Blar i Institutt for kjemisk prosessteknologi på forfatter "Jakobsen, Hugo Atle"
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A multifluid-PBE model for reactive bubbly flow: Applied to biofuel production via the Fischer- Tropsch synthesis operated in a slurry bubble column
Vik, Camilla Berge (Doktoravhandlinger ved NTNU;2018:291, Doctoral thesis, 2018)Summary of thesis: A multifluid-PBE model for reactive bubbly flow Although electricity is transforming the transportation sector, liquid fuels are believed to remain in demand in the near future. With the ... -
A multifluid-PBE model for simulation of mass transfer limited processes operated in bubble columns
Vik, Camilla Berge; Solsvik, Jannike; Hillestad, Magne; Jakobsen, Hugo Atle (Journal article, 2017)Modeling of reactive dispersed flows with interfacial mass transfer limitations require an accurate description of the interfacial area, mass transfer coefficient and the driving force. The driving force is given by the ... -
A Numerical Study of Newtonian and Non-Newtonian Fluid Flows Described in Curvilinear Coordinates
Bakke, Mari (Master thesis, 2021)En laminær, stasjonær strømning uten varmeoverføring i en kanal over et utvidet trinn (backwards facing step), ble løst ved bruk av finite volume method. Upwind differencing scheme og SIMPLE-algoritmen ble bruk til å ... -
A bubble coalescence kernel combining the characteristics of the film drainage, energy, and critical velocity models
Ozan, Suat Canberk; Solsvik, Jannike; Jakobsen, Hugo Atle (Peer reviewed; Journal article, 2023)A novel coalescence kernel with high predictive properties is constructed to be used within the population balance framework. The kernel includes the product of a collision frequency term and a novel binary coalescence ... -
Coalescence of fluid particles with deformable interfaces in non-Newtonian media
Fanebust, Maria; Ozan, Suat Canberk; Jakobsen, Hugo Atle (Peer reviewed; Journal article, 2021)The drainage of the non-Newtonian film between two approaching fluid particles are studied. The non-Newtonian continuous phase is a generalized Newtonian fluid that obeys the power-law model, and the deformable particle ... -
Combined Effect of Surfactant Presence and Gas Dissolution on Coalescence in Chemical- and Bioreactors
Hosen, Hauna Fathmadinda (Master thesis, 2021)In this work, coalescence of gas bubbles is investigated in the presence of gas dissolution and surfactants through a film drainage model. The study on dissolution is carried out for three cases considering low Pe, constant ... -
Determination of Breakage Parameters in Turbulent Fluid-Fluid Breakage
Herø, Eirik Helno; Forgia, Nicolas La; Solsvik, Jannike; Jakobsen, Hugo Atle (Journal article; Peer reviewed, 2019)Numerous sets of single‐particle breakage experiments are required in order to provide a sufficient database for improving the modeling of fluid particle breakage mechanisms. This work focuses on the interpretation of the ... -
Dissipation rate estimation in a rectangular shaped test section with periodic structure at the walls
La Forgia, Nicolas; Herø, Eirik Helno; Solsvik, Jannike; Jakobsen, Hugo Atle (Journal article; Peer reviewed, 2018)An experimental study of turbulent flow concerning the characterization of turbulence by two-point correlation and estimations of the turbulent dissipation rate is presented. The fluid used is deionized water and the test ... -
Experimental Investigation of Single Bubbles Rising in Stagnant Liquid: Statistical Analysis and Image Processing
Kure, Ida Kristine; Solsvik, Jannike; Jakobsen, Hugo Atle; La Forgia, Nicolas (Peer reviewed; Journal article, 2021)Despite the large effort devoted to the study of single bubbles rising in a stagnant liquid, the complex phenomena involved have resulted in a large scatter in the terminal velocity. Providing new experimental data where ... -
Experimental Investigations of Single Oil Droplet Breakage in a Turbulent Water Flow
Herø, Eirik Helno (Doctoral theses at NTNU;2021:340, Doctoral thesis, 2021)Multiphase flow and the transient behavior of the dispersed phase is important to numerous industrial applications. Predictive modeling of the dispersed phase would be beneficial in designing, for example, phase separation ... -
