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Enthalpies of CH4 and CO2 Hydrate Formation and Dissociation Using Residual Thermodynamics
(Master thesis, 2019-11-27)The problem in the processing industries regarding the formation of gas hydrate in pipelines or equipment have inspired much of the research for better understanding of hydrates. The world’s increasing demands for more ... -
Enthalpies of Hydrate Formation and Dissociation from Residual Thermodynamics
(Journal article; Peer reviewed, 2019-12-11)We have proposed a consistent thermodynamic scheme for evaluation of enthalpy changes of hydrate phase transitions based on residual thermodynamics. This entails obtaining every hydrate property such as gas hydrate ... -
Establishing a homogeneous and stable sand pack to study parameters during spontaneous imbibition
(Master thesis, 2018-06-20)Spontaneous imbibition is an important process for oil production during water flooding in porous media and has been widely studied for decades to understand the physics of the process for different boundary conditions. ... -
Estimating the fate of oxygen ion outflow from the high-altitude cusp
(Journal article; Peer reviewed, 2020)We have investigated the oxygen escape-to-capture ratio from the high-altitude cusp regions for various geomagnetic activity levels by combining EDI and CODIF measurements from the Cluster spacecraft. Using a magnetic field ... -
Estimating the Rate of Cessation of Magnetospheric Activity in AMPERE Field‐Aligned Currents
(Peer reviewed; Journal article, 2018-12)The decay of magnetospheric activity when driving is turned off (to a minimum) was measured in total field‐aligned current estimates from the Active Magnetosphere and Planetary Electrodynamics Response Experiment (AMPERE) ... -
Estimation and Verification of Hydrodynamic Parameters of an ROV using CFD
(Master thesis, 2023-05-26)The hydrodynamic added mass and damping of a Remotely Operated Vehicle (ROV) are estimated using Computational Fluid Dynamics (CFD) based on OpenFOAM. The estimated hydrodynamic parameters are verified with recorded data ... -
Estimation of cold plasma outflow during geomagnetic storms
(Peer reviewed; Journal article, 2015-12-01)Low-energy ions of ionospheric origin constitute a significant contributor to the magnetospheric plasma population. Measuring cold ions is difficult though. Observations have to be done at sufficiently high altitudes and ... -
Estimation of In-situ Polymer Rheology by Simulation of Radial Flow Experiment
(Master thesis, 2017-06-22)Most experiments about in-situ rheology of polymer flow in porous media presented in literature is executed on linear cores and hence, performed during steady state conditions where the pressure drop is constant over the ... -
Estimation of Relative Permittivity and Thickness for Dielectric Materials Using an Open-Ended Waveguide Sensor
(Master thesis, 2016-09-10)The main goal of this thesis has been to conduct a feasibility study on an open-ended waveguide sensor as a tool for estimating the relative permittivity and thickness of dielectric layers in the thickness range 0.5-5 cm. ... -
Et kritisk og konstruktivt blikk på naturfaget i norsk skole
(Chapter, 2021)Dette kapitlet retter et kritisk, men konstruktivt blikk på naturfag, og foretar en gjennomgang av naturfag og naturfagdidaktikk innen forskning og i praksis. Kapitlet starter med å beskrive og diskutere naturfagets ... -
Ethernet-Based Control System and Data Readout for a Proton Computed Tomography Prototype
(Master thesis, 2018-06-23)At the University of Bergen (UiB), work is underway to develop a proton based computed tomography prototype. Proton CT (pCT) is an alternative to photonbased imaging that shows great promise as a technology for use in ... -
Eulerian CFD model of direct absorption solar collector with nanofluid
(Journal article; Peer reviewed, 2020)Solar energy is the most promising source of renewable energy. However, the solar energy harvesting process has relatively low efficiency, while the practical use of solar energy is challenging. Direct absorption solar ... -
Eulerian CFD Model of Direct Absorption Solar Collector with Nanofluid
(Master thesis, 2019-12-13)Solar energy is the most promising source of renewable energy. However, the solar energy harvesting process has relatively low efficiency, while the use of solar energy is challenging. Direct Absorption Solar Collectors ... -
Evaluating tertiary water based EOR methods on the Veslefrikk field, with emphasis on analyzing sodium silicate injection by numerical simulation
(Master thesis, 2009-04-29)The applicability of some water based EOR methods was evaluated for the Veslefrikk field. Diversion of injection water, by injection of sodium silicate, was regarded as having an EOR potential. This was analyzed by numerical ... -
Evaluating the price of tiny kinetic mixing
(Peer reviewed; Journal article, 2019)We consider both “bottom-up” and “top-down” approaches to the origin of gauge kinetic mixing. We focus on the possibilities for obtaining kinetic mixings ϵ which are consistent with experimental constraints and are much ... -
Evaluation and design of readout electronics for electron and proton detectors
(Master thesis, 2017-06-16)Researchers at Birkeland center of space science have initiated a project where the precipitating flux of energetic electrons and protons into the middle atmosphere will be measured. An instrument will be attached to a low ... -
Evaluation of Methane and Water Structure at a Hematite Surface - A Hydrate Prevention Perspective
(Master thesis, 2017-09-25)In Norway oil and gas is found in reservoirs below the North Sea and the Barents Sea. When this is transported through pipelines it is exposed to temperatures and pressures in the hydrate stability zone. If sufficient ... -
Evaluation of the Field Kelvin Probe for non-intrusive condition monitoring of concrete reinforcements
(Master thesis, 2020-04-24)Early detection of corrosion in reinforced concrete is of great importance for safe operation of the concrete based infrastructure we rely on such as bridges and large buildings. Undetected corrosion in the steel reinforcements ... -
Evaluation of Turbulence Models in Gas Dispersion
(Master thesis, 2016-06-01)Several earlier model validation studies for predicting gas dispersion scenarios have been conducted for the three RANS two-equation eddy viscosity turbulence models, the standard k-ε (SKE), Re- Normalisation group k-ε ... -
Event activity-dependence of jet production in p-Pb collisions at \(\sqrt{s_{\rm NN}} = 5.02\) TeV measured with semi-inclusive hadron+jet correlations by ALICE
(Peer reviewed; Journal article, 2017-11)We report measurement of the semi-inclusive distribution of charged-particle jets recoiling from a high transverse momentum \(p_{\rm T}\) hadron trigger, for p-Pb collisions at \(\sqrt{s_{\rm NN}} = 5.02\) TeV, in p-Pb ...