Blar i Institutt for bygg- og miljøteknikk på tittel
Viser treff 2864-2883 av 4612
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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 ... -
Numerical Modelling of Scour Around an Offshore Jacket Structure Using REEF3D
(Lecture Notes in Civil Engineering;LNCE, volume 22, Chapter, 2019)In the present paper, a numerical investigation of the scouring around offshore jacket structure is carried out. The open-source CFD model REEF3D is used for the numerical modelling. The model solves the Reynolds-averaged ... -
Numerical Modelling of Sediment Transport in the Arctic
(Master thesis, 2015)The purpose of this research is to model coastal erosion mainly dune or bluff erosion in the Arctic for storm event using numerical analysis. A case study of Varandey, Russia is considered for the analysis. The numerical ... -
Numerical Modelling of the Hydrodynamic Effects of Marine Operations in Broken Ice
(Doctoral thesis at NTNU;2015:281, Doctoral thesis, 2015)For sustainable offshore field development and safe navigation in the Arctic seas, reliable numerical models that are capable of simulating the interactions between structures, water and sea ice are needed. The Discrete ... -
Numerical modelling of the interaction between a fish net and fluid using CFD
(Chapter, 2019)A numerical model for the determination of the deformed shape of nets under consideration of hydrodynamic loads and elastic twines is presented. The hydrodynamic forces are incorporated using Morison's formula and force ... -
Numerical Modelling Of The Interaction Of Moving Fish Nets And Fluid
(Chapter, 2020)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 Modelling of Wave Interaction with Floating structures and Moored Floating Structures
(Master thesis, 2018)CFD model is new generation tool in design and engineering challenges. The thesis task was to use CFD model to perform validation of the 6DOF algorithm and the mooring model. The obtained results were successful. -
Numerical Modelling of Wave Overtopping Response to Sea Level Rise with REEF3D::SFLOW
(Master thesis, 2020)Klimaendringer har vært et hovedtema på forskningsområdet nylig fordi det påvirker menneskets livsmiljø. I kystsonen og lavtliggende området forårsaker klimaendringer havnivåstigning, noe som medfører potensiell fare for ... -
Numerical simulation and analysis of phase focused breaking and non-breaking wave impact on fixed offshore platform deck
(Peer reviewed; Journal article, 2020)Extreme wave impact due to tsunamis and storm surge create large wave heights that cause destruction to coastal and offshore structures. Focused waves have been used to represent such extreme waves, and in the present ... -
Numerical simulation and comparison with experiments of a floating wind turbine using a direct forcing method
(Chapter, 2022)The open-source Computational Fluid Dynamic (CFD) code REEF3D is used to simulate the hydrodynamic loads and motion response of a floating wind turbine substructure, the INO WINDMOOR semisubmersible floating wind turbine. ... -
Numerical Simulation of Free-Surface Waves past Two Semi-Submerged Horizontal Circular Cylinders in Tandem
(Journal article; Peer reviewed, 2017)Two-dimensional (2D) numerical simulations are performed to investigate free surface waves past two semi-submerged horizontal circular cylinders in tandem. The 2D simulations are carried out by solving the Unsteady ... -
Numerical Simulation of Friction Losses in Tunnels with Strip Roughness
(Master thesis, 2018)To estimate friction introduced by plastering strips inside of laboratory tunnels, an equation named after Reidar Birkeland is used at NTNU. In this thesis, four different geometries with three different strip distances ... -
Numerical Simulation of Hydrodynamics Around Net Meshes Using REEF3D
(Chapter, 2020)Hydrodynamics and turbulence around net meshes have drawn more and more attention because it is closely related to forces on the structures and safety issues of offshore fish farms. In terms of numerical modeling of forces ...