Blar i Fakultet for ingeniørvitenskap (IV) på tittel
Viser treff 21614-21633 av 23229
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Transforming the Norwegian Dwelling Stock to Reach the 2 Degrees Celsius Climate Target
(Journal article; Peer reviewed, 2013)Residential buildings account for about one third of the final energy demand in Norway. Many cost-effective measures for reducing heat losses in buildings are known and their gradual implementation may make the building ... -
Transient analysis of wet gas compression systems
(Doctoral theses at NTNU;2019:159, Doctoral thesis, 2019)The demand for oil and gas remains high, and changing market conditions require innovative solutions. Development of compression technology tailored for subsea oil and gas production can contribute significantly to ... -
Transient CFD-analysis of a high head Francis turbine
(Master thesis, 2014)The purpose of the present work has been to investigate how well transformation methods work as a method to get realistic inlet boundary conditions to a draft tube without using excessive amounts of computational resources. ... -
Transient Compressor System Analysis
(Master thesis, 2019)Det pågåande arbeidet mot ein meir kostnadseffektiv og miljøvennleg olje- og gassindustri har ført til visjonen om undervassfabrikkar og utviklinga av våtgass kompressorsystem. Erfaringa med slike typar system er fortsatt ... -
Transient Dynamic Response of Ship Hull
(Master thesis, 2015)Slamming often occurs in severe sea states particular for high speed vessels, which can cause damage to ship hulls or even equipment on ships. Analysis of transient dynamic response of ship hulls is useful in establishing ... -
Transient dynamics of drilling riser during disconnect
(Master thesis, 2011)Drilling of petroleum wells have traditionally be done by adjusting the mud weight to balance pressure of the well. A new method of controlling well pressure is called controlled mud cap drilling. The method uses high mud ... -
Transient dynamikk i gasstransport
(Master thesis, 2011)Beregningsmodeller som i dag brukes til prediksjon og overvåkning av gasstransport, er stort sett basert på 1 dimensjonale betraktninger. Friksjonsfaktoren som brukes i disse modellene er gjerne av typen Colebrook-White, ... -
Transient Flow in Gas Transport
(Master thesis, 2011)Transport of natural gas to continental Europe and UK is a large portion ofNorwegian petroleum industry. The gas is mainly transported undersea inlarge-scale transport pipelines. Amount of transported gas is currently ... -
Transient friction in pressurized pipes; the water hammer phenomenon
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:135, Doctoral thesis, 2010)The friction in non-stationary flow is an intriguing and interesting phenomenon. Many types of non-stationary flow exist, and the friction involved in these flows is in many cases significantly different from the steady ... -
Transient heat production and release profiles for wood stoves
(Journal article; Peer reviewed, 2018)Combustion of wood logs in wood stoves and fireplaces occurs through a so-called batch combustion process, i.e. it is a highly transient process where most parameters change during the combustion cycle. This results in ... -
Transient Heat Transfer in Boreholes with Application to Non-Grouted Borehole Heat Exchangers and Closed Loop Engineered Geothermal Systems
(Doctoral thesis at NTNU;2016:76, Doctoral thesis, 2016)This thesis concerns heat transfer processes in single boreholes and systems of boreholes. The thesis is divided in two parts of which the first considers borehole heat exchangers (shallow geothermal energy), and the ... -
Transient LDV-measurements in the draft tube of a high head Francis turbine
(Master thesis, 2014)Francis-99 is a series of upcoming workshops aimed at determining the state of the art of high head Francis turbine simulations. The scope of this essay is to provide empirical data to serve as validation for the CFD ... -
Transient Modelling of Hydropower Plants
(Master thesis, 2016)Any changes of the volume flow through a turbine gives acceleration or deceleration of the masses of water in the penstock. This induces dynamic pressure changes in front of the turbine. A pressure transient must be ... -
Transient Performance and Emissions of a Turbocharged Diesel Engine for Marine Power Plants: Numerical Simulation and Experimental Investigation
(Doctoral theses at NTNU;2017:237, Doctoral thesis, 2017)New marine power and propulsion plants have to meet increasingly stringent environmental regulations and requirements for flexible and efficient operations. Such a multi-objective task requires a systems approach in which ... -
Transient Performance in Dynamic Positioning of Ships: Investigation of Residual Load Models and Control Methods for Effective Compensation
(Doctoral theses at NTNU;2020:355, Doctoral thesis, 2020)This thesis concerns how the dynamic positioning (DP) control system can better handle transient events, where the loads experienced by the vessel change significantly over a short time frame. The material is intended for ... -
Transient performance of combined cycle power plant with absorption based post-combustion CO2 capture: dynamic simulations and pilot plant testing
(Doctoral theses at NTNU;2018:168, Doctoral thesis, 2018)The thesis presents transient performance analysis of chemical absorption processes for reducing CO2 emissions from natural gas combined cycle power plants (NGCCs), which can contribute to reduce greenhouse gas emissions ... -
Transient pressure loading of clamped metallic plates with pre-formed holes
(Journal article; Peer reviewed, 2013)The combined effect of blast and impact loading against protective structures is still not fully understood. In this paper, the motivation is to investigate the combined effect of pressure and fragment loading on steel ... -
Transient simulation of failures during start-up and power cut of a solid oxide fuel cell system using multiphysics modeling
(Journal article; Peer reviewed, 2021)We investigate failure incidents of a solid oxide fuel cell (SOFC) system during start-up from ambient conditions as well as during operation around the design point, using numerical simulation with a view to performance ... -
Transient system-level performance and thermo-mechanical stress analysis of a solid oxide fuel cell-based power generation plant with a multi-physics approach
(Journal article; Peer reviewed, 2020)A solid oxide fuel cell-based (SOFC) power generation plant is analyzed with a view to performance as well as thermo-mechanical stresses. Emphasis is given to design and operation constraints of individual components as ... -
Transient Thermo-Acoustic Responses of Methane/Hydrogen Flames in a Pressurized Annular Combustor
(Peer reviewed; Journal article, 2022)The present article experimentally investigates the triggering and transient growth of azimuthal instabilities in a pressurized laboratory-scale annular combustor featuring 12 methane/hydrogen flames, as the equivalence ...