Browsing NTNU Open by Title
Now showing items 94277-94296 of 101886
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Transient Stability in Subsea PMSM with Damper Windings - Using Finite Element Method Simulations to Identify the dq-circuit Parameters of a PMSM with a Damper Winding Sleeve
(Master thesis, 2016)Today, induction machines dominate the market for electrical machines in industrial pumping applications. This is also the case for subsea pumping applications. Permanent magnet machines are showing great promise for taking ... -
Transient system-level performance and thermo-mechanical stress analysis of a solid oxide fuel cell-based power generation plant with a multi-physics approach
(Journal article; Peer reviewed, 2020)A solid oxide fuel cell-based (SOFC) power generation plant is analyzed with a view to performance as well as thermo-mechanical stresses. Emphasis is given to design and operation constraints of individual components as ... -
Transient temperature estimations to facilitate dynamic current rating of power cables
(Master thesis, 2020)I dag er den maksimale strømbelastningen for en strømkabel vanligvis ikke fult utnyttet. Den økende etterspørselen for elektrisk energi fører til et ønske om en mer effektiv bruk av den ubrukte kapasiteten i dagens strømnett. ... -
Transient Temperatures of Underground XLPE Power Cables - Comparison of Results from Different Calculation Methods and Full-Scale Experiment
(Master thesis, 2018)By gaining an better understanding of the limiting thermal mechanisms of the various power system components, work can be performed to increase the grid transfer capability. Of these components the underground power cable ... -
Transient Thermo-Acoustic Responses of Methane/Hydrogen Flames in a Pressurized Annular Combustor
(Peer reviewed; Journal article, 2022)The present article experimentally investigates the triggering and transient growth of azimuthal instabilities in a pressurized laboratory-scale annular combustor featuring 12 methane/hydrogen flames, as the equivalence ... -
Transient wave resistance upon a real shear current
(Journal article; Peer reviewed, 2018)We study the waves and wave-making forces acting on ships travelling on currents which vary as a function of depth. Our concern is realism; we consider a real current profile from the Columbia River, and model ships with ... -
Transientanalyse av 22 kV feil i nett med transformatorer uten HS- sikringer
(Bachelor thesis, 2023)Distribusjonstransformatoren er en viktig komponent i kraftnettet. Skader og havari på den medfører store kostnader med tanke på utstyr, utrykning og nedetid for kunder. Røros E-verk har hatt problemer med transformatorhavari ... -
Transiente olje-vann strømningsforsøk
(Master thesis, 2009)Denne masteoppgaven er i all hovedsak rettet mot å ekstrahere eksperimentelle data på olje-vann flushing, begge i væskefase. Det vil også gjøres en evaluering på hvor godt flerfasesimulatoren OLGA 6.0 klarer å reprodusere ... -
Transients During Energization of Unloaded Generator Step-Up Transformers
(Master thesis, 2019)En standard vannkraftstasjon i det norske kraftsystemet består av generator og transformator installert i fjellanlegg. Fra transformatoren går det kabler til et utendørs koblingsanlegg med effektbryter, samleskinne og ... -
Transing/Queering (and) Harry Potter: Gender Minority Interpretations and Experiences of the Harry Potter Septet, Harry Potter Fan Fiction, and the Harry Potter Fandom
(Doctoral theses at NTNU;2021:159, Doctoral thesis, 2021)Summary This dissertation concerns how young gender minority (e.g., trans, genderqueer, genderfluid, intersex) readers of the Harry Potter series, in particular, use digital fan communities as spaces of affiliation, ... -
TRANSIT-TIME FLOWMETRY AND WALL SHEAR STRESSANALYSIS OF CORONARY ARTERY BYPASS GRAFTS: – A clinical and experimental study
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:249, Doctoral thesis, 2010) -
Transition between canted antiferromagnetic and spin-polarized ferromagnetic quantum Hall states in graphene on a ferrimagnetic insulator
(Peer reviewed; Journal article, 2020)In the quantum Hall regime of graphene, antiferromagnetic and spin-polarized ferromagnetic states at the zeroth Landau level compete, leading to a canted antiferromagnetic state depending on the direction and magnitude of ... -
Transition between coalescence and bouncing of droplets on a deep liquid pool
(Journal article; Peer reviewed, 2011)This study focused on the bouncing of sub-millimetric droplets (below 0.7 mm) of three different fluids, distilled water, technical ethanol and 1-propanol on a deep liquid pool of the same fluids. Four different flow regimes ... -
Transition from Galactic to Extragalactic Cosmic Rays
(Journal article; Peer reviewed, 2019)The question at which energy the transition from Galactic to extragalactic cosmic rays takes place has been a long-standing conundrum in cosmic ray physics. In the past, the transition energy has been usually associated ... -
Transition from glass- to gel-like states in clay at a liquid interface
(Journal article; Peer reviewed, 2016)Colloidal clay in water suspensions are known to exhibit a multitude of bulk phases depending on initial colloidal concentration and ionic strength, and examples of this include repulsive Wigner colloidal glasses at low ... -
Transition from viscous fingers to foam during drainage in heterogeneous porous media
(Peer reviewed; Journal article, 2023)We investigate the behavior of drainage displacements in heterogeneous porous media finding a transition from viscous fingering to foam-like region. A pore network model incorporating the formation of blobs is adopted to ... -
Transition into and out of daylight saving time and spontaneous delivery: a population-based study
(Peer reviewed; Journal article, 2016)Objective To investigate whether the circadian rhythm disruption following the transition into and out of daylight saving time (DST) is associated with an increased risk of spontaneous delivery. Design We compared the ... -
Transition metal catalyzed cyclotrimerization to new pyridine ligands for asymmetric hydrogenation
(Master thesis, 2013)AbstractNew fused pyridine ring systems for the application as ligands in iridium catalyzed asymmetric hydrogenation have been synthesized with cyclotrimerization as a key step. This proved to be a efficient method for ... -
Transition Metal-Carbon Bond Enthalpies as Descriptor for the Electrochemical Stability of Transition Metal Carbides in Electrocatalytic Applications
(Journal article; Peer reviewed, 2020)Transition metal carbides are used for various applications such as hard coating, heterogeneous catalysis, catalyst support material or coatings in fuel cell applications. However, little is known about the stability of ... -
The transition of care from farm-based daycare for people with dementia: The perspective of next of kin
(Peer reviewed; Journal article, 2023)Purpose The aim of the present study was to explore the next of kin’s experiences with the transition for people with dementia from a farm-based daycare (FDC) to another service in the municipality. Methods The study ...