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    Tracking airborne Legionella and Legionella pneumophila at a biological treatment plant 

    Blatny, Janet Martha; Reif, Bjørn Anders Pettersson; Skogan, Gunnar; Andreassen, Øyvind; Høiby, Ernst Arne; Ask, Eirik; Waagen, Viggo; Aanonsen, Dag; Aaberge, Ingeborg Aase S.; Caugant, Dominique A (2008)
    Biological treatment plants are frequently used to degrade organic substances in wastewater from wood refinement processes. Aeration ponds in such plants provide an optimal growth environment for many microorganisms, ...

    Consequence assessment of indoor dispersion of sarin-A hypothetical scenario 

    Endregard, Monica; Reif, Bjørn Anders Pettersson; Vik, Thomas; Busmundrud, Odd (2010)
    The objective of this study is to provide a hypothetical scenario of indoor dispersion of the highly toxic nerve agent sarin in a large building, which can be used as a starting point for discussion, planning, training and ...

    Post-blast explosive residue-a review of formation and dispersion theories and experimental research 

    Abdul-Karim, Nadia; Blackman, Christopher S.; Gill, Philip P.; Wingstedt, Emma My Maria; Reif, Bjørn Anders Pettersson (2014)
    The presence of undetonated explosive residues following high order detonations is not uncommon, however the mechanism of their formation, or survival, is unknown. The existence of these residues impacts on various scenarios, ...

    Large-eddy simulation of dense gas dispersion over a simplified urban area 

    Wingstedt, Emma My Maria; Osnes, Andreas Nygård; Åkervik, Espen; Eriksson, Daniel; Reif, Bjørn Anders Pettersson (2017)
    Dispersion of neutral and dense gas over a simplified urban area, comprising four cubes, has been investigated by the means of large-eddy simulations (LES). The results have been compared to wind tunnel experiments and ...

    Large-eddy simulations of dense-gas dispersion within a high-Reynolds number turbulent boundary layer 

    Wingstedt, Emma My Maria; Vartdal, Magnus; Reif, Bjørn Anders Pettersson (2017)
    Large-eddy simulations of flows over a backward-facing step with release of four different gases with increasing densities have been performed. The results have been analysed with particular emphasis on the part of the ...

    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 ...

    Flow noise reduction from superhydrophobic surfaces 

    Elboth, Thomas; Reif, Bjørn Anders Pettersson; Andreassen, Øyvind; Martell, Michael B. (2012)
    This work investigates how a highly (super)hydrophobic surface can be used to reduce turbulence-generated drag and noise on a towed streamer cable. The work is done by analyzing full-scale drag and flow noise measurements ...

    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 ...

    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. ...

    Computational analysis of shock-induced flow through stationary particle clouds 

    Osnes, Andreas Nygård; Vartdal, Magnus; Omang, Marianne Gjestvold; Reif, Bjørn Anders Pettersson (2019-03-22)
    We investigate the shock-induced flow through random particle arrays using particle-resolved Large Eddy Simulations for different incident shock wave Mach numbers, particle volume fractions and particle sizes. We analyze ...
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    Reif, Bjørn Anders Pettersson (12)
    Wingstedt, Emma My Maria (5)Fossum, Hannibal Eie (4)Andreassen, Øyvind (3)Osnes, Andreas Nygård (3)Vartdal, Magnus (3)Blatny, Janet Martha (2)Omang, Marianne Gjestvold (2)Skogan, Gunnar (2)Tutkun, Murat (2)... View MoreDate Issued2010 - 2020 (11)2008 - 2009 (1)

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