Blar i Fakultet for ingeniørvitenskap (IV) på tittel
Viser treff 22792-22811 av 23484
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Variability of building energy performance at a scale: conformity of predictive and synthesis with explanatory modelling practices
(Doctoral theses at NTNU;2022:239, Doctoral thesis, 2022)Throughout its existence, humankind invented countless means and practices to design, construct and equip buildings. The number of ways to use these buildings, with or without strictly following their initially intended ... -
Variable camber hydrofoils in oscillating hydrofoil propulsion - Development of a prototype and a efficiency test setup
(Master thesis, 2017)Flapping Foil is an ongoing development project at NTNU Technology Transfer working on a new way of propulsion for boats. Their goal is to eliminate two of the biggest issues with boats today, the low efficiency of boat ... -
Variable Inlet and Exhaust Valve Operation in Medium Speed Marine Diesel Engines
(Master thesis, 2010)This thesis was successfully completed through five main parts. First a lingering issue of great importance was dealt with in order to start the use of the provided simulation model. This task was imperative to accurate ... -
Variable source depth acquisition for improved marine broadband seismic data
(Journal article; Peer reviewed, 2015-05)In marine seismic data acquisition, varying the source depth along a sail line gives diversity in sequential shot gather frequency spectra. Undesired alterations of the frequency spectra are created by the source ghost and ... -
Variable speed operations of Francis turbines
(Master thesis, 2019)Den økende andelen av uregulerbar kraftproduksjon, som vind og sol, blir det stadig viktigere å ha mer pålitelige energikilder for å tilfredsstille etterspørselen av et varierende strømforbruk.Vannkraft kan brukes til dette ... -
Variable-speed operation and pressure pulsations in a Francis turbine and a pump-turbine
(Journal article; Peer reviewed, 2019)The paper presents result from model measurements of the efficiency and pressure pulsation intensities for two low-specific-speed hydraulic turbines operated at variable speed, namely, one splitter-bladed Francis turbine ... -
Variant Creation of Onshore Steel Outfitting Structures
(Master thesis, 2010)Pipe racks are steel frame structures used to support piping, cables, trays etc. at oil and gas facilities onshore and offshore. Pipe racks may vary in design but thefundamental principals are the same. The geometry is ... -
Variation in aircraft engine exhaust emissions in relation to flight altitude and degraded engine performance
(Doktoravhandlinger ved NTNU, 1503-8181; 2001:21, Doctoral thesis, 2001)This work is a study to quantify the exhaust emissions from a short-haul commercial jet flight and the way wngine fouling and aging influence these quantities. Focus was set on the distribution of the released gases along ... -
Variation in predicting pantograph–catenary interaction contact forces, numerical simulations and field measurements
(Journal article; Peer reviewed, 2017)The contact force between the pantograph and the contact wire ensures energy transfer between the two. Too small of a force leads to arching and unstable energy transfer, while too large of a force leads to unnecessary ... -
Variation in trends of consumption based carbon accounts
(Journal article; Peer reviewed, 2019)The UNFCCC requires the annual reporting of greenhouse gas emissions. These inventories focus on emissions within a territory, and do not capture the effect of emissions embodied in imports. Consumption based carbon ... -
Variation of Legionella spp. with Lake Depth and Season in Two Norwegian Drinking Water Sources
(Journal article; Peer reviewed, 2022) -
Variational formulations, model comparisons and numerical methods for Euler–Bernoulli micro- and nano-beam models
(Journal article; Peer reviewed, 2017)As a first step, variational formulations and governing equations with boundary conditions are derived for a pair of Euler–Bernoulli beam bending models following a simplified version of Mindlin’s strain gradient elasticity ... -
A variational multiscale framework for atmospheric turbulent flows over complex environmental terrains
(Peer reviewed; Journal article, 2020)A residual-based variational multi-scale (VMS) modeling framework is applied to simulate atmospheric flow over complex environmental terrains. The VMS framework is verified and validated using two test cases using linear ... -
Varighet av salttiltak med befuktet salt - Effekt av ulike befuktningsvæsker og kornstørrelse på salttap fra vegbanen
(Master thesis, 2017)Vegsalting er viktig for god framkommelighet og for å opprettholde trafikksikkerheten. Etter hvert som saltbruken øker, blir det behov for å optimalisere bruken grunnet miljøkonsekvenser. Riktig spredemetode er et mulig ... -
Various Approaches to Early Contractor Involvement in Relational Contracts
(Journal article; Peer reviewed, 2021)The main rationale for involving contractors is to apply collaboration to mitigate risk and to harvest opportunities to reduce cost and to increase the project owner’s value. In the paper we argue in the applied analytical ... -
Varmelagring i neste generasjon vedovner
(Master thesis, 2013)Instituttet for energi- og prosessteknikk er involvert innen forskning og utvikling av neste generasjons vedovner. Et av målene for slike vedovner er at de skal ha en vesentlig jevnere effektavgivelse enn dagens løsninger. ... -
Varmelagring i neste generasjon vedovner
(Master thesis, 2013)Instituttet for energi- og prosessteknikk er involvert innen forskning og utvikling av neste generasjons vedovner. Et av målene for slike vedovner er at de skal ha en vesentlig jevnere effektavgivelse enn dagens løsninger. ... -
Varmeovergang og strømningsfordeling i varmetekniske komponenter
(Master thesis, 2007)Sammendrag del 1: Miljømessige problemer som følge av utslipp av klimagasser og knapphet på fossile brensler har tvunget bilindustrien til å lete etter alternative måter å operere kjøretøy på. Hydrogen blir betraktet som ... -
Varmeovergang og trykktap i dampkjeler
(Master thesis, 2012)Oppgaven tar utgangspunkt i anleggskonfigurasjonen til dampkjelkonseptet utviklet av Energos AS. Dampkjelen er en nøkkelkomponent i avfallsforbrenningsanlegg og har som oppgave å overføre termisk energi (varme) fra varm ... -
Varmeovergang og trykktap i kveilede annulære rør
(Master thesis, 2016)På tross av at kveilede dobbelt-rør er mye brukt i tekniske anvendelser, finnes det svært lite i litteraturen om varmeovergang og trykktap i kveilede annulære rør. Numeriske studier av effektene av diameterforholdet, ...