Browsing Bergen Open Research Archive by Author "Skjold, Trygve"
Now showing items 1-12 of 12
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Blind-prediction: estimating the consequences of vented hydrogen deflagrations for inhomogeneous mixtures in 20-foot ISO containers
Skjold, Trygve; Hisken, Helene; Bernard, Laurence; Mauri, Lorenzo; Atanga, Gordon; Lakshmipathy, Sunil; Lucas, Melodia; Carcassi, Marco; al., et (Peer reviewed; Journal article, 2019-09)This paper summarises the results from a blind-prediction benchmark study for models used for estimating the consequences of vented hydrogen deflagrations, as well as for users of such models. The work was part of the HySEA ... -
Computational fluid dynamics simulations of hydrogen releases and vented deflagrations in large enclosures
Lucas, Melodia; Hisken, Helene; Skjold, Trygve (Peer reviewed; Journal article, 2020-01)This paper presents model predictions obtained with the CFD tool FLACS for hydrogen releases and vented deflagrations in containers and larger enclosures. The paper consists of two parts. The first part compares experimental ... -
Flame propagation in dust clouds. Numerical simulation and experimental investigation
Skjold, Trygve (Doctoral thesis, 2014-06-27)This dissertation describes the development and validation of a methodology for estimating the consequences of accidental dust explosions in complex geometries. The approach adopted entails the use of results from standardized ... -
Flame Propagation in Dust Clouds: Challenges for Model Validation
Skjold, Trygve (Conference object; Peer reviewed, 2010)Modelling of industrial dust explosions poses a formidable challenge to researchers and safety engineers. Whereas current best practice with respect to modelling the consequences of vapour cloud explosions in the petroleum ... -
Modelling of vented dust explosions – empirical foundation and prospects for future validation of CFD codes
Skjold, Trygve; Wingerden, Kees van; Hansen, Olav R.; Eckhoff, Rolf Kristian (IChemE Symposium Series;154, Conference object; Peer reviewed, 2008)Explosion venting is the most frequently used method for mitigating the effects from accidental dust explosions in the process industry. Optimal design of vent systems and credible execution of risk assessments in powder ... -
Possibilities, limitations, and the way ahead for dust explosion modelling
Skjold, Trygve; Larsen, Ø.; Hansen, Olav R. (IChemE Symposium Series;151, Conference object; Peer reviewed, 2006)The purpose of the present paper is threefold. First, a brief review of modelling, main results, and preliminary conclusions from the DESC project are presented; current capabilities and limitations of the DESC code are ... -
Selected aspects of turbulence and combustion in 20-litre explosion vessels : development of experimental apparatus and experimental investigation
Skjold, Trygve (Master thesis, 2003) -
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. (Conference object; 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 Effect of Release of Pressure and Dust Lifting on Coal Dust Explosions
Skjold, Trygve (Conference object; Peer reviewed, 2007)Dispersion of accumulated layers of combustible dust by turbulent flow or shock waves ahead of a propagating flame can play an important role for explosion propagation in coal mines. In 1924, Greenwald and Wheeler investigated ... -
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 object; Peer reviewed, 2005) -
Simulating vented hydrogen deflagrations: Improved modelling in the CFD tool FLACS-hydrogen
Melodia, Lucas; Atanga, Gordon; Hisken, Helene; Mauri, Lorenzo; Skjold, Trygve (Journal article; Peer reviewed, 2021)This paper describes validation of the computational fluid dynamics tool FLACS-Hydrogen. The validation study focuses on concentration and pressure data from vented deflagration experiments performed in 20-foot shipping ... -
Vented hydrogen deflagrations in weak enclosures: Experimental results and implications for industrial practice
Skjold, Trygve (Peer reviewed; Journal article, 2019)It is common practice in industry to install equipment for hydrogen energy applications in containers and smaller enclosures. Fires and explosions represent a significant hazard for such installations (Skjold et al., 2018), ...