Browsing by Author "Fossum, Hannibal Eie"
Now showing items 1-6 of 6
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Anisotropy and shear-layer edge dynamics of statistically unsteady,stratified turbulence
Wingstedt, Emma My Maria; Fossum, Hannibal Eie; Reif, Bjørn Anders Pettersson; Werne, Joseph (2015)Direct numerical simulation data of an evolving Kelvin-Helmholtz instability have been analyzed in order to characterize the dynamic and kinematic response of shear-generated turbulent flow to imposed stable stratification. ... -
Assessment of the dispersion of Legionella-containing aerosols from a biological treatment plant
Blatny, Janet Martha; Tutkun, Murat; Fossum, Hannibal Eie; Skogan, Gunnar; Fykse, Else-Marie; Andreassen, Øyvind; Waagen, Viggo; Reif, Bjørn Anders Pettersson (2011)Legionella was detected in aeration ponds (biological treatment plant) at Borregaard Ind. Ltd., Norway, and in air samples harvested directly above these ponds. Since 2005, three outbreaks of legionellosis occurred within ... -
Evaluation of safety distances for storage of explosive materials using a combination of thermochemical computations and CFD
Fossum, Hannibal Eie; Osnes, Andreas Nygård; Kristensen, Tor Erik (2019-01-14)A novel approach to calculating TNT equivalencies and safety distances for explosives, using a combination of thermochemical computations and computational fluid dynamics, is presented. This enables the estimation of safety ... -
A model for the viscous dissipation rate in stably stratified, sheared turbulence
Fossum, Hannibal Eie; Wingstedt, Emma My Maria; Reif, Bjørn Anders Pettersson (2013)A model for the turbulence dissipation rate in stably stratified shear turbulence is developed and validated. The functional dependence of the model is derived from first principles and it represents a conceptually new ... -
Numerical simulation of hydrogen dispersion in an open-ended rectangular channel
Fossum, Hannibal Eie; Åkervik, Espen; Henriksen, Mathias; Bjerketvedt, Dag (2024-11-26)In this work, large-eddy simulations of hydrogen dispersion from turbulent subsonic hydrogen-gas emissions in a 5.8 × 0.9 × 0.8 m open-ended channel are described. Such numerical modeling of hydrogen-related processes ... -
On the Use of Computational Fluid Dynamics to Investigate Aerosol Dispersion in an Industrial Environment: A Case Study
Fossum, Hannibal Eie; Reif, Bjørn Anders Pettersson; Tutkun, Murat; Gjesdal, Thor (2012)Aerosol dispersion in the area surrounding an existing biological treatment facility is investigated using large-eddy simulation, with the objective to investigate the applicability of computational fluid dynamics to complex ...