Blar i Fakultet for ingeniørvitenskap (IV) på tittel
Viser treff 12931-12950 av 22889
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Low-frequency acoustic signal created by rising air-gun bubble
(Journal article; Peer reviewed, 2017)In the seismic industry, there is increasing interest in generating and recording low frequencies, which leads to better data quality and can be important for full-waveform inversion. The air gun is a seismic source with ... -
Low-frequency dynamic wake meandering: comparison of FAST.Farm and DIWA software tools
(Journal article; Peer reviewed, 2021)Most of the global dynamic response models used today for the design of wind turbines are based on the aero-hydro-servo-elastic analysis of one single turbine. However, research on bottom- fixed offshore wind turbines has ... -
Low-Frequency Hydrodynamic Modeling of a 12 MW Semi-Submersible Wind Turbine
(Master thesis, 2021)INO WINDMOOR-plattformen er en semi-submersible konstruksjon for å støtte en 12 MW vindturbin. Dens naturlige frekvenser i bølge og tonehøyde er under frekvensene til typisk bølgeenergi, og store resonansbevegelser kan ... -
Low-frequency oscillations in flow past an inclined prolate spheroid
(Journal article; Peer reviewed, 2019)We analyse the forces on a 45∘ inclined 6:1 prolate spheroid at Reynolds number ReD = 8000. In contrast to flow at lower Reynolds numbers previously investigated, we now find a strong oscillatory behaviour in the global ... -
Low-head pumped hydro storage: A review of applicable technologies for design, grid integration, control and modelling
(Peer reviewed; Journal article, 2022)To counteract a potential reduction in grid stability caused by a rapidly growing share of intermittent renewable energy sources within our electrical grids, large scale deployment of energy storage will become indispensable. ... -
Low-Height Lifting System for Offshore Wind Turbine Installation: Modelling and Hydrodynamic Response Analysis Using the Commercial Simulation Tool SIMA
(Chapter; Peer reviewed, 2020)With the increasing demand for renewable energy sources in the past years, the interest in expanding the use of wind energy has grown. The next frontier in this expansion process is the use of floating wind turbines offshore. ... -
Low-parameter linear model to activate the flexibility of the building thermal mass in energy system optimization
(Peer reviewed; Journal article, 2023)As buildings are becoming an integrated part of the energy system, the potential activation of the thermal mass as a source of flexibility needs to be considered in energy system modeling. Since energy system models represent ... -
Low-temperature fatigue life properties of Aluminum butt weldments by the means of the local strain energy density approach
(Journal article; Peer reviewed, 2019)The paper investigates the use of the strain energy density evaluated on a finite control volume as a mean to the fatigue life prediction for double V‐groove but joints. The specimens are manufactured by metal active gas ... -
Low-velocity impact behaviour and failure of stiffened steel plates
(Journal article; Peer reviewed, 2017)The behaviour and failure of stiffened steel plates subjected to transverse loading by an indenter is studied in this paper. Low-velocity dynamic and quasi-static tests of stiffened plates with geometry adopted from a ... -
Low-velocity impact on high-strength steel sheets: An experimental and numerical study
(Journal article; Peer reviewed, 2016)Low-velocity impact tests were performed on dual-phase and martensitic steel sheets and compared with corresponding quasi-static tests. The geometry and loading condition of the specimens were similar to formability tests, ... -
Low-velocity impact on multi-layered dual-phase steel plates
(Journal article; Peer reviewed, 2015)In this paper an experimental program investigating the behavior of monolithic and multi-layered configurations of 0.8 mm and 1.8 mm medium-strength steel plates is presented. We have considered impacts by blunt-ended and ... -
Low-Velocity Penetration of Aluminium Plates
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:46, Doctoral thesis, 2008)The present thesis describes research on quasi-static and low velocity perforation of rolled aluminium plates, where the main objective has been to gain a better knowledge of the physical processes taking place during this ... -
Lowering and lifting operations through moonpools: Hydrodynamic investigations
(Master thesis, 2014)On construction vessels subsea modules, diving bells, cables and so on are often lifted through a moonpool. The advantage of using a moonpool is that the surface elevation inside the moonpool is shielded against the outside ... -
Lowering operation of a subsea module using air filled suction anchors to reduce the crane load capacity required.
(Master thesis, 2010)The Ormen Lange gas field is located 120 km west-north west of Kristiansund, and went in to production in October 2007. The field is planned to be developed throughout 2015 including the installation of a subsea compression ... -
LPG-fremdrift
(Bachelor thesis, 2020)Denne oppgaven er skrevet i forbindelse med praksis i BW LPG. Oppgaven dreier seg om kostnadene og lønnsomheten rundt ombyggingen av fremdriftsmotoren til et gass-skip av typen VLGC. BW LPG bygger i disse tider om 12 av ... -
LTE Uplink Transmission Scheme
(Research report, 2014)The Long Term Evolution (LTE) standard requires an uplink transmission rate of up to 86 Mbps. In order to support such a high data rate and avoid the high Peak-to-Average Power Ratio (PAPR) disadvantage in Orthogonal-FDMA, ... -
Lubrication Oil Flow Simulation in Connecting Rod
(Master thesis, 2015)Lubrication oil-flow in the crank system of an medium size diesel engine running at 750 RPM was modeled and analyzed. The model was built up by combining models from several studies in both engine lubrication systems and ... -
Luftbåren oppvarming med konstante volumsystem (CAV) i passivhus
(Master thesis, 2020)Denne oppgaven undersøker luftbåren oppvarming med konstante volumsystem (CAV) i passivhus. Slike bygg kjennetegnes ved god isolasjonsevne og høy lufttetthet. Varmetilskudd fra sol og internlast kan derfor benyttes til å ... -
Luftede kledninger. Anbefalinger for klimatilpasning
(Klima 2050 Report;, Research report, 2021) -
Lufting av skrå tretak - Trykktap ved ulike luftespalteutforminger
(Master thesis, 2018)Denne rapporten bygger videre på en masteroppgave utført av Espen Hansen våren 2016, med tittelen Luftstrømning i skrå tretak. Espens oppgave tar blant annet for seg trykktap i tilknytning til raftekasser, valg av steinlekter, ...