Browsing NTNU Open by Title
Now showing items 50322-50341 of 100788
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Isogeometric Kirchhoff-Love shell formulation for elasto-plasticity
(Journal article; Peer reviewed, 2018)An isogeometric thin shell formulation allowing for large-strain plastic deformation is presented. A stress-based approach is adopted, which means that the constitutive equations are evaluated at different integration ... -
Isogeometric methods for CFD and FSI-simulation of flow around turbine blades
(Journal article; Peer reviewed, 2015)Coupled fluid-structure interaction simulations of wind turbines have traditionally been considered computationally too expensive to carry out. However, more powerful computers and better solution techniques based on ... -
Isogeometric Methods for Computational Fluid Dynamics: Divergence-conforming Discretizations for the 2D Stokes Equations
(Master thesis, 2014)In this thesis we look at how boundary value problems for partial differential equations can be solved numerically using B-splines, or more generally NURBS, both to express the geometry of the problem exactly and as a basis ... -
Isogeometric Modeling and Experimental Investigation of Moving-Domain Bridge Aerodynamics
(Journal article; Peer reviewed, 2019)Computational fluid dynamics (CFD) and fluid–structure interaction (FSI) are growing disciplines in the aeroelastic analysis and design of long-span bridges, which, with their bluff body characteristics, offer major ... -
Isogeometric Phase-Field Methods for Modeling Fracture in Shell Structures
(Doctoral theses at NTNU;2021:87, Doctoral thesis, 2021)The simulation of the fracture of engineering structures is a challenging topic that requires accurate and efficient numerical models. This thesis focuses on the modeling of brittle and ductile fracture in thin shell structures ... -
Isogeometric Structural Analysis of Wind Turbine Blades
(Master thesis, 2018)Isogeometric analysis, IGA, seeks to bridge the gap between engineering design and computational analysis by using spline functions as finite element bases in the analysis framework. The general concept can be applied to ... -
Isogeometrisk analyse av Boussinesq ligningene
(Master thesis, 2016)In this master thesis, I have solved the Boussinesq equations with Isogeometric Analysis to study heat transfer coupled with air circulation. The Boussinesq equations consist of the Navier-Stokes equations and the ... -
Isolasjon; Trefiber vs mineralull Sammenlikning og vurdering av måleresultater fra test-hus på Huntonstranda samt livsløpsvurderinger
(Bachelor thesis, 2021)Oppgaven undersøker om trefiberisolasjonens hygrotermiske egenskaper vil påvirke varmegjennomgangen og redusere energibehov i bygg. Dette er gjort gjennom litteraturstudie og analyse av måleresultater fra testhus etablert ... -
Isolated and combined effects of high-intensity interval training and time-restricted eating on glycaemic control in reproductive-aged women with overweight or obesity: Study protocol for a four-armed randomised controlled trial
(Peer reviewed; Journal article, 2021)Introduction Overweight and obesity in reproductive aged women is a global problem due to the increased risk of subfertility, pregnancy complications and cardiometabolic diseases. High-intensity interval training and ... -
Isolated and combined effects of time-restricted eating and high-intensity interval training on glycemic control in reproductive-aged women with overweight/obesity: Preliminary findings from a randomized controlled trial
(Master thesis, 2020)Introduksjon. Fedme og insulinresistens er assosiert med en forhøyet risiko for diabetes type 2 og kardiovaskulære sykdommer. Strategier som innebærer diett og trening står i front i behandlingen mot fedme, for å forhindre ... -
Isolated and combined effects of time-restricted eating and high-intensity interval training on sleep quality in women with overweight or obesity
(Master thesis, 2021)Background: Sleep disorder is one of the leading risk factors for obesity and vice versa, and it is estimated that approximately one-third of the adult population has insufficient sleep. Time-Restricted Eating (TRE) and ... -
Isolated Full-Bridge DC-DC Converter Configurations for Photovoltaic Applications using Modular Multilevel Converter
(Master thesis, 2018)As a result of the continuously increasing carbon emissions, the global demand for cleaner energy is rising. Grid-connected photovoltaic (PV) systems is an attractive solution to provide green energy, and PV technology has ... -
Isolated Handwritten Character Recognition of Ancient Hebrew Manuscripts
(Journal article, 2022)Character recognition is widely considered an essential factor in preserving and digitizing historical handwritten documents. While it has shown a significant impact, the character recognition of historical handwritten ... -
Isolated High-Frequency Link PFC Rectifier With High Step-Down Factor and Reduced Energy Circulation
(Peer reviewed; Journal article, 2022)This article presents an isolated single-stage ac–dc high-frequency link full-bridge cycloconverter (HFLC) with high conversion ratio. Despite certain advantages, such topologies gen- erally suffer from transformer leakage ... -
Isolating the Black Box - Exploring the Effects of a Material Interface in Evolution in Materio
(Master thesis, 2015)Evolution in Materio (EiM) is the concept of exploiting intrinsic properties of various materials, or "black boxes", to perform computation. Motivation for EiM is multitudinous; new paradigms for computing, increased ... -
Isolation and Characterization of Oil-Soluble Calcium Naphthenates in North Sea Heavy Crude Oil
(Master thesis, 2014)Naphthenic acids are a diverse group of saturated mono- and polycyclic carboxylic acids that may account for as much as 10-12 weight % of crude oil. During production at several newer oil fields, there have been discoveries ... -
Isolation and comparison of neural stem cells from the adult rat brain and spinal cord canonical neurogenic niches
(Peer reviewed; Journal article, 2022)Here, we present a unified protocol for the extraction, culture, and basic characterization of rat neural stem cells (NSCs) from all three canonical neurogenic niches in the brain and spinal cord. We describe tissue ... -
Isolation and cultivation of primary muscle cells from Lobster (Homarus gammarus)
(Peer reviewed; Journal article, 2022) -
Isolation and determination of flavonoids in Herniaria incana
(Master thesis, 2021) -
Isolation and genome sequencing of four Arctic marine Psychrobacter strains exhibiting multicopper oxidase activity
(Journal article; Peer reviewed, 2016)Background Marine cold-temperature environments are an invaluable source of psychrophilic microbial life for new biodiscoveries. An Arctic marine bacterial strain collection was established consisting of 1448 individual ...