Blar i Bergen Open Research Archive på forfatter "Arntzen, Bjørn Johan"
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CFD Analysis of Explosions with Hydrogen-Methane-Air Mixtures in Congested Geometries
Lucas, Melodia Perez; Hisken, Helene; Skjold, Trygve; Arntzen, Bjørn Johan (Journal article; Peer reviewed, 2022)Hydrogen is an enabler for de-carbonising the energy system in Europe by 2050. In the UK, several projects are investigating the feasibility of gradually blending hydrogen into the natural gas pipelines with the aim to ... -
CFD modelling of hydrogen and hydrogen-methane explosions – Analysis of varying concentration and reduced oxygen atmospheres
Lucas, Melodia Perez; Hisken, Helene; Skjold, Trygve; Arntzen, Bjørn Johan; van Wingerden, Kees (Journal article; Peer reviewed, 2023)This paper evaluates the predictive capabilities of the advanced consequence model FLACS-CFD for deflagrations involving hydrogen. Two modelling approaches are presented: the extensively validated model system originally ... -
Innføring av nytt 1. semester kurs, PTEK100 Introduksjon til Petroleums- og Prosessteknologi
Arntzen, Bjørn Johan (UPED-skrift nr. 1/2004, Working paper, 2004)Bjørn Arntzen (Det matematisk- naturvitenskapelige fakultet) har ansvaret for et nytt 1.semesterkurs: Introduksjon til Petroleums- og Prosessteknologi, PTEK 100. Han beskriver hensikten med emnet og de valg som måtte taes ... -
Simplified modelling of explosion propagation by dust lifting in coal mines
Skjold, Trygve; Eckhoff, Rolf Kristian; Arntzen, Bjørn Johan; Lebecki, K.; Dyduch, Z.; Klemens, R.; Zydak, P. (Chapter; Peer reviewed, 2007)Dispersion of accumulated layers of combustible dust by turbulent flow or shock waves ahead of the propagating flame may sustain explosion propagation in coal mine galleries and other industrial facilities. The mechanisms ... -
Simulating the Influence of Obstacles on Accelerating Dust and Gas Flames
Skjold, Trygve; Pu, Y. K.; Arntzen, Bjørn Johan; Hansen, Olav R.; Storvik, Idar E.; Taraldset, Ole Jacob; Eckhoff, Rolf Kristian (Conference lecture, 2005) -
Visualization of Unsteady Flow in a Multistage Helico-Axial Pump
Gundersen, Ted Ørjan Seim; Moënne-Loccoz, Victor; Dupoiron, Marine; Torbergsen, Erik Andre; Balakin, Boris; Arntzen, Bjørn Johan; Hoffmann, Alex Christian (Journal article, 2023)Helico-axial pumps are designed to pump mixtures of gas and liquid. Secondary flows and rotor-stator interactions are known to add complexity to the flow field in unshrouded axial-flow turbomachinery. Here we use a high-speed ...