• Ammonia vent handling for carbon-free shipping 

      Ezeani Ezeani, Whitney Ndidi (Master thesis, 2023)
      The challenges of reducing greenhouse gas emissions in the growing maritime industry are substantial to reach the Paris Agreement and keep the global temperature rise below 2 ᵒC. Alternative fuels, such as hydrogen, are ...
    • An Optimization Framework for Tracking Droplets in Fire Water Spray Images 

      Lundberg, Joachim; Lysaker, Ola Marius (Conference object; Peer reviewed, 2015-11-25)
      The properties of the flow from fire water nozzles, like droplet size and velocity distribution within the spray, are known to influence the fire suppression efficiency. To analyze the flow properties, the water spray is ...
    • CFD study of a fluidized bed 

      Lundberg, Joachim (Master thesis, 2008)
      The aim of this thesis is to investigate the momentum exchange between the phases in a bubbling fluidized bed. The momentum exchange can be described by a drag model. Several drag models with different assumptions are ...
    • CFD Study of Particle Flow Patterns in a Rotating Cylinder Applying OpenFOAM and Fluent 

      Dissanayake, Susantha; Karunarathne, Sumudu S.; Lundberg, Joachim; Tokheim, Lars-André (Journal article; Peer reviewed, 2017)
      A rotating cylinder (RC) is a common type of reactor used in the industry, the most typical example being a cement kiln. The particle flow pattern inside such a unit is necessary for the mass and energy transfer, and this ...
    • Characterization of a medium velocity deluge nozzle for offshore installations 

      Lundberg, Joachim (Peer reviewed; Journal article, 2021)
      It is important to study the characteristics of the nozzle of the deluge spray to comply with the standards developed by the petroleum industry for offshore installations in Norway. Due to the stochastic nature of the ...
    • Complex Mesh Generation with OpenFOAM 

      Lande, Anne Marie (Master thesis, 2021)
      In the course Computational Fluid Dynamics at the University of South-Eastern Norway there have been some requests for more advanced geometry and meshing tools than the lectured blockMesh dictionary and meshing tool in the ...
    • Computational Fluid Dynamics Study of the Effects of Drill Cuttings on the Open Channel Flow 

      Welahettige, Prasanna Kumara Welahetti; Berg, Christian; Lundberg, Joachim; Lie, Bernt; Vågsæther, Knut (Peer reviewed; Journal article, 2019)
      A three-dimensional computational fluid dynamics (CFD) study was carried out for drilling fluid flow with drill cuttings in open channels. The flow is similar to the return flow when drilling, stream containing drilling ...
    • Detonation propagation in stratified reactant layers 

      Gaathaug, André Vagner; Bjerketvedt, Dag; Lundberg, Joachim; Vågsæther, Knut (Journal article; Peer reviewed, 2017)
      A numerical investigation of detonation propagation in stratified reactant layers is presented in this paper. It is baesed on the reactive Euler equations using a two step chemical kinetics approach. The numerical simulations ...
    • Evaluate the fire suppression parameters using FDS 

      Ramachandran, Rajath (Master thesis, 2022)
      It takes money, time, and energy to construct a fire and spray experimental rig. Due to advancement in technological development, it is easy to illustrate the experiment in computer simulation, especially by coding. The ...
    • Evaluation of Complex Spray Behaviors of Sprinkler Spray Using FDS 

      Ramachandran, Rajath; Lundberg, Joachim (Peer reviewed; Journal article, 2022)
      It takes money, time, and energy to set up an experimental grid to measure the effectiveness of fire suppression parameters. Therefore, computational fluid dynamics (CFD) is an alternative in all fields as consequences ...
    • Evaluation of De-oiler Performance Using Numerical CFD Technique 

      Hariyanti, Yovita (Master thesis, 2020)
      When producing oil from the reservoir, it comes together with water, gas, sand, and other impurities. Excluding gas, all of them are unexpected waste. The water or simply called produced water is the biggest problem due ...
    • Experimental investigation of artificial snow production in marginal geographic conditions 

