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Numerical Modelling and Sensitivity Analysis of Gas Kick Migration and Unloading of Riser
(Chapter, 2019)In deepwater wells there is a risk of gas entering the riser. This can be caused by gas being trapped by the BOP after a well kill operation, or it can be that the BOP was not closed quickly enough upon kick detection. ... -
Numerical modelling of a high temperature borehole thermal energy storage system: Norway case study
(Peer reviewed; Journal article, 2023)Global warming is threatening life on earth. Utilising renewable energy is considered as the most effective measure to minimise anthropogenic CO2 emissions. High-temperature borehole thermal energy storage (BTES) systems ... -
Numerical Modelling of Gas Production and CO2 Injection in Tight Shale Reservoirs for Enhanced Gas Recovery
(PhD thesis;560, Doctoral thesis, 2020-11)Natural gas production from shales has become exceedingly important in satisfying the ever-growing global energy demands. This unconventional hydrocarbon system is globally abundant, with large technically recoverable ... -
Numerical modelling of hydrodynamic responses of Ocean Farm 1 in waves and current and validation against model test measurements
(Peer reviewed; Journal article, 2021)With the continuous growing of the aquaculture industry and increasingly limited fish farming sites at close to shore areas both in Norway and worldwide, there is a need to develop fish farms suitable for aquaculture ... -
Numerical modelling of reverse circulation cementing with density unstable displacements in eccentric annulus
(Master thesis, 2021)This dissertation investigates the mechanics involved in reverse circulation cementing (RCC) with numerical modelling. Numerical simulations are done by utilising a computational fluid dynamics (CFD) software (OpenFOAM). ... -
Numerical Optimisation of a Classical Stochastic System for Targeted Energy Transfer
(Peer reviewed; Journal article, 2022)The paper studies stochastic dynamics of a two-degree-of-freedom system, where a primary linear system is connected to a nonlinear energy sink with cubic stiffness nonlinearity and viscous damping. While the primary mass ... -
Numerical Simulation and Customized DACM Based Design Optimization
(PhD thesis UiS;, Doctoral thesis, 2018)The diverse numerical modelling, analysis and simulation tools that have been developed and introduced to markets are intended to perform the virtual design and testing of products and systems without the construction of ... -
Numerical Simulation and Experimental Study of Reelwell’s Heavy over Light Solution in Vertical Well Sections
(Masteroppgave/UIS-TN-IPT/2016;, Master thesis, 2016-06)Reelwell has developed the Reelwell Drilling Method (RDM), including the Heavy Over Light (HOL) solution. The HOL solution allows drilling with simultaneously use of two different drilling fluids, i.e. a near static ... -
Numerical Simulation of Breaking Wave Loading on Standing Circular Cylinders with Different Transverse Inclined Angles
(Peer reviewed; Journal article, 2020)The purpose of this paper is to numerically simulate the breaking wave past a standing cylinder with different transverse inclined angles. The numerical simulations are carried out by solving the Unsteady Reynolds-Averaged ... -
Numerical simulation of chemical flow-zone isolation
(Masteroppgave/UIS-TN-IPT/2011;, Master thesis, 2011)Silicate gel has been mostly used for near well treatment. A field test in the Snorre reservoir on the Norwegian Continental Shelf (NCS) has been planned, where the object of the test is to technically qualify silicate gel ... -
Numerical simulation of co-current and counter-current imbibition
(Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-06-15)Spontaneous imbibition (SI) is a very important mechanism for oil recovery in naturally fractured reservoirs. Several studies have indicated that counter-current oil production is much slower and give lower ultimate oil ... -
Numerical simulation of FDM manufactured parts by adopting approaches in composite material simulation
(Peer reviewed; Journal article, 2019-11)Additive manufacturing (AM) process is a promising manufacturing method that can replace conventional manufacturing methods, particularly for parts with complex geometry. It is the process of joining materials layer by ... -
Numerical Simulation of Flow Around Subsea Covers at high Reynolds Numbers
(Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-06-15)The present study investigates turbulent flow over square and trapezoidal wall-mounted subsea covers in single and tandem configuration. The structures under investigation in the single configuration are subjected to a ... -
Numerical Simulation of Flow around Subsea Covers at High Reynolds Numbers
(Masteroppgave/UIS-TN-IKBM/2019;, Master thesis, 2020-01-15)Glass Reinforced Plastic (GRP) covers are widely used to protect the subsea equipment from external damage. In this work, numerical simulations of a fully developed turbulent boundary layer flow over square and trapezoidal ... -
Numerical simulation of flow around two 5:1 rectangular cylinders at a high Reynolds Number
(Peer reviewed; Journal article, 2019)The unsteady flows around two stationary rectangular cylinders with a chord-to-thickness ratio of B/D = 5 at ReD = 2 × 105 (based on the free stream velocity and the width length D), are investigated using two-dimensional ... -
Numerical simulation of flows in concentric and eccentric annulus – relevant to geothermal wells
(Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-07)At the end of 20th century, the utilization of geothermal energy has increased by 150% forming a solid industry of relevant importance on global markets (Dickson & Fanelli, 2004). According to numerous analyses, this type ... -
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 ...