Browsing Institutt for bygg- og miljøteknikk by Title
Now showing items 2847-2866 of 4612
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Numerical Modeling of Power Take-Off Damping in an Oscillating Water Column Device
(Journal article; Peer reviewed, 2015)An Oscillating Water Column (OWC) is a wave energy converter consisting of a partially submerged chamber with an air column over the water column. The work done by the air column under excitation by the incident waves is ... -
Numerical Modeling of Swelling Rock
(Master thesis, 2010)This master thesis is focusing on numerical modeling of a swelling rock called anhydrite. If water gets in contact with the rock anhydrite (CaSO4) it transforms into gypsum (CaSO4•2H2O). This chemical process can result ... -
Numerical Modeling of the Effects of Toe Configuration on Throughflow in Rockfill Dams
(Peer reviewed; Journal article, 2021)The rockfill toe structure situated within the downstream slope of rockfill dams is an integral part of a defense mechanism safeguarding the dam structure in throughflow situations. Recent studies have concluded that the ... -
Numerical Modeling of the Interaction of Moving Fish Nets and Fluid
(Peer reviewed; Journal article, 2022)The significant difference in length scales between the flow around a moving fish net and the flow around each twine of the net prevents the resolution of the complete structure within a discrete fluid domain. In this ... -
Numerical Modeling of Wave Hydrodynamics and Wave Interaction with Porous Structures with REEF3D
(Master thesis, 2016)In order to validate the wave hydrodynamics calculated in REEF3D, experiments will be carried out at the wave flume. The experiments will involve studying wave propagation and wave kinematics through the measurement of ... -
Numerical modeling to estimate the impact of built infrastructure on permafrost degradation - Case study from Ilulissat, Greenland
(Master thesis, 2023)Infrastruktur i permafrostlandskap påvirker bakkens termiske regime og kan øke permafrostens nedbrytning. Stabiliteten og brukbarheten til infrastrukturen avhenger likeledes av de termiske forholdene i undergrunnen. ... -
Numerical Modelling and Experiments on Sea Spray Icing
(Doctoral thesis at NTNU;2014:338, Doctoral thesis, 2014)Oil and gas activities in the cold seas are endangered by icing. Icing may occur when water spray or moisture is deposited on a vessel or offshore structure above sea level and the air temperatures is below the freezing ... -
Numerical Modelling for Fluid-Structure Interaction of Aquaculture Collar Structures using a Beam Model
(Master thesis, 2019)I denne oppgaven brukes en 3-dimensjonal strålemodell for fiske merd strukturen, og Newmark-metoden er vedtatt for tidintegrasjon av strukturell dynamisk analyse. For å verifisere og validere strukturløsningen utviklet i ... -
Numerical Modelling of a Pile Model Test with Focus on Small-strain Stiffness
(Master thesis, 2015)This thesis investigated the dynamic characteristics of a 1:20 scale model of a monopile offshore wind turbine foundation, and performed numerical modelling of the model pile using the FEM-software PLAXIS 3D. The build-up ... -
Numerical modelling of air entrainment: In hydraulic engineering
(Doctoral theses at NTNU;2021:62, Doctoral thesis, 2021)Air entrainment in water flows is a natural phenomenon prone to take place when energy is dissipated in flowing water. In nature, air entrainment appears as white water in waterfalls or in waves breaking on the beach. ... -
Numerical Modelling of an Innovative Conical Pile Head Breakwater
(Peer reviewed; Journal article, 2022)When moderate wave activity at the shoreline is acceptable, pile breakwaters can serve as an alternative to conventional breakwaters. Increasing the size of the pile breakwater in the vicinity of the free surface increases ... -
Numerical Modelling of Arctic Coastal Erosion Due to Breaking Waves Impact Using REEF3D
(Chapter, 2017)In the present study, numerical modelling breaking waves over a slope and the resulting erosion in the arctic region is presented. The study is performed with the open-source computational fluid dynamics (CFD) model REEF3D. ... -
Numerical Modelling of Arctic Coastal Hydrodynamics and Sediment Transport
(Master thesis, 2016)Coastal areas are experiencing an increase in human population and activities, both in temperate and in Arctic areas. This change in the coastal areas requires that the areas are safe and reliable in order to not put human ... -
Numerical Modelling of Arctic Costal Erosion
(Doctoral theses at NTNU;2023:213, Doctoral thesis, 2023)Arctic coastal erosion is a growing concern as global climate change affects the planet. Unlike low-latitude and mid-latitude coastal areas, the sediments along Arctic coastlines are often frozen, even during summer. It ... -
Numerical modelling of bank failures during reservoir draw-down
(Journal article; Peer reviewed, 2018)Numerical algorithms are presented for modeling bank failures during reservoir flushing. The algorithms are based on geotechnical theory and the limit equilibrium approach to find the location and the depth of the slides. ... -
Numerical Modelling of Coastal Erosion using MIKE21
(Master thesis, 2013)Coastal erosion is a problem that is increasingly being faced world over. This erosion is important not only in tropical areas but also in the Arctic region. Many numerical models exist today to predict coastal erosion ... -
Numerical Modelling of Debris Flow Hazards using Computational Fluid Dynamics
(Master thesis, 2018)Debris flows are a natural hazard phenomenon that occur periodically in steep mountainous terrain and are typically triggered by heavy precipitation events. The flows are a highly mobile poorly graded mass of soil, rock, ... -
Numerical modelling of distinct ice lenses in frost heave
(Peer reviewed; Journal article, 2021)Frost heave happens when three conditions coincide: the temperature is below the normal freezing point of bulk water, the sub-cooled water is connected to a water reservoir, and the mechanical conditions of the soil allows ... -
Numerical modelling of downstream-migrating antidunes
(Journal article; Peer reviewed, 2017)A numerical model is presented that compute the geometrical dimensions and movement of downstream migrating antidunes. The model solves the Navier–Stokes equations together with the k-epsilon turbulence model to find the ... -
Numerical Modelling of Focussed Wave Hydrodynamics and Focused Wave-structure Interaction with REEF3D
(Master thesis, 2016)General irregular sea state can generate very steep waves which can induce unpleasant dynamic wave loading to the structures. Sometimes these wave loads exceed upper design limits of the structure thus resulting in the ...