      Nordbø, Malene (Master thesis, 2021)
      Dette arbeidet hadde som mål å utføre både litteratur og eksperimentell studie av kunstig snøproduksjon i marginale geografiske forhold. Det viktigste bak dannelsen av kunstig snø er vann som eksponeres for kald luft danner ...
    • Experimental study of primary atomization characteristics of sonic air-assist atomizers 

      Sikka, Raghav; Vågsæther, Knut; Bjerketvedt, Dag; Lundberg, Joachim (Journal article; Peer reviewed, 2021)
      The present study compares two twin-fluid atomizer concepts based on the airflow (shock waves) pattern obtained through shadowgraph imaging for atomization of water with a low air/water pressure supply. The research work ...
    • Explosion characteristics for Li-ion battery electrolytes at elevated temperatures 

      Henriksen, Mathias; Vågsæther, Knut; Lundberg, Joachim; Forseth, Sissel; Bjerketvedt, Dag (Peer reviewed; Journal article, 2019)
      Li-ion batteries are used in electronic devices and electric cars, yet they create safety concerns due to the possibility of the release of combustible materials. The electrolyte, one of the main components in a Li-ion ...
    • Image-based sizing techniques for fire water droplets 

      Lundberg, Joachim (Doctoral dissertations at TUC;2015:5, Doctoral thesis; Peer reviewed, 2015-11-12)
      The Norwegian petroleum industry has developed a standard for the technical safety of offshore installations (NORSOK S-001, 2008). When dimensioning accidental load with this standard, the deluge or fire water spray may ...
    • Laminar burning velocity of gases vented from failed Li-ion batteries 

      Henriksen, Mathias; Vaagsaether, K.; Lundberg, Joachim; Forseth, Sissel; Bjerketvedt, D. (Journal article; Peer reviewed, 2021)
      In the last decade, several fires and explosions caused by Li-ion batteries (LIBs) have been reported. This can be attributed to the thermal runaway and catastrophic failures of LIBs that release combustible gases, which ...
    • Laminar burning velocity of the dimethyl carbonate–air mixture formed by the Li-ion electrolyte solvent 

      Henriksen, Mathias; Vågsæther, Knut; Gaathaug, Andre Vagner; Lundberg, Joachim; Forseth, Sissel; Bjerketvedt, Dag (Peer reviewed; Journal article, 2020)
      If a Li-ion cell fails and the electrolyte leaks out into air, a flammable premixed gas cloud can be formed. The electrolyte combustion energy is 65–70% of the total energy content of the cell. The main objective of this ...
    • Numerical study of premixed gas explosion in a 1-m channel partly filled with 18650 cell-like cylinders with experiments 

      Henriksen, Mathias; Vågsæther, Knut; Lundberg, Joachim; Forseth, Sissel; Bjerketvedt, Dag (Peer reviewed; Journal article, 2022)
      Abused and defective Li-ion cells can cause a catastrophic failure of a Li-ion battery (LIB), leading to severe fires and explosions. In recent years, several numerical and experimental studies have been conducted on the ...
    • One-dimensional model of turbulent flow of non-Newtonian drilling mud in non-prismatic channels 

      Welahettige, Prasanna Kumara Welahetti; Lundberg, Joachim; Bjerketvedt, Dag; Lie, Bernt; Vågsæther, Knut (Peer reviewed; Journal article, 2019)
      One-dimensional model of non-Newtonian turbulent flow in a non-prismatic channel is challenging due to the difficulty of accurately accounting for flow properties in the 1-D model. In this study, we model the 1-D Saint–Venant ...
    • Proceedings of the Tenth International Seminar on Fire and Explosion Hazards, 22-27 May 2022, Oslo, Norway 

      Vågsæther, Knut; Lach, Agnieszka; Bradley, Derek; Lundberg, Joachim (Conference object; Peer reviewed, 2022)
      The Tenth International Seminar on Fire and Explosion Hazards (ISFEH10) organized in Oslo, Norway from 22 to 27 May 2022, is a place to share research on the physical effects of hazards, prediction methods for consequences, ...