Browsing Bergen Open Research Archive by Title
Now showing items 22079-22098 of 34335
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Numerical investigation of direct absorption solar collectors based on carbon black nanofluids
(Journal article; Peer reviewed, 2023)A novel model of a rectangular direct absorption solar collector (DASC) based on carbon black (CB) nanofluids for concentrated solar power is presented herein. Distributions of temperature, velocity, volume fraction of ... -
Numerical Investigation of Natural Gas Hydrate Agglomeration and Deposition in High Water Cut Pipeline Systems
(Master thesis, 2018-06-20)The phenomena of gas hydrate plugging constitute a well known problem in the petroleum production and transport industries. Nevertheless, this issue is still not fully understood, especially for high water cut systems. For ... -
Numerical Investigation of Particle Dispersion in a Gravitational Field and in Zero Gravity.
(Master thesis, 2017-08-31)Combustible solid particles dispersed in gas has previously been discovered to be a precursor to a potential dust explosion. Consequently, a growing interest on the subject has been observed in recent years. Numerous ... -
Numerical Investigation of the Use of Nanofluid in a Photovoltaic Thermal System
(Master thesis, 2022-06-01) -
Numerical Investigation on the Fixed-Stress Splitting Scheme for Biot’s Equations: Optimality of the Tuning Parameter
(Peer reviewed; Journal article, 2019)We study the numerical solution of the quasi-static linear Biot equations solved iteratively by the fixed-stress splitting scheme. In each iteration the mechanical and flow problems are decoupled, where the flow problem ... -
Numerical Methods for Conservation Laws with a Discontinuous Flux Function
(Master thesis, 2011-06-01)When simulating two-phase flow in a porous medium, numerical methods are used to solve the equations of flow, called conservation laws. In the industry, this is done by a reservoir simulator, and the most widely used method ... -
Numerical methods for coupled processes in fractured porous media
(Doctoral thesis, 2019-11-15)Numerical simulations have become essential in the planning and execution of operations in the subsurface, whether this is geothermal energy production or storage, carbon sequestration, petroleum production, or wastewater ... -
Numerical Methods for Flow in a Porous Media with Internal Boundaries
(Department of Applied Mathematics report, Research report, 1997-02) -
Numerical methods for modeling geothermal energy extraction
(Master thesis, 2009-11-20)Modeling of flow in porous media is an important scientific research area, and has been so for decades. It is also one of the major topics within applied mathematics. Models for flow in porous media are for example important ... -
Numerical methods for the simulation of continous sedimentation in ideal clarifier-thickener units.
(Department of Applied Mathematics report, Research report, 2001-10) -
Numerical Modeling of a CO2 Foam EOR and CO2 Storage Field Pilot.
(Master thesis, 2021-11-29) -
Numerical modeling of shear stimulation in naturally fractured geothermal reservoirs
(Doctoral thesis, 2018-03-22)Shear-dilation-based hydraulic stimulations are conducted to create enhanced geothermal systems (EGS) from low permeable geothermal reservoirs, which are initially not amenable to energy production. Reservoir stimulations ... -
Numerical Modeling of Supercritical ‘Out-Salting’ in the “Atlantis II Deep” (Red Sea) Hydrothermal System
(Peer reviewed; Journal article, 2007)Supercritical water behaves close to that of a non-polar fluid and its ability to dissolve salt ions is very low. In rifting locations world-wide, where hot vents occur, it has been shown that seawater attains supercritical ... -
Numerical modeling of wing crack propagation accounting for fracture contact mechanics
(Journal article; Peer reviewed, 2020)As a consequence of shearing, wing cracks can emerge from pre-existing fractures. The process involves the interaction of sliding of the existing fracture surfaces and the tensile material failure that creates wing cracks. ... -
Numerical Modelling of Convection‑Driven Cooling, Deformation and Fracturing of Thermo‑Poroelastic Media
(Journal article; Peer reviewed, 2021)Convection-driven cooling in porous media influences thermo-poro-mechanical stresses, thereby causing deformation. These processes are strongly influenced by the presence of fractures, which dominate flow and heat transfer. ... -
Numerical Modelling of Microbial Enhanced Oil Recovery with Focus on Dynamic Effects: An Iterative Approach
(Master thesis, 2015-06-27)Recovering more of the available oil has been a main driver behind the extensive work done in the field of enhanced oil recovery (EOR) over the last decades. Microbial en- hanced oil recovery (MEOR) has been heavily ... -
Numerical modelling of organic waste dispersion from fjord located fish farms
(Peer reviewed; Journal article, 2011-04-21)In this study, a three-dimensional particle tracking model coupled to a terrain following ocean model is used to investigate the dispersion and the deposition of fish farm particulate matter (uneaten food and fish faeces) ... -
Numerical modelling of the sub-surface melting of marine-terminating glaciers in Arctic fjords
(Master thesis, 2015-06-01)Submarine melting of glaciers terminating in fjords is likely to be of high importance regarding the total ice loss from ice sheets and ice caps and the resulting addition of freshwater to the ocean. Submarine melting ... -
Numerical prediction of erosion in a choke valve
(Master thesis, 2019-06-25)Erosion wear in pipelines due to multiphase flows is a well-known problem in the petroleum production and transport industries. There are several different ways to predict the erosion damage on the system investigated. ... -
Numerical sensitivity studies on the variability of climate-relevant processes in the Barents Sea
(Peer reviewed; Journal article, 2005-06-03)The Barents Sea is a key region in the North Atlantic/Arctic Ocean climate system because of the intense ocean-atmosphere heat exchange and the formation of sea ice. The latter process is connected with salt input, so-called ...