Blar i Fakultet for ingeniørvitenskap (IV) på tittel
Viser treff 20166-20185 av 23131
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Surface structure and wetting characteristics of Collembola cuticles
(Journal article; Peer reviewed, 2014)The cuticles of the arthropods Collembola (springtails) are known to be superhydrophobic, displaying such properties as water-repellence and plastron formation; overhanging surface structures have been suggested as the ... -
Surface volume control through continuous surveillance of drilling data
(Master thesis, 2017)When a new well is being drilled, volume control should be among the most important focus areas for the drilling crew. In every drilling operation, pressures exerted from the formations need to be controlled and overbalance ... -
Surface water waves on depth dependent flows
(Doctoral theses at NTNU;2017:194, Doctoral thesis, 2017)The present thesis provides essential insights into surface water waves propagating atop a horizontal current whose magnitude and direction may vary arbitrarily with water depth. A comprehensive theory in this regard is ... -
Surface wavepackets subject to an abrupt depth change. Part 1. Second-order theory
(Peer reviewed; Journal article, 2021)This paper develops second-order theory for narrow-banded surface gravity wavepackets experiencing a sudden depth transition based on a Stokes and multiple-scales expansion. As a wavepacket travels over a sudden depth ... -
Surface wavepackets subject to an abrupt depth change. Part 2. Experimental analysis
(Peer reviewed; Journal article, 2021)Surface gravity wavepackets in intermediate water depth experiencing an abrupt depth decrease are investigated experimentally. The experiments provide validation for the second-order (in steepness) theory for narrow-banded ... -
Surface Waves Generated by a Translating and Oscillating Source Atop Realistic Shear Flows
(Chapter, 2018)We analyze surface waves generated by a translating, oscillating surface disturbance atop a horizontal background flow of arbitrary depth dependence, with a focus on determining the Doppler resonance. For a critical value ... -
Surface waves modified by subsurface shear currents
(Doctoral theses at NTNU;2019:389, Doctoral thesis, 2019)This thesis presents work studying water waves propagating atop background shear currents. A growing body of research, to which this thesis contributes, indicates that accounting for the effects of shear currents are ... -
Surface Wrinkling with Memory for Programming Adhesion and Wettability
(Peer reviewed; Journal article, 2023)Modulating surface wrinkling is important for a variety of engineering applications. It has been known for more than two decades that the wavelength of surface wrinkles occurring in a metal film–soft polymer system scales ... -
Surface-Charge Alteration at the Carbonate/Brine Interface During Single-Well Chemical-Tracer Tests: Surface-Complexation Model
(Journal article; Peer reviewed, 2018)Water chemistry has been shown to affect oil recovery by affecting surface charge and rock dissolution. The single-well chemical-tracer (SWCT) test is a field method to measure residual oil saturation (Sor), in which ... -
Surfacing Tool for Valve Pockets
(Master thesis, 2010)The objective of this master's thesis was to develop a surfacing tool for valve pocket seal surfaces found in subsea valve trees. The work was initiated by Aker Subsea. Metal-to-metal seals are used in the valves to prevent ... -
Surfactant Enhanced Oil Recovery in Fractured Reservoirs: Simulation study of surfactant spontaneous and dynamic imbibition
(Doctoral theses at NTNU;2019:387, Doctoral thesis, 2019)Water flooding has poor performance in fractured reservoirs with mixed- or oil-wet wettability. Surfactant could be used to improve oil recovery by changing wettability to more water-wet or reducing water/oil interfacial ... -
A Surfactant for Enhanced Heavy Oil Recovery in Carbonate Reservoirs in High-Salinity and High-Temperature Conditions
(Peer reviewed; Journal article, 2020)In view of the difficulty of producing heavy oil from carbonate reservoirs, the surfactant SDY-1 was synthesized by homogeneous solution polymerization with a homogeneous solution polymerization technique using aliphatic ... -
Surge and Swab Pressure Calculation: Calculation of Surge and Swab Pressure Changes in Laminar and Turbulent Flow While Circulating Mud and Pumping
(Master thesis, 2014)Pressure changes due to Surge and Swabs has in many years been a big concern in the industry. If the pressure changes become too high, the formation can fracture, and formation influx can lead to a kick. In worst case ... -
Surge and Swab Simulations
(Master thesis, 2019)Det er nye tider i energisektoren og det er stort fokus på optimal olje- og gassutvinning. Samtidig som verden ønsker å bevege seg i en miljøvennligretning mot mindre utslipp, er vi i stor grad fremdeles avhengige av olje ... -
Surge Mitigation for Pumped Storage Hydropower
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Surge Tank Atlas for Hydropower Plants
(Master thesis, 2016)The objective of this master's thesis is to describe the existing surge tank solutions and additional improvements, and to simulate the hydraulic behavior of the surge tanks and how it affects the hydropower plant. The ... -
Surge Tank Atlas for Hydropower Plants
(Master thesis, 2016)The objective of this master's thesis is to describe the existing surge tank solutions and additional improvements, and to simulate the hydraulic behavior of the surge tanks and how it affects the hydropower plant. The ... -
Surge Tank Research in Austria and Norway
(Journal article, 2015)Modern high-head hydropower plants, and especially pumped storage plants (PSP), are designed with increasing high water discharge and higher requirements to flexible operation. To improve the hydraulic performance and allow ... -
Surpassing the Limits to Human Cognition? On the Level of Detail in the Norwegian Building Design Guide
(Journal article, 2021)The SINTEF Building Research Design Guides are a series of Norwegian building technical recommendations. The design guides are highly reputed and widely used in the Norwegian construction sector, serving as a link between ... -
Surrogate Models for Integrated Reforming Combined Cycle Optimization: Surrogat-modeller til optimalisering av naturgassbaserte kraftverk med integrert reformering
(Master thesis, 2013)In the light of increasing concerns about climate change, greenhouse gas mitigation technologies have gained growing attention. Integrated Reforming Combined Cycle (IRCC) is one of the processes for reducing CO2 emissions ...