Browsing Faculty of Science and Technology by Title
Now showing items 4473-4492 of 7045
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Numerical simulation of ice sheet – FPSO interaction
(Masteroppgave/UIS-TN-IKM/2013;, Master thesis, 2013-06)The present thesis is devoted to investigation of FPSO interaction with level ice. The interaction with level ice is only addressed, disregarding other ice features. The scope of the thesis focuses upon two major problems: ... -
Numerical Simulation of Industrial Ultrasonic Testing of Material
(Masteroppgave/UIS-TN-IMBM/2020;, Master thesis, 2020-06-29)In this thesis, numerical simulation of ultrasonic testing is developed by modeling three different materials including Perspex, water, and steel in each model. Procedures of calibration of An angle probe including timebase ... -
Numerical simulation of oxygen transport in land-based aquaculture tank
(Peer reviewed; Journal article, 2021-10)Dissolved oxygen is an important indicator of the water quality and important for fish survival in aquaculture. The distribution of the dissolved oxygen is highly dependent on the flow motions, the pressure and the temperature ... -
Numerical simulation of piggyback pipelaying under current loadings
(Peer reviewed; Journal article, 2023)For piggyback pipelaying operations, current-induced force and its effect on the piggyback pipe have not been thoroughly studied. In the present study, an improved method in hydrodynamic load calculation and structural ... -
Numerical simulation of productivity effects by hydraulic fracturing in a low permeability fluvial reservoir in the north sea
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)A simulation study was performed on a recently discovered oil field. The operator is Talisman Energy, and the reservoir is complex in terms of disconnected fluvial channels, surrounded by a large majority of shale. The ... -
Numerical simulation of Spontaneous Imbibition of Smart Water into Preferentially oil-wet Carbonate using ECLIPSE 100
(Masteroppgave/UIS-TN-IPT/2016;, Master thesis, 2016-06)Spontaneous imbibition (SI) is the main recovery mechanism in low matrix perme- ability, naturally fractured reservoirs. However, for imbibition to occur, the reservoir rock should be preferentially water-wet. Several ... -
Numerical simulation of surfactant flooding in mixed wet reservoirs
(Masteroppgave/UIS-TN-IPT/2010;, Master thesis, 2010)Surfactants have been considered for enhanced oil recovery either by reduction of oil–water interfacial tension (IFT) or through wettability alteration. This study reveals the effect that reduced interfacial tension has ... -
Numerical simulation of temperature-dependent flow dynamics in drilling operations
(Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-15)This thesis is a description of the research and improvements on solving hyperbolic conservation laws by defining a hybrid explicit/implicit numerical scheme. Former researches have been done by (Evje and Flåtten 2005) on ... -
Numerical simulation of underexpanded air jet using OpenFOAM
(Masteroppgave/UIS-TN-IØRP/2015;, Master thesis, 2015-06-15)It is of utmost importance for the awareness of safety issues involved in high pressure gas storage to perceive the adjacent field of high pressure gas jet release for the establishment of the decomposition laws in the far ... -
Numerical Simulation of VIV of Risers with Staggered Buoyancy Elements
(Masteroppgave/UIS-TN-IKM/2016;, Master thesis, 2016-06-15)Steel Lazy Wave Riser (SLWR) is an attractive deep water riser system design, which allows the platform motion to be decoupled from the touchdown point (TDP) of the riser. When subjected to external flow, both buoyancy ... -
Numerical simulation-based effect characterization and design Optimization of micro cross-flow turbine
(Peer reviewed; Journal article, 2019)In this era of high power demand along with a need for sustainability, small and micro-scale hydro turbines are indispensable, especially for off-grid power generation. These hydro-turbines are more appealing, particularly ... -
Numerical simulations of flow around two tandem wall-mounted structures at high Reynolds numbers
(Peer reviewed; Journal article, 2020)In the present study, the flow around two-dimensional (2D) square and trapezoidal wall- mounted structures in tandem on a horizontal flat wall has been simulated using two-dimensional Reynolds-averaged Navier-Stokes (RANS) ... -
Numerical Simulations of Flow Over Bottom-Mounted Structures at High Reynolds Number
(Masteroppgave/UIS-TN-IMBM/2020;, Master thesis, 2019-06)A common challenge in on-bottom stability design is to select accurate hydrodynamic quantities, such as drag and lift coefficients, to compute the forces on structures subject to fluid flow. The objective of the present ... -
Numerical simulations of flow-induced vibrations of two rigidly coupled cylinders with uneven diameters in the upper transition Reynolds number regime
(Peer reviewed; Journal article, 2021)Two degree-of-freedom (2-DoF) flow-induced vibrations (FIV) of two rigidly coupled cylinders are numerically investigated at the Reynolds number of 3.6 × 106. Two- dimensional (2D) Unsteady Reynolds-Averaged Navier–Stokes ... -
Numerical simulations of gas-liquid two-phase flow induced forces on 90-degere elbow structures
(Master thesis, 2023)90-degree elbow structures such as pipelines with bends and rigid jumpers, are commonly used for flow transportation in subsea systems. The produced flow from the subsea wells is normally a multiphase flow which is a mixture ... -
Numerical Simulations of Near-Wall Vortex-Induced Vibrations of two Circular Cylinders in Tandem
(Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-06-15)Free-spanning subsea pipelines may experience vortex-induced vibrations (VIV) when exposed to fluid flow. These resonant motions can cause fatigue-related problems and in some cases failure of the pipe. A common configuration ... -
Numerical simulations of the sliding impact between an ice floe and a ship hull structure in ABAQUS
(Peer reviewed; Journal article, 2022)This paper studies the hull structural responses of a steel grillage subjected to sliding ice loads, which have been rarely investigated in the literature. Sliding ice loads are modelled using nonlinear finite element ... -
Numerical Simulations of Turbulent Flow through Piping Systems
(Master thesis, 2022)Piping systems have a wide range of applications across many different industries. Pipelines are essential infrastructure in the offshore oil & gas installations. One of the key challenges when operating complicated piping ... -
Numerical Stress Analysis of Tubular Joints
(Master thesis, 2021) -
Numerical stress analysis of tubular joints
(Peer reviewed; Journal article, 2021)The finite element analysis (FEA) presented in this paper pertains to the stress analysis of both the welded tubular T and X joints and is aimed to assess both the importance of the presence of the weld geometry and the ...