Browsing Institutt for bygg- og miljøteknikk by Title
Now showing items 2850-2869 of 4607
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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 ... -
Numerical Modelling of Hydraulics and Sediment at the Headworks of Kali Gandaki A Hydropower Plant, Nepal
(Master thesis, 2020)The Kali Gandaki A Hydropower Plant (KGA) has been facing issues related to unfavourable flow conditions at intake and settling basins, thereby hindering the efficient settling of the sediments, as realized from the excessive ... -
Numerical modelling of hydraulics and sediment at the inlet location of Sediment Bypass Tunnel (SBT) - Test Case: Upper Arun Hydroelectric Project, Nepal
(Master thesis, 2020)The study aims to analyse the effects of sediment bypass tunnel inlet location on intake hydraulics and suspended sediment removal for a reservoir of Upper Arun Hydroelectric Project (UAHEP) using numerical modelling ... -
Numerical Modelling of Irregular waves and Irregular Wave Forces with REEF3D
(Master thesis, 2015)In this study, the irregular wave generation using the numerical model REEF3D is tested and validated. The testing for the empty wave tank is done in order to test the irregular wave generation and the propagation. The ... -
Numerical modelling of pipeline scour under the combined action of waves and current with free-surface capturing
(Journal article; Peer reviewed, 2019)Understanding the pipeline scour processes under the combined action of waves and current is essential for adequate scour protection measures. This paper presents the numerical modelling of pipeline scour under the ... -
Numerical modelling of run-out of sensitive clay slide debris
(Master thesis, 2013)Flow slides in sensitive clay deposits are common phenomena in Scandinavia and Canada. These flow slides have caused catastrophes to infrastructure and human life. The post-failure movements of such flow slides usually are ...