Blar i Fakultet for ingeniørvitenskap (IV) på tittel
Viser treff 22822-22841 av 23283
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Virvelavløsning på varmevekslerrør
(Master thesis, 2013)Strømningen bak de fremste rørene i en rørbuntvarmeveksler har blitt studert for å kunne si noe om virvelavløsningen. Bakgrunnen for studiet er opplevde problemer med vibrasjon og støy i en spesifikk varmeveksler utviklet ... -
Visco-elastic response of thermoplastics
(Master thesis, 2013)In this study a recently developed visco-elastic visco-plastic material model has been evaluated with the intention of improving the simulated behaviour of polymers. In order for polymers to become a more reliable construction ... -
Viscoelastic response of hydrogel materials at finite strains
(Master thesis, 2015)Hydrogel materials are very soft materials consisting of polymer networks and solvent molecules. The materials may exhibit large volume changes depending on its external chemical and mechanical environment and have ... -
Viscosity in modified gravity
(Journal article; Peer reviewed, 2012)A bulk viscosity is introduced in the formalism of modified gravity. It is shown that, based on a natural scaling law for the viscosity, a simple solution can be found for quantities such as the Hubble parameter and the ... -
Viscosity-Induced Crossing of the Phantom Barrier
(Journal article; Peer reviewed, 2015)We show explicitly, by using astrophysical data plus reasonable assumptions for the bulk viscosity in the cosmic fluid, how the magnitude of this viscosity may be high enough to drive the fluid from its position in the ... -
Viscosity-induced crossing of the phantom divide in the dark cosmic fluid
(Journal article; Peer reviewed, 2013-12-10)Choosing various natural forms for the equation-of-state parameter w and the bulk viscosity ζ, we discuss how it is possible for a dark energy fluid to slide from the quintessence region across the divide w = −1 into the ... -
Viscous Cosmology for Early- and Late-Time Universe
(Journal article; Peer reviewed, 2017)From a hydrodynamicist’s point of view the inclusion of viscosity concepts in the macroscopic theory of the cosmic fluid would appear most natural, as an ideal fluid is after all an abstraction (exluding special cases such ... -
Viscous coupled fluids in terms of a log-corrected equation-of-state
(Peer reviewed; Journal article, 2021)In this paper, we consider a class of cosmological fluids that possess properties analogous to those of crystalline solids undergoing isotropic deformations. Our research is based on a modified log-corrected power-law ... -
Viscous flow around a circular cylinder near a plane wall
(Master thesis, 2011)Marine pipelines placed at or near the seabed are exposed to currents and waves. In the presence of a sedimentary seabed, the interaction between the surrounding water motions and the pipeline may cause erosion of sediments ... -
Viscous flow around a simplified model of a Christmas tree
(Master thesis, 2016)In the petroleum industry, a Christmas tree is a structure consisting of valves and spools that sits atop an oil well. In order to better understand the forces acting on a Christmas tree during and after installation, ... -
Viscous Flow Around Finite Lenght Circular Cylinder
(Master thesis, 2012)Viscous flow around circular cylinders is a classical research topic in fluid dynamics with a vast amount of practical applications in the field of offshore marine technology. In the flow around cylinders of finite length, ... -
Viscous Flow Around Inclined Circular Cylinder
(Master thesis, 2017)Circular cylinder is of vital importance in the marine industry. The goal of this thesis is to study the physical phenomenon around the inclined circular cylinder as well as the forces acting on it. The study is mainly ... -
Viscous regularization for cohesive zone modelling under constant displacement: an application to hydrogen embrittlement simulation
(Journal article; Peer reviewed, 2016)The convergence problem during the cohesive zone modelling of hydrogen embrittlement in constant displacement scenario is attributed to the numerical instability which is studied analytically in the present work. The ... -
Visible-Light-Driven Photochromism of Hexagonal Sodium Tungsten Bronze Nanorods
(Journal article; Peer reviewed, 2013)Single-crystalline sodium tungsten bronze (Na-WO3) nanorods with typical diameters of 10–200 nm and lengths of several micrometers were prepared via hydrothermal synthesis. The as-prepared Na-WO3 nanorods crystallized in ... -
Vision Based Localization for Subsea Intervention
(Chapter; Peer reviewed, 2017)A vision based underwater localization system using fiducial markers is proposed. The system is implemented as a new control mode in a shared control system for ROVs and tested experimentally in a pool. A high accuracy ... -
Vision Based Robotic Control
(Master thesis, 2014)The main objective of this project was to create a visual system for object tracking, and implement this on the new robotic lab at the Department of Production and Quality Engineering.There are used two identical KUKA ... -
«Vision in Product design» as a method for universal design: «Vision in Product design» som metode for universell utforming
(Master thesis, 2014)The intention of this thesis is to identify and address the methodological challenges with Universal Design. Since Universal Design can be understood as both a design approach and a design philosophy, challenges in both ... -
Vision system for quality assessment of robotic cleaning of fish processing plants using CNN
(Journal article; Peer reviewed, 2019)A vision system has been developed for automatic quality assessment of robotic cleaning of fish processing lines. The quality assessment is done by detecting residual fish blood on cleaned surfaces. The system is based on ... -
Vision-Aided Inertial Navigation for Underwater Vehicles Using ArUco Markers
(Master thesis, 2021)Skiftet fra tradisjonell olje- og gassproduksjon mot produksjonsenheter på havbunnen har skapt et økt behov for undervannsoperasjoner. Dette har motivert bruken av autonomi for å effektivisere operasjoner og redusere ...