Blar i Fakultet for ingeniørvitenskap (IV) på tittel
Viser treff 134-153 av 22939
-
A Case Study of Community-Driven Water Supply System Development in Rural Tanzania
(Master thesis, 2023)Tilgang til rent vann er fundamentalt for et godt og langt liv. Likevel hadde bare 45,45 % av den tanzaniske befolkningen grunnleggende tilgang til rent vann i 2020. For å effektivisere utvilkingen har Tanzania, i likhet ... -
A Case Study of How MPD Techniques Can Be Used to Adapt to Uncertain Pore and Fracture Pressure Gradients
(Master thesis, 2014)This thesis aims to identify the potential and limitations of using Managed Pressure Drilling (MPD) in deepwater fields where narrow and unpredictable mud weight windows are encountered. A significant effort has been done ... -
A case study of life cycle impacts of small-scale fishing techniques in Thailand
(Journal article; Peer reviewed, 2017)Fish provides an important source of protein, especially in developing countries, and the amounts of fish consumed are increasing worldwide (mostly from aquaculture). More than half of all marine fish are caught by small-scale ... -
A CFD analysis for the performance assessment of a novel design of plates-in-tank latent storage unit for freezing applications
(Chapter, 2019)In this paper, the charging and discharging processes of a recently developed cold thermal energy storage (CTES) unit integrated into a poultry processing plant is investigated. A mathematical model of the CTES was created ... -
A CFD-model of the Fluid Flow in a Hydrogen Peroxide Monopropellant Rocket Engine in ANSYS Fluent 16.2
(Master thesis, 2016)The use of hydrazine in monopropellant thrusters has dominated the market for several decades. Due to the toxic nature of hydrazine, the interest in developing thrusters based on green propellants has increased. A common ... -
A classification method for scaling river biotopes for assessing hydropower regulation impacts
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:140, Doctoral thesis, 2005)This thesis describes the development of a habitat assessment methodology based on theories of hydroecology for use in river basin management. The methodology includes a robust habitat classification system and provides ... -
A Closed Loop Inverse Kinematics Solver Intended for Offline Calculation Optimized with GA
(Journal article; Peer reviewed, 2018)This paper presents a simple approach to building a robotic control system. Instead of a conventional control system which solves the inverse kinematics in real-time as the robot moves, an alternative approach where the ... -
A cloud-based pipeline for Event Sourcing of geospatial data
(Master thesis, 2020)Mange geografiske datasett blir oppdatert samlet, med jevnlig publisert av fullverdige, nye versjoner. For en del applikasjoner er imidlertid det historiske perspektivet og endringen av data mellom versjoner viktig informasjon ... -
A Combined Breakwaters System: A Wave Attenuation Study on the Combination of Submerged and Floating Breakwaters using REEF3D
(Master thesis, 2019)Coastal zones have been a dynamic area and most favoured locations utilized for living, leisure, recreational activities, tourism, commerce and many other human ac- activities. Submerged and floating breakwaters have been ... -
A Combined Gurson-RKR Model for the Ductile to Brittle Transition in Steel
(Master thesis, 2017)The goal of this work was to establish a simulation scheme that incorporates both ductile and brittle fracture modes with respect to temperature in order to describe the aforementioned toughness dependency on temperature. ... -
A combined isotropic, kinematic and distortional hardening model for aluminum and steels under complex strain-path changes
(Journal article; Peer reviewed, 2018)In this work, a new model is proposed for predicting stress transients caused by strain path changes. The model is formulated in stress space, where a second order tensor, i.e., the microstructure stress deviator, is used ... -
A Combined Level Set/Ghost Cell Immersed Boundary Representation for Simulations of Floating Bodies
(Journal article; Peer reviewed, 2016)A six degrees of freedom (6DOF) algorithm is implemented in the open-source CFD code REEF3D. The model solves the incompressible Navier–Stokes equations. Complex free surface dynamics are modeled with the level set method ... -
A Combined Photoplethysmography and Force Sensor Prototype for Improved Pulse Waveform Analysis
(Chapter, 2019)Pulse detection has in recent years received extensive attention in physiological health monitoring, and continuous blood pressure estimation models based on pulse waveform analysis have shown great promises. Two widely ... -
A Combined Precipitation, Yield Stress, and Work Hardening Model for Al-Mg-Si Alloys Incorporating the Effects of Strain Rate and Temperature
(Journal article; Peer reviewed, 2018)In this study, a combined precipitation, yield strength, and work hardening model for Al-Mg-Si alloys known as NaMo has been further developed to include the effects of strain rate and temperature on the resulting stress–strain ... -
A combined wind and wave energy-converter concept in survivalmode: Numerical and experimental study in regular waves with afocus on water entry and exit
(Journal article; Peer reviewed, 2017)Water entry (including slamming) and exit phenomena as well as green water on deck were observed during survivability model tests of a combined wind and wave energy converter concept. Here, a nonlinear numerical ... -
A Comment on “Functions, Commodities and Environmental Impacts in an Ecological-economic Model”
(Research report, 2004)In a recent paper in this journal, Suh (2004) presented a model combining life cycle assessment (LCA) with input-output analysis (IOA); termed \integrated hybrid LCA". In this paper, we discuss various issues relating to ... -
A Comparative Analysis of Machine Learning models in Prognostics and Prediction of Remaining Useful Life of Aircraft Turbofan Engines
(Master thesis, 2024)I jakten på å forbedre sikkerheten og påliteligheten til komplekse industrielle systemer har teknologien for Prognostisk Helsestyring (PHM), spesielt dens komponenter for feildiagnose og prognose, funnet økende relevans i ... -
A comparative Analysis of Propane and Ethylene Glycol as Intermediate Fluid in a LNG Regasification System
(Master thesis, 2015)A LNG regasification system with intermediate fluid vaporizer is studied. Two different intermediate fluids (IF), propane and a mix of mono-ethylene glycol and water, are compared for use in the system. The regasification ... -
A Comparative Analysis of Rheological Characteristics of Polymer Solutions Exposed to Temperature and Stress Over Time
(Master thesis, 2017)A series of experiments with thixotropic fluids composed of polymers and salt, with various temperatures and in circulation was carried out to examine how it influenced the current polymers decompositioning. The results ... -
A comparative analysis of the fluid-structure interaction method and the constant added mass method for ice-structure collisions
(Journal article, 2016)The constant added mass (CAM) method and the fluid-structure interaction (FSI) method are widely used to simulate ship-ship and ship-ice collisions. In the CAM method, the hydrodynamic effect of the surrounding water is ...