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Large Time Step Explicit Schemes for Partial Differential Evolution Equations
(Master thesis, 2016)We consider the large time step (LTS) method for hyperbolic conservation laws, originally proposed by LeVeque in a series of papers over thirty years ago. In particular we have designed a local multi-point LTS scheme, ... -
Large time step HLL and HLLC schemes
(Journal article; Peer reviewed, 2018)We present Large Time Step (LTS) extensions of the Harten-Lax-van Leer (HLL) and Harten-Lax-van Leer-Contact (HLLC) schemes. Herein, LTS denotes a class of explicit methods stable for Courant numbers greater than one. The ... -
Large Time Step Methods for Hyperbolic Conservation Laws
(Doctoral theses at NTNU;2017:285, Doctoral thesis, 2017)The HLL (Harten–Lax–van Leer) and HLLC (HLL–Contact) schemes are extended to LTS-HLL(C) schemes. The LTS-HLL-type schemes for scalar conservation laws are defined in the numerical viscosity, flux-difference splitting and ... -
Large Time Step Methods for Hyperbolic Partial Differential Equations
(Master thesis, 2017)In this thesis we consider explicit finite volume methods that are not limited by the Courant-Friedrichs-Lewy (CFL) condition, referred to as large time step (LTS) methods. LeVequeproposed the first LTS method in the 1980 ... -
Large Time Step Roe scheme for a common 1D two-fluid model
(Journal article; Peer reviewed, 2017)We present the Large Time Step (LTS) extension of the Roe scheme and apply it to a standard two-fluid model. Herein, LTS denotes a class of explicit methods that are not limited by the CFL (Courant–Friedrichs–Lewy) condition, ... -
Large volume scanning laser induced fluorescence measurement of a bluff-body stabilised flame in an annular combustor
(Journal article; Peer reviewed, 2022)This study outlines a variant of three-dimensional OH planar laser-induced fluorescence and its application in characterising a single bluff body stabilised flame inside a 12 burner annular combustor. In this variant of ... -
Large-eddy simulations of the flow over a semi-circular cylinder at Re = 50000
(Journal article, 2021)Large-eddy simulations (LES) of the flow over a semi-circular cylinder at a diameter-based Reynolds number 50000 and zero angle of attack are presented. In comparison with the prominent benchmark flows past circular and ... -
Large-eddy simulations of the flow past a bluff-body with active flow control based on trapped vortex cells at Re = 50000
(Peer reviewed; Journal article, 2023)We investigate a novel flow control concept, which allows to govern bluff-body wake dynamics and the laminar–turbulent transition by suppressing vortex shedding and obtaining the mostly detached flow. Large-eddy simulations ... -
Large-scale monitoring of operationally diverse district heating substations: A reference-group based approach
(Peer reviewed; Journal article, 2020)A typical district heating (DH) network consists of hundreds, sometimes thousands, of substations. In the absence of a well-understood prior model or data labels about a substation, the overall monitoring of such large ... -
Latent heat storage for centralized heating system in a ZEB living laboratory: integration and design
(Journal article; Peer reviewed, 2019)The ZEB Lab project, coordinated by SINTEF and NTNU, aims at building a ZEB (Zero Emission Building) in Trondheim (Norway) in 2019, to be used both as office building and living laboratory. An innovative latent heat storage ... -
Latent heat thermal energy storage from wood stoves with high-density polyethylene as phase change material
(Master thesis, 2021)Vedovner har i lang tid vært en viktig kilde til oppvarmning i Norden, men den typiske husstand blir bedre og bedre isolert for å redusere behovet for oppvarming. En vedovn vil vanligvis levere mer varme enn det som er ... -
Latitudinal, seasonal and depth-dependent variation in growth, chemical composition and biofouling of cultivated Saccharina latissima (Phaeophyceae) along the Norwegian coast
(Journal article; Peer reviewed, 2020)The Norwegian coastline covers more than 10° in latitude and provides a range in abiotic and biotic conditions for seaweed farming. In this study, we compared the effects of cultivation depth and season on the increase in ... -
Lavenergi i næringsbygg
(Master thesis, 2008)Bygningen som er lokalisert i Trondheim sentrum består hovedsakelig av tre leietagere, en dagligvarebutikk og to kontorbedriftene. Kontorbedriftene består av en IT-bedrift og en kommunal etat. Alle leietagerne har hvert ... -
Lavtemperatur-varmenett
(Master thesis, 2017)Hensikten med oppgaven er å vurdere energisparingspotensialet ved overgang fra høytemperatur til lavtemperatur fjernvarme. Lavtemperatur fjernvarme er et virkemiddel for å nå målene om fleksibel og energieffektiv varmeforsyning. ... -
A layout design method for an industrial park based on a novel arrangement algorithm – Consideration of pipe network and multiple hazard sources
(Peer reviewed; Journal article, 2020)The general layout design of an industrial park has a significant impact on safety, transportation, piping, and land occupation. Currently, the relevant studies are not mature, and most of the practical designs heavily ... -
LC-IMPACT: A regionalized life cycle damage assessment method
(Peer reviewed; Journal article, 2020)Life cycle impact assessment (LCIA) is a lively field of research, and data and models are continuously improved in terms of impact pathways covered, reliability, and spatial detail. However, many of these advancements ... -
LCA and negative emission potential of retrofitted cement plants under oxyfuel conditions at high biogenic fuel shares
(Peer reviewed; Journal article, 2022)The implementation of oxyfuel carbon capture and storage technologies in combination with use of alternative fuels comprising high biogenic shares is promoted as an attractive climate change mitigation option for the cement ... -
LCA Modelling for Zero Emission Neighbourhoods in Early Stage Planning
(Master thesis, 2018)The building sector is a major driver of climate change and recent years it has been a growing focus on limiting greenhouse gas (GHG) emissions associated with the built environment. In Norway, the Research Centre on Zero ... -
LCA of biogas/biofuel production from organic waste substrates under Danish and Polish conditions
(Master thesis, 2015)Anaerobic digestion (AD) of organic waste and manure in Denmark (DK) and Poland (PL) is in expansion and it is believed to contribute considerably to reaching the EU goals on reducing CO2 and establishing a sustainable ... -
LCA of different concepts for Leisure Home Buildings with frost safe sanitary installations
(Master thesis, 2010)The aim of the present work was to perform a life cycle analysis and life cycle cost analysis for several building constructions with different frost-safe sanitary installations and methods for energy supply. The deduction ...