Browsing Bergen Open Research Archive by Title
Now showing items 20227-20246 of 34096
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Modelling of multiphase flow through a subsea recirculation line equipped with a choke
(Master thesis, 2023-02-23)A peculiar problem encountered in engineering practices for multiphase flows is the pressure loss in piping systems. Because of the variations in viscosities, densities, and velocities of the fluid phases, multiphase systems ... -
Modelling of OBS Data Across the Vestbakken Volcanic Province
(Master thesis, 2011)A P-Wave model of a 384 km long Ocean Bottom Seismometer profile has been modelled by use of ray-tracing. The profile, Bear Island South (BIS-2008), crossses the transtensional Vestbakken Volcanic Province and the boundary ... -
Modelling of the Shear Dilation Based Hydraulic Stimulation in Enhanced Geothermal Systems Considering Fractures in Different Scales
(Conference lecture, 2016-09)A numerical approach for modelling of shear dilation of existing fractures in hydraulic stimulation of geothermal reservoirs at low elevated pressures is presented. The fractured rock in the reservoir is modelled as a ... -
Modelling of Three-Phase Flow Functions for Applications in Enhanced Oil Recovery
(Doctoral thesis, 2009-05-22) -
Modelling of vented dust explosions – empirical foundation and prospects for future validation of CFD codes
(IChemE Symposium Series;154, Chapter; Peer reviewed, 2008)Explosion venting is the most frequently used method for mitigating the effects from accidental dust explosions in the process industry. Optimal design of vent systems and credible execution of risk assessments in powder ... -
Modelling Oscillatory Patterns in the Bovine Estrous Cycle with Boolean Delay Equations
(Journal article; Peer reviewed, 2021)Boolean delay equations (BDEs), with their relatively simple and intuitive mode of modelling, have been used in many research areas including, for example, climate dynamics and earthquake propagation. Their application to ... -
Modelling overfow using mixed integer programming in short‑term hydropower scheduling
(Journal article; Peer reviewed, 2023)Short-term hydropower scheduling seeks to find a production schedule that maximizes profit, but must also consider the hydrological balance and risk of overflow. Overflow is by nature a non-linear and non-convex phenomenon. ... -
Modelling radiation damage to pixel sensors in the ATLAS detector
(Peer reviewed; Journal article, 2019)Silicon pixel detectors are at the core of the current and planned upgrade of the ATLAS experiment at the LHC. Given their close proximity to the interaction point, these detectors will be exposed to an unprecedented amount ... -
Modelling sea lice control by lumpfish on Atlantic salmon farms: Interactions with mate limitation, temperature and treatment rules
(Journal article; Peer reviewed, 2019)Atlantic salmon farming is one of the largest aquaculture sectors in the world. A major impact on farm economics, fish welfare and, potentially, nearby wild salmonid populations, is the sea louse ectoparasite Lepeophtheirus ... -
Modelling substances present in an amine scrubbing plant during CO2 capture with aqueous monoethanolamines using multivariate data analysis and ATR-FTIR spectroscopy
(Master thesis, 2018-06-20)Since the 19th century, an increase in the earth’s temperature has been recorded. The rise in temperature is caused mainly by anthropogenic greenhouse gases, such as CO2. Industrial processes are the cause of 40% of the ... -
Modelling supercapacitors using a dynamic equivalent circuit with a distribution of relaxation times
(Peer reviewed; Journal article, 2019)Supercapacitors are often modelled using electrical equivalent circuits with a limited number of branches. However, the limited number of branches often cannot explain long-term dynamics, and one therefore has to resort ... -
Modelling temporal changes in the gravity field in the Nankai Trough Subduction Zone, Japan
(Master thesis, 2019-12-20)The Nankai trough subduction zone off southwest Japan is prone to large earthquakes, causing tsunamis and great damages to the nearby islands. Linking the sources of these earthquakes to asperities along the plate interface ... -
Modelling the descent of nitric oxide during the elevated stratopause event of January 2013
(Peer reviewed; Journal article, 2017-03)Using simulations with a whole-atmosphere chemistry-climate model nudged by meteorological analyses, global satellite observations of nitrogen oxide (NO) and water vapour by the Sub-Millimetre Radiometer instrument (SMR), ... -
Modelling the Distribution of Norwegian Coastal Cod (Gadus morhua)
(Master thesis, 2023-06-02)Knowledge about a species' distribution, and the factors driving the distribution, is important in both fishery management and conservation. It can help explain distributional shifts and variations in abundance as a response ... -
Modelling the dynamics of firm valuation: An assessment of impact of exchange rate fluctuations on firm value using system dynamics
(Journal article; Peer reviewed, 2022)Exchange rate volatility is a vital issue in international finance due to its effect on the value of the firm, depending on firm's exposure to the exchange rate risk. However, this impact is not clear in literature as ... -
Modelling the effect of ocean waves on the atmospheric and ocean boundary layers
(Peer reviewed; Journal article, 2012)Ocean waves, in addition to generating direct forces on fixed and floating offshore wind generator structures, also have significant indirect effects via their influence on the atmospheric and oceanic boundary layers above ... -
Modelling the Impact of Coordinated Policies to Reduce Sea Lice Abundance in Farmed Salmon Populations
(Master thesis, 2018-06-29)Farmed salmon has large potential as a source of food to the worlds growing population. It is also an important source of income, both to local communities and Norway. The introduction of large biomass into the sea by the ... -
Modelling the non-Hydrostatic Pressure in σ-coordinate Ocean Models
(Master thesis, 2006-09-22) -
Modelling the Socio-Economic Benefits of the Adoption of Climate Information: An Innovative Approach to Subsistence Farmer Adaptation to Climate Change in Garu-Tempane District, Ghana
(Master thesis, 2017-08-29)Decreasing average crop yield resulting mainly from variability and changes in climatic conditions continues to worsen food insecurity and the already low incomes of subsistence farmers in the Garu-Tempane District, Ghana. ... -
Modelling the Spatial Extent of Medium Energy Electron Precipitation
(Doctoral thesis, 2023-09-22)Jordens magnetosfære fungerer som et robust skjold, og beskytter planeten vår mot den nådeløse tilstrømningen av ladede partikler som hovedsakelig stammer fra solens solvind og fra de kosmiske strålene utenfor vårt solsystem. ...