marine LNG Fuel Tanks: Experimental Work and Numerical Modelling
Grotle, Erlend Liavåg (Doctoral theses at NTNU; 2018:87, Doctoral thesis, 2018)This thesis presents studies of sloshing and how it influences thermodynamic conditions in liquefied natural gas (LNG) fuel tanks. Liquid in a moving tank mixes more efficiently with the gas, which condenses and is followed ... -
Utvikling og testing av fibertau for OTS
Teige, Øystein August (Bachelor thesis, 2019)Utvikling og testing av fibertau er en bacheloroppgave som er laget for produkt og systemdesign-studentene ved NTNU Ålesund. Oppgaven ble gitt av bedriften OTS AS som holder til på Valderøy i Ålesund. OTS produserer fibertau ... -
Validation of Data-Driven Labeling Approaches Using a Novel Deep Network Structure for Remaining Useful Life Predictions
Ellefsen, Andre; Ushakov, Sergey; Æsøy, Vilmar; Zhang, Houxiang (Journal article; Peer reviewed, 2019)Today, most research studies that aim to predict the remaining useful life (RUL) of industrial components based on deep learning techniques are using piecewise linear (PwL) run-to-failure targets to model the degradation ... -
Virtual Prototyping for Marine Crane Design and Operations
Chu, Yingguang (Doctoral theses;2018:10, Doctoral thesis, 2018)Marine crane system design is an interdisciplinary process involving such as mechanical design, kinematics, multi-body dynamics, hydraulics, and operational control-related tasks. Marine crane operations are inherently ... -
Virtual prototyping for maritime crane design and operations
Chu, Yingguang; Hatledal, Lars Ivar; Zhang, Houxiang; Æsøy, Vilmar; Ehlers, Sören (Journal article; Peer reviewed, 2018)This paper presents the implementation of the virtual prototyping system for maritime crane design and operations. The study is designed to bridge the following gaps in maritime crane system simulations. First, the virtual ... -
Virtual Prototyping of Maritime Systems and Operations: Applications of Distributed Co-Simulations
Skjong, Stian; Rindarøy, Martin; Kyllingstad, Lars Tandle; Æsøy, Vilmar; Pedersen, Eilif (Journal article, 2017)In this work, we demonstrate the use of co-simulation technology in the maritime industry through four relevant examples of applications based on the outcome of the knowledge-building project Virtual Prototyping of Maritime ... -
Virtual prototyping system for maritime crane design and operation based on functional mock-up interface
Chu, Yingguang; Hatledal, Lars Ivar; Sanfilippo, Filippo; Æsøy, Vilmar; Zhang, Houxiang; Schaathun, Hans Georg (Chapter; Peer reviewed, 2015)This paper presents the framework of a virtual prototyping system for the design and simulation of maritime crane operations. By combining the rapid-prototyping approach with the concept of interchangeable interfaces, ... -
Virtual Winch Prototyping-Design, Modeling, Simulation and Testing of A Marine Hydraulic Winch System with Active Heave Compensation.
He, Dahai (Master thesis, 2016)This thesis is to develop a standard virtual prototyping system for hydraulic winch system including developing a library of standard sub-models of hydraulic system, mechanical system and control system (AHC), and visualizing ... -
The whereabouts of interorganizational learning: a maritime case study
Pareliussen, Bjarne; Giskeødegård, Marte Fanneløb; Æsøy, Vilmar (Peer reviewed; Journal article, 2022)Purpose This paper aims to present the results from a case study that investigated interorganizational learning in a buyer and seller relationship in the context of the maritime industry. This examination emphasized ...