Blar i Fakultet for ingeniørvitenskap (IV) på tittel
Viser treff 15062-15081 av 22885
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Numerical studies of viscous flow around straight and curved tandem cylinders
(Doctoral theses at NTNU;2024:81, Doctoral thesis, 2024)The physics of flow around straight and curved cylinders in tandem is investigated by means of direct numerical simulations (DNS), for transitional and turbulent flow regimes. For straight tandem cylinders in the reattachment ... -
Numerical studies on ductile failure of aluminium alloys
(Doctoral theses at NTNU;2017:284, Doctoral thesis, 2017)Numerical modelling and simulation are becoming increasingly important for structural design and assessment, and they are essential tools for engineers facing the challenges and demands imposed by the modern society. Using ... -
Numerical studies on the dynamic behavior of a superlong curved pontoon bridge under wind and wave actions
(Chapter, 2019)Floating bridges serve as attractive solutions where classical bridge concepts are not possible. However, compared to more commonly encountered bridge concepts such as cablesupported bridges, their dynamic behavior remains ... -
Numerical studies on wave forces and moored ship motions in intermediate and shallow water
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:238, Doctoral thesis, 2012)Wave forces and motions of a moored ship in intermediate and shallow water depth are investigated numerically in the present thesis. The studies are carried out in the framework of potential flow theory. Three numerical ... -
Numerical Study for a Catamaran Gripper-Monopile Mechanism of a Novel Offshore Wind Turbine Assembly Installation Procedure
(Chapter; Peer reviewed, 2017)Current methods for installation of offshore wind turbines are all sensitive to the weather conditions and the present cost level of offshore wind power is more than twice the cost of land-based units, increasing with water ... -
Numerical Study for Single Blade Installation of an Offshore Wind Turbine
(Master thesis, 2020)Markedet for havvind vokser samtidig som størrelsen på vindmøllene øker. Effektiviteten til en vindturbin påvirkes av turbinstørrelsen og stabile vindforhold. En følge av dette vil være flere installasjoner av vindmøller ... -
Numerical Study for Single Blade Installation of an Offshore Wind Turbine
(Master thesis, 2020)Markedet for havvind vokser samtidig som størrelsen på vindmøllene øker. Effektiviteten til en vindturbin påvirkes av turbinstørrelsen og stabile vindforhold. En følge av dette vil være flere installasjoner av vindmøller ... -
Numerical study of a Francis turbine over wide operating range: Some practical aspects of verification
(Peer reviewed; Journal article, 2020)Hydropower plays an essential role in maintaining energy flexibility. Modern designs focus on sustainability and robustness using different numerical tools. Automatic optimization of the turbines is widely used, including ... -
Numerical study of a novel procedure for installing the tower and Rotor Nacelle Assembly of offshore wind turbines based on the inverted pendulum principle
(Journal article; Peer reviewed, 2017)Current installation costs of offshore wind turbines (OWTs) are high and profit margins in the offshore wind energy sector are low, it is thus necessary to develop installation methods that are more efficient and practical. ... -
A numerical study of a size-dependent finite-element based unit cell with primary and secondary voids
(Peer reviewed; Journal article, 2021)Aluminium alloys contain various types of intermetallic particles with different sizes, such as constituent particles and dispersoids. The main mechanism of ductile fracture in these materials is assumed to be nucleation ... -
Numerical study of a well boat operating at a fish farm in current
(Journal article; Peer reviewed, 2019)Dynamic response of a well boat operating at a fish farm in current is investigated numerically. An objective is to determine the operational conditions of the well boat. In terms of the fish farm, a realistic set-up (with ... -
Numerical study of a well boat operating at a fish farm in long-crested irregular waves and current
(Journal article; Peer reviewed, 2019)The dynamic response of a coupled well boat–fish farm system in irregular long-crested waves and current is analyzed numerically in the time domain. The main purpose is to investigate the influence of the well boat on the ... -
Numerical Study of Air Flow in Air Cavities for Pitched Wooden Roofs
(Master thesis, 2020)I Norge sees ofte eneboliger og andre typer småhus med skrå tretak. Luftede skrå tretak med et lufthulrom under takets tekning er av betydning for å sikre tørre forhold for takkonstruksjonen og samtidig holde lav temperatur ... -
Numerical study of bilge-keel effect on parametric roll and water on deck for an FPSO
(Chapter; Peer reviewed, 2015)This research activity represents the logical continuation of the work documented in [1] and [2] on water on deck and parametric roll for an FPSO in regular waves. Here the same numerical method, based on a domain-decomposition ... -
Numerical study of closed rigid fish cages in waves and comparison with experimental data
(Journal article; Peer reviewed, 2021)Closed fish cages have gained increased interest in marine aquaculture. However, knowledge on the seakeeping behaviour of a floating closed cage and the influence of the contained water inside the cage are still limited. ... -
Numerical study of curved-mesh tailoring of free-surface shear profile
(Master thesis, 2019)Krummede nettinger blir ofte brukt til å endre hastighetsprofilet i testområdet i eksperimentelle anlegg. De eksisterende uttrykkene som kan brukes til å bestemme formen på nettingen, gitt strømningsforholdene opp- og ... -
Numerical study of discharge adjustment effects on reservoir morphodynamics and flushing efficiency: An outlook for the unazuki reservoir, Japan
(Journal article; Peer reviewed, 2021) -
Numerical study of ductile failure under non-proportional loading
(Journal article; Peer reviewed, 2019)This paper investigates two numerical methods for predicting the initiation of ductile failure under moderately and strongly non-proportional loading paths. Two distinct phenomena are considered as indicators for the ... -
Numerical study of fillet welds subjected to quasi-static and impact loading
(Journal article; Peer reviewed, 2017)Fillet welding is widely used in connections in civil engineering and marine structures. Thus, understanding the behavior of fillet welds under various types of loading is important, and numerical simulations can provide ... -
Numerical study of flow calming structures in hydropower plants
(Master thesis, 2021)For å forlenge livsløpet til hydrauliske turbiner er det nødvendig å minimere skader forårsaket av sedimentslitasje. En mulig løsning er å forbedre sandfanget for å redusere mengden sedimenter som når turbinene. I dette ...