Film drainage and critical velocity of fluid particles in power-law fluids
Galantucci, Veronica; Ozan, Suat Canberk; Jakobsen, Hugo Atle (Journal article; Peer reviewed, 2024)This work studies the collision of fluid particles (bubbles or droplets) in non-Newtonian media whose viscosity obeys the power-law model, by analyzing the behavior of the drainage of the film between the particles. The ... -
Fluid Particle Coalescence: Film Drainage Modeling Including the Effect of Surface Rheology
Ozan, Suat Canberk (Doctoral theses at NTNU;2021:292, Doctoral thesis, 2021)Coalescence of fluid particles is an important phenomenon that plays a significant role in a wide range of natural and industrial processes. This work focuses on the film drainage models employed in coalescence modeling, ... -
An hp-adaptive quadrature method for irregular integrands: Application to the population balance equation birth term
Engh, Mathias; Solsvik, Jannike; Jakobsen, Hugo Atle (Peer reviewed; Journal article, 2019)The solution of the population balance equation requires the integration of several source terms. In the numerical weighted residuals methods, Gaussian quadrature is a natural candidate for numerical integration. Previous ... -
Interface mass transfer and properties of bubbly flows in a column with Newtonian and non-Newtonian liquids
Kure, Ida Kristine; Solsvik, Jannike; Jakobsen, Hugo Atle (Peer reviewed; Journal article, 2023)The mass transfer of gas–liquid systems is commonly reported through the volumetric mass transfer coefficient, , which is a function of several complex phenomena. To optimize the rate of mass transfer, increased knowledge ... -
Interfacial mass transfer limitations in the Fischer-Tropsch synthesis operated in a slurry bubble column at industrial conditions
Vik, Camilla Berge; Solsvik, Jannike; Hillestad, Magne; Jakobsen, Hugo Atle (Journal article; Peer reviewed, 2018)At high catalyst volume fractions the Fischer-Tropsch synthesis (FTS) operated in a slurry bubble column (SBC) is driven into the mass transfer limited regime. This study utilized literature models for the gas-liquid mass ... -
Interfacial mass transfer limitations of the Fischer-Tropsch synthesis operated in a slurry bubble column reactor at industrial conditions
Vik, Camilla Berge; Solsvik, Jannike; Hillestad, Magne; Jakobsen, Hugo Atle (Journal article; Peer reviewed, 2018)At high catalyst volume fractions the Fischer-Tropsch synthesis (FTS) operated in a slurry bubble column (SBC) is driven into the mass transfer limited regime. This study utilized literature models for the gas-liquid mass ... -
Investigation of coalescence through film drainage modeling in chemical- and bioreactors with non-Newtonian continuous media
Fanebust, Maria (Master thesis, 2021)Denne masteroppgaven tar for seg dreneringen av en ikke-Newtonsk film innfanget mellom to fluidpartikler for å modellere koalesens i kjemiske reaktorer og bioreaktorer. I litteraturen finnes det mange studier som utforsker ... -
Machine Learning and Image Processing for the Study of Fluid Particle Breakage in Turbulent Flow
Ågotnes, Joachim (Master thesis, 2020)Hovedformålet med denne oppgaven er å lage maskinlæringsmodeller for bruk i en allerede eksisterende bildeanalysekode for å kunne spore oljedråper i en turbulent strøm av vann. I tillegg, har prosjektet som mål å beskrive ... -
Measuring gas-liquid mass transfer in very small bubbles
Kindsbækken, Fredrik (Master thesis, 2018)Modern industry is always striving for process optimization and reducing emissions, which in many cases requires an accurate modeling of interfacial gas-liquid mass transfer. To study the interfacial gas-liquid mass ... -
Modeling and Simulation of Chemical Looping Combustion Using a Copper-Based Oxygen Carrier in a Double-Loop Circulating Fluidized Bed Reactor System
Zhang, Yuanwei; Langørgen, Øyvind; Saanum, Inge; Chao, Zhongxi; Jakobsen, Hugo Atle (Journal article; Peer reviewed, 2017)In this work, a computational fluid dynamics simulator has been developed for a novel double-loop circulating fluidized bed reactor which is used for a chemical looping combustion process. The simulator is implemented in ...