Blar i Fakultet for ingeniørvitenskap (IV) på tittel
Viser treff 15237-15256 av 22924
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Oblique Loading of Aluminium Crash Components
(Dr. ingeniøravhandling; 2003:15, Doctoral thesis, 2003)The structural behavior of thin-walled aluminum extrusions, with and without aluminum foam filler, subjected to oblique loading was studied through experiments and numerical analyses. Extrusions similar to the ones tested ... -
Oblique waves on a vertically sheared current are rotational
(Journal article; Peer reviewed, 2016)In the study of surface waves in the presence of a shear current, a useful and much studied model is that in which the shear flow has constant vorticity. Recently it was shown by Constantin (2011) that a flow of constant ... -
Observasjons-ROV til Kystverket.
(Bachelor thesis, 2016)Hensikten med denne oppgaven er å utvikle et konsept til en kompakt og bærbar observasjons-ROV som kan bistå Kystverket med å inspisere sjømerker. ROV-en skal være lett å manøvrere, slik at inspeksjon og dokumentasjon kan ... -
Observation of surface wave patterns modified by sub-surface shear currents
(Journal article; Peer reviewed, 2019)We report experimental observations of two canonical surface wave patterns – ship waves and ring waves – skewed by sub-surface shear, thus confirming effects predicted by recent theory. Observed ring waves on a still surface ... -
Observations and Numerical Simulation of Icebergs in Broken Ice
(Doctoral theses at NTNU;2017:24, Doctoral thesis, 2017)Sea ice and icebergs are the major challenges for offshore activities in the Arctic. Design loads for Arctic offshore structures may be significantly reduced if the drift of sea ice and icebergs is possible to forecast ... -
Observations from hydrodynamic testing of a flexible, large-diameter monopile in irregular waves
(Peer reviewed; Journal article, 2020)As the offshore wind industry moves toward larger wind turbines and deeper water, wave-induced loads on large-diameter monopiles are of increasing importance for ultimate limit state design checks. The combination of a ... -
Observations of preferential summer melt of Arctic sea-ice ridge keels from repeated multibeam sonar surveys
(Peer reviewed; Journal article, 2023)Sea-ice ridges constitute a large fraction of the total Arctic sea-ice area (up to 40 %–50 %); nevertheless, they are the least studied part of the ice pack. Here we investigate sea-ice melt rates using rare, repeated ... -
Observations of truck-bicycle encounters: A case study of conflicts and behaviour in Trondheim, Norway
(Journal article; Peer reviewed, 2019)Highlights Within 340 h of recordings, 979 encounters and 31 conflicts were detected. Behavioural analysis were conducted in conjunction with conflict analysis. Event-based approach to exposure was used to compare risk ... -
Observations of Turbulence at a Near-Surface Temperature Front in the Arctic Ocean
(Peer reviewed; Journal article, 2020)High‐resolution ocean temperature, salinity, current, and turbulence data were collected at an Arctic thermohaline front in the Nansen Basin. The front was close to the sea ice edge and separated the cold and fresh surface ... -
Observations on and use of curves of current dimensionless potential versus recovery factor calculated from models of hydrocarbon production systems in Journal of Petroleum Science and Engineering
(Peer reviewed; Journal article, 2021)In this work, curves of current dimensionless potential versus recovery factor are computed with models of hydrocarbon production systems. Additionally, a method to estimate production profiles using curves of current ... -
Observations on the Effects of Skill Transfer through Experience Sharing and In-Person Communication
(Journal article; Peer reviewed, 2019)An essential part of any space in which physical prototyping and prototype-driven product development is being conducted is the education of its users in the necessary skills to fully utilise the material resources of the ... -
Observed and Estimated Effects of Cuttings on Equivalent Circulating Density
(Master thesis, 2014)More extended reach wells, highly deviated and ultra deep are being drilled to meet the world s continuously increasing energy demand. Hole cleaning remains one of the greatest challenges throughout drilling operations, ... -
Observer design for underwater vehicles with position and angle measurement
(Journal article, 2006)In this paper we propose a new observer system for underwater vehicles. The main design objective behind this strategy is to reduce the destabilizing effect of the Coriolis and centripetal forces and moments in the observer. ... -
Obtaining approximations for range-based free-network adjustment
(Peer reviewed; Journal article, 2023)Abstract. Airborne and ground mobile mapping platforms are increasingly used in group formations to increase productivity or complement each other in terms of improving observation capacity and efficiency in the surveyed ... -
Obtaining Hyperspectral Signatures for Seafloor Massive Sulphide Exploration
(Journal article; Peer reviewed, 2019)Seafloor massive sulphide (SMS) deposits are hosts to a wide range of economic minerals, and may become an important resource in the future. The exploitation of these resources is associated with considerable expenses, and ... -
Obtaining the Source Wavefield from Multicomponent Data and its Application in Full Waveform Inversion
(Master thesis, 2015)In full waveform inversion (FWI) we need to know the seismic source signature. In practice this is generally unknown, and it must be estimated using statistical methods or inversion. However, these methods rely on assumptions ... -
OC5 Project Phase Ib: Validation of Hydrodynamic Loading on a Fixed, Flexible Cylinder for Offshore Wind Applications
(Journal article; Peer reviewed, 2016)This paper summarizes the findings from Phase Ib of the Offshore Code Comparison, Collaboration, Continued with Correlation (OC5) project. OC5 is a project run under the International Energy Agency (IEA) Wind Research Task ... -
OC6 Phase Ib: Validation of the CFD predictions of difference-frequency wave excitation on a FOWT semisubmersible
(Peer reviewed; Journal article, 2021)During the previous OC511 project, state-of-the-art mid-fidelity engineering tools for floating wind systems were found to consistently underpredict the nonlinear, low-frequency responses of semisubmersible offshore wind ... -
OC6 Phase II: Integration and verification of a new soil–structure interaction model for offshore wind design
(Peer reviewed; Journal article, 2021)This paper provides a summary of the work done within the OC6 Phase II project, which was focused on the implementation and verification of an advanced soil–structure interaction model for offshore wind system design and ... -
Occupancy and occupants’ actions
(Chapter, 2018)Occupants’ presence and actions within the built environment are crucial aspects related to understanding variations in energy use. Within this chapter, first, a nomenclature for the field of research dealing with occupants ...