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    • SiC formation and SiO reactivity of methane at high temperatures 

      Aarnæs, Trygve Storm; Tangstad, Merete; Ringdalen, Eli (Peer reviewed; Journal article, 2021)
      Methane (CH4) is a carbon source currently not in use in the production of silicon. Using a gaseous carbon source instead of conventional solid carbon sources presents an opportunity to rethink silicon production. Preliminary ...

    • Silica from diatom frustules as anode material for Li-ion batteries 

      Norberg, Andreas Nicolai; Wagner, Nils Peter; Kaland, Henning; Vullum-Bruer, Fride; Svensson, Ann Mari (Journal article; Peer reviewed, 2019)
      In spite of its insulating nature, SiO2 may be utilized as active anode material for Li-ion batteries. Synthetic SiO2 will typically require sophisticated synthesis and/or activation procedures in order to obtain a ...

    • Silicon anodes for lithium-ion batteries produced from recovered kerf powders 

      Wagner, Nils Peter; Tron, Artur; Tolchard, Julian R; Noja, Gianluigi; Bellmann, Martin Pawel (Peer reviewed; Journal article, 2019)
      Silicon kerf waste from a photovoltaic silicon production process is assessed as an anode material for application as a lithium ion battery anode. In contrast to previous studies, the Si-kerf is used as-produced, with no ...

    • Silicon carbide formation from methane and silicon monoxide 

      Aarnæs, Trygve Storm; Ringdalen, Eli; Tangstad, Merete (Peer reviewed; Journal article, 2020)
      Silicon carbide (SiC) formation plays an important role during the production of elemental silicon. SiC forms through a high temperature reaction between silicon monoxide gas (SiO) and carbon. Currently, the carbon sources ...

    • Silicon powder-based wafers for low-cost photovoltaics: Laser treatments and nanowire etching 

      Jia, Guobin; Plentz, Jonathan; Gawlik, Annett; S. Azar, Amin; Stokkan, Gaute; Syvertsen, Martin; Almeida Carvalho, Patricia; Dellith, Jan; Dellith, Andrea; Andrä, Gudrun; Ulyashin, Alexander (Peer reviewed; Journal article, 2018)
      In this study, laser-treated polycrystalline Si (pc-Si) wafers, fabricated by wire sawing of hot-pressed ingots sintered from Si powder, have been investigated. As-cut wafers and those with high-quality thin Si layers ...

    • Silicon-carbon composite anodes from industrial battery grade silicon 

      Foss, Carl Erik Lie; Andersen, Hanne Flåten; Ulvestad, Asbjørn; Kirkengen, Martin; Vullum, Per Erik; Voje, Jorunn; Tronstad, Ragnar; Mokkelbost, Tommy; Mæhlen, Jan Petter (Journal article; Peer reviewed, 2019)
      In this work, silicon/carbon composites for anode electrodes of Li-ion batteries are prepared from Elkem’s Silgrain® line. Gentle ball milling is used to reduce particle size of Silgrain, and the resulting Si powder consists ...

    • Simplified model description of a CLOP reactor for system simulation and analysis 

      Morud, John; Tobiesen, Finn Andrew; Cloete, Schalk Willem Petrus; Larring, Yngve; Chikukwa, Actor; Pishahang, Mehdi (Peer reviewed; Journal article, 2017)
      In order to perform overall system simulations and optimization at the flowsheet level, simplified models of process units are required. We present a simplified model of the CLOP reactor (chemical looping for oxygen ...

    • A simplified three-phase model of equiaxed solidification for the prediction of microstructure and macrosegregation in castings 

      Tveito, Knut Omdal; Pakanati, Akash; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha (Peer reviewed; Journal article, 2018)
      Macrosegregation is a result of the interplay of various transport mechanisms, including natural convection, solidification shrinkage, and grain motion. Experimental observations also indicate the impact of grain morphology, ...

    • Simulation and energy evaluation of two novel solvents developed in the EU project HiPerCap 

      Tobiesen, Finn Andrew; Haugen, Geir; Kim, Inna; Kvamsdal, Hanne Marie (Peer reviewed; Journal article, 2017)
      Simulation results on minimum specific reboiler duty (SRD) are presented for two absorption solvent systems selected in the HiPerCap project, here referred to as HC#1 and HC#2. An established base case has been used that ...

