Blar i USN Open Archive på forfatter "Moldestad, Britt Margrethe Emilie"
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Sensitivity Analysis and Effect of Simulation parameters of CPFD Simulation in Fluidized Beds
Bandara, Janitha; Nielsen, Henrik Kofoed; Moldestad, Britt Margrethe Emilie; Eikeland, Marianne Sørflaten (Journal article; Peer reviewed, 2018)Fluidized bed technology is broadly applied in industry due to its distinct advantages. CFD simulation of fluidized beds is still challenging compared to single-phase systems and needs extensive validation. Multiphase ... -
Sensitivity analysis of oil production models to reservoir rock and fluid properties
Sharma, Bikash (Master thesis, 2021)In this fast-growing world, the demands for energy supply are growing rapidly as well. The oil has become one of the basic needs of human beings in this era. Hence, to meet the supply of the growing world, the available ... -
Simulation of a purification plant for pyrolysis gas based on plastic waste
Quaredaghi, Ebrahim; Ronasi, Sara; Moldestad, Britt Margrethe Emilie (Peer reviewed; Journal article, 2020)This study focuses on exctracting ethylene and propylene from other componenents in the pyrolysis gas mixture of plastic waste. Selective absorption of ethylene and propylene from the gas mixture by using a silver nitrate ... -
Simulation of air-biomass gasification in a bubbling fluidized bed using CPFD model
Timsina, Ramesh; Moldestad, Britt Margrethe Emilie; Eikeland, Marianne Sørflaten; Thapa, Rajan Kumar (Journal article; Peer reviewed, 2019)Biomass is a renewable energy source. Biomass gasification process produces producer gas, which can be further used for power generation or as raw materials for the production of secondary fuels. Experiment on the air ... -
Simulation of blue hydrogen production by natural gas in the North Sea
Deeraksa, Chidapha; Furuvik, Nora Cecilie Ivarsdatter; Moldestad, Britt Margrethe Emilie (Peer reviewed; Journal article, 2023)Hydrogen is an efficient energy carrier and an important contribution to sustainable energy development. Hydrogen can be produced based on different methods and on different raw materials. Blue hydrogen is hydrogen produced ... -
Simulation of CO2 storage in the North Sea
Torsen, Arne O.; Smistad, Harris J.; Tveit, Håkon; Hansen, Ole C.; Bjørtuft, Vegard G.; Furuvik, Nora Cecilie Ivarsdatter; Moldestad, Britt Margrethe Emilie (Journal article; Peer reviewed, 2018)Use of fossil fuel has resulted in emission of large amounts of CO2 to the atmosphere, which increases the risk of global heating. There is a lot of research going on regarding CO2 capture and storage. The Paris Agreement, ... -
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 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 ... -
Study of agglomeration in fluidized bed gasification of biomass using CPFD simulations
Furuvik, Nora Cecilie Ivarsdatter; Jaiswal, Rajan; Thapa, Rajan Kumar; Moldestad, Britt Margrethe Emilie (Journal article; Peer reviewed, 2019)Fluidized beds have been widely applied for the gasification of biomass. However, at high temperatures ash melting and subsequently bed agglomeration may occur. When biomass is used for thermal conversion processes, inorganic ... -
Study of agricultural waste gasification in an air-blown bubbling fluidized bed using a CPFD model
Jaiswal, Rajan; Thapa, Rajan Kumar; Moldestad, Britt Margrethe Emilie (Journal article; Peer reviewed, 2020)Gasification using a fluidized bed is a promising technology to convert agricultural residues into product gases. In this work, the syngas production potential from agricultural waste (grass pellets) is studied using ... -
Study of Fluidization Regimes using OpenFOAM Computational Fluid Dynamics
Welahettige, Prasanna Kumara Welahetti; Lie, Bernt; Vågsæther, Knut; Moldestad, Britt Margrethe Emilie (Journal article; Peer reviewed, 2017)The objective of this study was using computational fluid dynamics simulation with OpenFOAM to study the fluidization properties for four types of particles classified as Geldart A, B, C and D. Fluidization regimes were ... -
Study of fluidized bed regimes using Computational Particle Fluid Dynamics
Jaiswal, Rajan; Agu, Cornelius Emeka; Thapa, Rajan Kumar; Moldestad, Britt Margrethe Emilie (Journal article; Peer reviewed, 2018)The fluidization technology has a wide range of applications. In chemical synthesis, fluidized bed is used to enhance heat and mass transfer between the reacting species. More application of this technology can also be ... -
Validation of results from Barracuda® CFD modelling to predict the minimum fluidization velocity and the pressure drop of Geldart A particles
Jayarathna, Chameera K.; Moldestad, Britt Margrethe Emilie; Tokheim, Lars-André (Journal article; Peer reviewed, 2017)Fluidization characteristics such as the minimum fluidization velocity and the bed pressure drop are important for the design of an efficient fluidized bed. These characteristics can be measured experimentally, but also ...