Blar i USN Open Archive på tittel

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    • 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 enhanced oil recovery with CO2 injection 

      Holte, Simon Salvesen; Knutsen, Jan Vidar E.; Ommedal, Roy Sømme; Moldestad, Britt Margrethe Emilie (Journal article; Peer reviewed, 2019)
      One of the goals of the Paris Agreement is to reduce the CO2 emission to the atmosphere. This paper deals with CO2-EOR, which is a good option for utilizing and storing CO2. Four cases were simulated using the commercial ...

    • Simulation of entrained flow gasification reactor with Multi Phase Particle in Cell (MP-PIC) approach 

      Timsina, Ramesh; Thapa, Rajan Kumar; Moldestad, Britt Margrethe Emilie; Eikeland, Marianne Sørflaten (Journal article; Peer reviewed, 2020)
      An Entrained flow gasification reactor is studied in this work. Entrained flow reactors are best suited for a feed with small particles at large capacity, at high temperatures, pressures and with short residence time. This ...

    • Simulation of FA and DDT in a channel with repeated obstacles with an under-resolved mesh 

      Vågsæther, Knut; Bjerketvedt, Dag (Conference object; Peer reviewed, 2009)

    • Simulation of flame acceleration and DDT in H-2-air mixture with a flux limiter centered method 

      Vågsæther, Knut; Knudsen, Vegeir; Bjerketvedt, Dag (Journal article; Peer reviewed, 2007)
      Flame acceleration and deflagration to detonation transition (DDT) is simulated with a numerical code based on a flux limiter centered method for hyperbolic differential equations. The energy source term is calculated by ...

    • Simulation of flame acceleration in an obstructed tube with LES 

      Vågsæther, Knut; Bjerketvedt, Dag (Conference object; Peer reviewed, 2007)

    • Simulation of flow in sedimentation tank using FLUENT 

      Weerasooriya, Achini (Master thesis, 2015-10-09)
      Sewage treatment is the process which removes majority of the contaminants from a sewage stream and produces a liquid effluent suitable for safe disposal into the natural environment and sludge. Physical, chemical and ...

    • Simulation of gas and liquid flow in a biogas reactor using Fluent. 

      Dayarathna, Sithara (Master thesis, 2015-09-18)
      Anaerobic Digestion (AD) is a popular secondary treatment method to handle biological wastes in sewage and wastewater treatment plants due to its multiple benefits apart from the waste reduction. One of the biogas reactors ...

    • Simulation of Gasification of Livestock Manure with Aspen Plus 

      Haugen, Hildegunn H.; Halvorsen, Britt; Eikeland, Marianne Sørflaten (Conference object; Peer reviewed, 2015-11-25)
      Gasification is a flexible technology where all types of organic waste including biomass from manure can be used as feed to the reactor. The recovery of energy from solid waste offers several benefits including substantial ...

    • Simulation of hydrogen tank refueling 

      Salcido Sanchez, Jose Luis (Master thesis, 2021)
      Several simulations of hydrogen filling process for a type IV tank were completed using openFOAM Computational Fluid Dynamics (CFD) open-source code. CFD codes have been proven to be a useful method for estimating temperature ...

    • Simulation of Hydrogen Tank Refuelling 

      Mojarrad, Masih (Master thesis, 2020)
      As an alternative to fossil fuels and as a sustainable energy carrier, there are considerable interestsin investigating hydrogen. Hence, it seems significant to evaluate the behavior of hydrogen in refueling or storing. ...

    • Simulation of improved absorption configurations for CO2 capture 

      Øi, Lars Erik; Aromada, Solomon Aforkoghene (Conference object; Peer reviewed, 2015-11-25)
      The most well-known technology for post combustion CO2 capture from exhaust gas is absorption in an amine-based solvent followed by desorption. The drawback of this method is the high heat consumption required for desorption. ...

    • Simulation of manure resource recovery plant 

      Hussain, Shahid (Master thesis, 2015-09-18)
      The Bio Win software was used to simulate manure feeding to a separator, anaerobic digester (AD) and activated sludge (AS) nitrification reactor system. The General Bio Win model called integrated AS/AD model was capable ...

    • Simulation of oil production and CO₂ 

      Furuvik, Nora Cecilie Ivarsdatter (Master thesis, 2016)
      Deep geologic injection of supercritical carbon dioxide (CO₂) for enhanced oil recovery (EOR), plays an important role in the sequestration of CO₂ to minimize the impact of CO₂-emissions due to global warming. CO₂-EOR ...

    • Simulation of Oil Production from Homogenous North Sea Reservoirs with Inflow Control using OLGA/Rocx 

      Sund, Sveinung Martinius; Iversen, Thomas Berg; Hansen, Magnus S.; Bohlin, Jørgen; Vøllestad, Ole Kristian; Furuvik, Nora Cecilie Ivarsdatter; Halvorsen, Britt (Journal article; Peer reviewed, 2017)
      Advances in drilling technology have made long, horizontal wells the preferred method to extract oil from reservoirs in the Norwegian Sector. Early water or gas breakthrough is a passive inflow control devices (ICD) are ...

    • Simulation of Oil Recovery Through Advanced Wells Using a Transient Fully Coupled Well-Reservoir Model 

      Madhawee Anuththara, Juwan Gomasge; Moradi, Ali; Kumara, Amaranath S.; Moldestad, Britt Margrethe Emilie (Chapter, 2023)
      Oil recovery can be enhanced by maximizing the well-reservoir contact using long horizontal wells. One of the main challenges of using such wells is the early breakthrough of unwanted fluids due to the heel-toe effect and ...

    • Simulation of Simplified Model for Reaction Kinetics in Biomass Gasification 

      Agu, Cornelius Emeka; Thapa, Rajan Kumar; Halvorsen, Britt (Conference object; Peer reviewed, 2015-11-25)
      Due to complexity in interactions between solid particles and between particles and carrier fluid, modeling of biomass gasification kinetics has been shown to be very challenging. Some commercial packages such as Barracuda ...

    • Simulation of the Effect of Local Electric Potential and Substrate Concentration on CO2 Reduction via Microbial Electrosynthesis 

      Ahmadi, Vafa; Dinamarca, Carlos (Peer reviewed; Journal article, 2022)
      Integrating anaerobic digestion into electrochemical reactors is an advanced technology for biomethane recovery. Imposing low electric potential between electrodes, supplies CO2, electrons, and hydronium ions from anodic ...

    • Simulation of the Pyrolysis Process: from Plastic Waste to Environmental Friendly Fuel 

      Andersen, Marius; Sætre, Kai Arne; Fredriksen, Siw Bodil; Pfeiffer, Carlos Fernando (Journal article; Peer reviewed, 2018)
      How to deal with plastic waste is an important question, as it may affect both the climate and environment. A method that may be beneficial to dispose some kinds of plastic waste that cannot be material-recycled is ...