    • Simulation and Impact of different Optimization Parameters on CO2 Capture Cost 

      Aromada, Solomon Aforkoghene; Karunarathne, Sumudu; Eldrup, Nils Henrik; Orangi, Sina; Farsi Madan, Farzan; Fajferek, Katarzyna Grazyna; Sæter, Njål Torgeir; Bahri, Syaiful; Øi, Lars Erik (Peer reviewed; Journal article, 2021)
      The influence of different process parameters/factors on CO2 capture cost, in a standard amine based CO2 capture process was studied through process simulation and cost estimation. The most influential factor was found to ...

    • A simulation concept for generic simulation of multi-material flow using staggered cartesian grids 

      Meese, Ernst A.; Johansen, Stein Tore (SINTEF proceedings;2387-4295, Chapter; Peer reviewed, 2017)
      Simulation of multiphase flows is generally treated by various classes of Eulerian methods, Lagrangian methods, and various combinations of these. In the SIMCOFLOW initiative, we have set out to develop a framework for ...

    • Simulation of Condensation in Biogas containing Ammonia 

      Øi, Lars Erik; Bråthen, Terje; Hovland, Jon (Peer reviewed; Journal article, 2021)
      Condensation in raw biogas during compression is a problem because the CO2 and water in the liquid phase is very corrosive. Raw biogas typically contains 60 mol-% methane, 40 mol-% CO2, is saturated with water and may ...

    • Simulation of Condensation in Compressed Raw Biogas Using Aspen HYSYS 

      Øi, Lars Erik; Hovland, Jon (Journal article; Peer reviewed, 2018)
      Raw biogas typically contains 60 % methane, 40 % CO2, small amounts of other components and is saturated with water. It is a question whether raw biogas can be compressed to high pressures without condensation. The aim of ...

    • Simulation of dew points in raw biogas using PR and SRK equations of state : 

      Bråthen, Terje; Øi, Lars Erik; Hovland, Jon (Peer reviewed; Journal article, 2019)
      Biogas contains mainly methane, but raw biogas can contain large amounts of CO2 and is normally saturated with water. Condensation, especially during compression, may lead to operational problems. The aim of this work is ...

    • Simulation of ductile-to-brittle transition combining complete Gurson model and CZM with application to hydrogen embrittlement 

      Lin, Meichao; Yu, Haiyang; Ding, Yu; Olden, Vigdis; Alvaro, Antonio; He, Jianying; Zhang, Zhiliang (Peer reviewed; Journal article, 2022)
      A general simulation framework for modelling ductile-to-brittle transition in metals is proposed. The method combines the complete Gurson model and cohesive zone model, which brings ductile and brittle fracture mechanisms ...

    • SIMULATION OF ENTRAINMENT OF DROPLETS IN NON-RESOLVED WIND-WAVE FLOWS 

      DANG, Son Tung; HO, Lim Chi; JOHANSEN, Stein Tore (SINTEF Proceedings;6, Chapter; Peer reviewed, 2020)
      In this study we focus on a generic method to model the generation of droplets from a non-resolved simulation of free surface flow. The application is entrainment of droplets from the large-scale interface of waves ...

    • Simulation of fluid flow through real microannuli geometries 

      Corina, Anisa Noor; Skorpa, Ragnhild; Sangesland, Sigbjørn; Vrålstad, Torbjørn (Peer reviewed; Journal article, 2020)
      Debonding of well cement towards casing or rock, i.e. microannuli formation, is a typical failure mode of cement barriers. Consequently, such microannuli may act as leak paths during leakages of downhole fluids such as ...

    • Simulation of gas-liquid flows in separators. A Lagrangian approach 

      Morud, John; Dahl, Sigrid Kaarstad (Chapter; Peer reviewed, 2017)
      In order to simulate the separation efficiency of gas scrubbers, we have formulated and implemented a version of the Single-Particle Method. The method is suitable for CFD simulations of gas-droplet flows, and is based on ...

    • Simulation of large-strain behaviour of aluminium alloy under tensile loading using anisotropic plasticity models 

      Khadyko, Mikhail; Dumoulin, Stephane; Børvik, Tore; Hopperstad, Odd Sture (Peer reviewed; Journal article, 2015)
      Cylindrical smooth and notched AA6060 samples were tested in tension. The material was either cast and homogenised or extruded with strong cube texture. The textured specimens demonstrated unusual shapes of the fracture ...

    • Simulation of multi-market trading : a case study 

      Fodstad, Marte; Kaut, Michal (SINTEF Rapport;2019:01000, Research report, 2019)
      This report describes a study of day-ahead (DA) and intraday (ID) trade for a hydropower producer with a single reservoir and power plant. The study simulates the trade decisions and plant operation in a rolling-horizon ...