Browsing UiS Brage by Title
Now showing items 2756-2775 of 18581
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A compressible viscous three-phase model for porous media flow based on the theory of mixtures
(Peer reviewed; Journal article, 2020)In this paper we focus on a general model to describe compressible and immiscible three-phase flow in porous media. The underlying idea is to replace Darcy’s law by more general momentum balance equations. In particular, ... -
Computation of the relationship between interfacial area, capillary pressure and saturation in porous media based on the level set method
(Masteroppgave/UIS-TN-IPT/2012;, Master thesis, 2012)To gain a better understanding of the relationship between capillary pressure, water saturation and interfacial area in two phase flow, we have studied the drainage and imbibition process for an oil-water system. A level ... -
Computational evaluation of different arrangements for the circadian clock in Arabidopsis thaliana.
(Masteroppgave/UIS-TN-IKBM/2019;, Master thesis, 2019-08)The circadian clock is an endogenous timekeeper that enables individuals to predict and adjust to their environment's regular differences between light and dark and high and low temperatures. This biological timing mechanism ... -
Computational Fluid Dynamics (CFD) Investigations of flow past subsea cover
(Master thesis, 2021)Glass reinforced plastic (GRP) subsea protection covers are often used to protect offshore pipelines, umbilicals and other important subsea structures from dropped objects released from offshore oil and gas and fishing ... -
Computational Fluid Dynamics (CFD) Investigations of Flow-Induced Vibrations of Two Rigidly Coupled Cylinders at High Reynolds Number
(Masteroppgave/UIS-TN-IMBM/2020;, Master thesis, 2020)Two degree-of-freedom (2-DoF) flow-induced vibrations (FIV) of a single cylinder and two rigidly coupled cylinders are numerically investigated at the Reynolds number of 3.6 × 10^6. Two-dimensional (2D) Unsteady ... -
Computational Fluid Dynamics (CFD) simulation of two-dimensional(2D) cross sectional flow around twin-box girder bridge
(Masteroppgave/UIS-TN-IKM/2017;, Master thesis, 2017-06-15)Flow around a twin-box bridge with a fixed spacing between the decks has been investigated using the two dimensional (2D) Unsteady Reynolds-Averaged Navier–Stokes (URANS) equations with the k–ω Shear Stress Transport (SST) ... -
Computational Fluid Dynamics (CFD) study to optimize simulated pressure drop across liner hangers: A field trail approach to improve well integrity by optimizing ECD simulations during well cementing.
(Masteroppgave/UIS-TN-ISØP/2020;, Master thesis, 2020-06-15)Optimizing cementing parameters during the cement job is a challenging task. Accurate pre-job analysis is essential to elude breakdown of the formation to obtain a successful cement job. If the equivalent circulation density ... -
Computational fluid dynamics simulation of buoyant mixing of miscible fluids in a tilted tube
(Peer reviewed; Journal article, 2021)Buoyancy-driven flows and mixing of fluids with different densities occur frequently both in nature and as part of industrial processes within chemical and petroleum engineering. This work investigates the buoyant exchange ... -
Computational fluid dynamics simulation of flying discs
(Master thesis, 2021)This manuscript is divided in two parts. First, a comprehensive review of flight dynamics and disc-wing aerodynamics literature is presented. It discusses the aerodynamic characteristics of circular planform wings and the ... -
Computational investigation of the aerodynamic performance of reversible airfoils for a bidirectional tidal turbine
(Peer reviewed; Journal article, 2021)A reversible airfoil is an airfoil that has equal performance when the flow is reversed. Such airfoils are relevant for many different applications, including use in ventilation fans, helicopter rotors, wind turbines and ... -
Computational Statistics and Data Analysis: Robustness of the Linear Mixed Effects Model to Non-normality of Longitudinal Data.
(Masteroppgave/UIS-TN-IMN/2016;, Master thesis, 2016-06)The Linear mixed effects model is based on one of the assumptions, which is that data are normally distributed as the errors and random effects in the model are assumed to have normal distributions; but in practice, ... -
Computer assisted history matching : A comprehensive study of methodology
(Masteroppgave/UIS-TN-IPT/2013;, Master thesis, 2013-06-17)History matching is an important step in reservoir simulation study. The objective is to validate a reservoir model before it is used for prediction. In conventional way, people do history matching by manually adjusting ... -
Computer tomographic assessment of gastric volume in major trauma patients:impact of pre-hospital airway management on gastric air
(Peer reviewed; Journal article, 2020-07)Background Gastric dilation is frequently observed in trauma patients. However, little is known about average gastric volumes comprising food, fluids and air. Although literature suggests a relevant risk of gastric ... -
Computer Vision in Wind Turbine Blade Inspections: An Analysis of Resolution Impact on Detection and Classification of Leading-Edge Erosion
(Master thesis, 2023)Wind turbines, as critical components of the renewable energy industry, present unique maintenance challenges, particularly in remote or challenging locations such as offshore wind farms. These are amplified in the inspection ... -
Concave Drilling Curve
(Journal article; Peer reviewed, 2013)Drilling expenses have increased sharply in recent years. Average meters drilled per day significantly influences exploration costs. Hence it is important to understand the factors that determine this drilling metric. In ... -
Concentric cylinder viscometer flows of Herschel-Bulkley fluids
(Peer reviewed; Journal article, 2019)Drilling fluids and well cements are example non-Newtonian fluids that are used for geothermal and petroleum well construction. Measurement of the non-Newtonian fluid viscosities are normally performed using a concentric ... -
Concept design of self-contained remotely controlled running tool
(Masteroppgave/UIS-TN-IKM/2009;, Master thesis, 2011) -
Concept design of self-contained remotely controlled running tool
(Masteroppgave/UIS-TN-IKM/2009;, Master thesis, 2011) -
Concept Evaluation and Analysis of Soft-Landing System for subsea modules
(Master thesis, 2021)The offshore installation is a large process that will face several obstacles, including unpredictable ocean conditions. During the landing stage, the installation platform restricts the movement of the equipment. Furthermore, ... -
Concept evaluation of tethered station keeping system for a mono-hull floating offshore vertical axis wind turbine
(Masteroppgave/UIS-TN-IKM/2016;, Master thesis, 2016-06-14)The objective of this thesis is to perform a concept evaluation of novel station keeping concept for offshore vertical axis wind turbines based on the well-known tension leg platform (TLP) principle. The main characteristic ...