Now showing items 1-20 of 114

    • State of the art in mapping schemes for dilute and dense Euler-Lagrange simulations 

      Radl, Stefan; Gonzales, Begona C.; Goniva, Christoph; Pirker, Stefan (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      Euler-Lagrange (EL) simulations are an extremely important tool for academia and industry to better understand gas-particle flows. We present simulation results for various gas-particle flow configurations using a variety ...
    • Modelling argon injection in continuous casting of steel by the DPM+VOF technique 

      Ramirez Lopez, Pavel Ernesto; Jalali, Pooria Nazem; Sjöström, Ulf; Nilsson, Christer (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      An advanced numerical model able to predict transiently the multiphase flow, heat transfer and solidification in a Continuous Casting mould based on the Volume of Fluid Method (VOF) in combination with the tracking of ...
    • Drop breakup modelling in turbulent flows 

      Lalanne, Benjamin; Tanguy, Sebastien; Vejrazka, Jiri; Masbernat, Olivier; Risso, Frederic (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      This paper deals with drop and bubble break-up modelling in turbulent flows. We consider the case where the drop/bubble slip velocity is smaller than or of the order of the turbulent velocity scales, or when the drop/bubble ...
    • A six chemical species CFD model of alumina reduction in a Hall-Héroult cell 

      Witt, Peter J.; Feng, Yuqing; Snook, Graeme A.; Eick, Ingo; Cooksey, Mark (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      The industrial process for producing primary aluminium metal is the reduction of powdered alumina in a Hall-Héroult reduction cell. These cells operate at temperatures above 940 °C with a highly corrosive electrolyte making ...
    • Numerical model for flow in rocks composed of materials of different permeability 

      Li, R.R.; Yang, Y.S.; Pereira, G.G.; Taylor, J.A.; Clennell, M.B.; Zou, C. (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      In the oil and gas industry permeability measurements on rock samples give an indication of the capacity to produce the output (oil/gas etc). Permeability of small samples can be derived from x-ray Computed Tomography (CT) ...
    • Lattice Boltzmann simulations applied to understanding the stability of multiphase interfaces 

      Periera, Gerald G. (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      Multiphase flow occurs in a multitude of industrial and technological situations ranging from oil and minerals recovery to microfluidics and nanofluidics. In all these cases we are interested in modelling the flow of two ...
    • Comparing Euler-Euler and Euler-Lagrange based modelling approaches for gas-particle flows 

      Braun, Markus; Lamert, Markus; Ozarkar, Shailesh; Sanyal, Jay (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      Comparative assessment of Euler-Euler and Euler-Lagrange modelling approaches for gas-particle flows is performed by comparing their predictions against experimental data of two fluidization challenge problems put forth ...
    • Modelling of particle transport and bed-formation in pipelines 

      Narayanan, C.; Gupta, S.; Lakehal, D. (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      Particle transport and bed formation in gas and condensate pipelines could occur under various flow regimes, from dilute flows to high mass-loading conditions, to conditions where particle beds form in the pipeline. Proper ...
    • Prediction of mass transfer between liquid steel and slag at continuous casting mold 

      Gardin, Pascal; Gauthier, Segolene; Vincent, Stephane (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      For the prediction of steel desulphurization and dephosphorization or the evolution of slag composition at continuous casting mould, mass transfer between two immiscible fluids in a turbulent situation should be calculated. ...
    • Modelling of the Ferrosilicon furnace: effect of boundary conditions and burst 

      Panjwani, Balram; Olsen, Jan Erik; Wittgens, Bernd (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      A by-product from the ferrosilicon process is process gas which escapes into the furnace hood were it reacts with air. The process gas mainly consists of CO with some SiO and moisture. Modeling the gas behavior inside the ...
    • Governing physics of shallow and deep subsea gas release 

      Olsen, Jan Erik; Skjetne, Paal (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      A modelling concept for studying the resulting bubble plume from a subsea gas release is presented. Simulation results show good consistency with available experimental data. The modelling concept is applied to assess the ...
    • Cool down simulations of subsea equipment 

      Jensen, Atle; Grafsrønningen, Stig (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      Experiments and numerical conjugate heat transfer simulations are performed on a simple T-pipe geometry. The T-pipe geometry is partially insulated and mimics subsea equipment which is subject to cool-down after a production ...
    • The parametric sensitivity of fluidized bed reactor simulations carried out in different flow regimes 

      Cloete, Schalk; Cloete, Jan H.; Johansen, Stein Tore; Amini, Shahriar (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      Fluidized bed simulations carried out within the Kinetic Theory of Granular Flows framework utilize a number of model coefficients which are strongly case dependent and difficult to determine accurately. The most important ...
    • A multi-scale model for oxygen carrier selection and reactor design applied to packed bed chemical looping combustion 

      Tabib, Mandar; Morud, John; Johansen, Stein Tore; Amini, Shahriar (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      Proper selection of a catalyst shape (or a particle shape) can improve the performance of a gas-solid packed bed reactor. The particle shape affects the packing structure and the transport phenomena within the packed bed. ...
    • An enhanced front tracking method featuring volume conservative remeshing and mass transfer 

      Roghair, Ivo; Van Sint Annaland, Martin; Kuipers, Hans (SINTEF Proceedings;1, Chapter; Conference object, 2015)
    • Modelling thermal effects in the molten iron bath of the HIsmelt reduction vessel 

      Witt, Peter J.; Feng, Yuqing; Davis, Mark P. (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      Over a thirty year period the HIsmelt process has been developed as an alternative to the traditional blast furnace for the production of pig iron. This process involves the injection of fine iron ore and non-coking coal ...
    • CFD modeling of oil-water separation efficiency in three-phase separators 

      Oshinowo, Lanre; Elsaadawy, Ehab; Vilagines, Regis (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      Variations in oil properties or water content influence the rate of crude oil-water separation. This presents a challenge for separator operations when conditions change as fields mature, and for the design of new internals ...
    • CFD modelling of gas entrainment at a propagating slug front 

      Hua, Jinsong; Nordbø, Jørgen; Foss, Martin (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      Slug flow is encountered frequently during multiphase fluid transport in pipes. The gas entrainment process at a slug front significantly affects the hydrodynamic behaviour of slug flows. Due to the complexity of the flow ...
    • A Baseline model for monodisperse bubbly flows 

      Rzehak, Roland; Krepper, Eckhard; Ziegenhein, Thomas; Lucas, Dirk (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      For practical applications the Euler-Euler two-fluid model relies on suitable closure relations describing interfacial exchange processes. The quest for models with a broad range of applicability allowing predictive ...
    • Pragmatic CFD modelling approaches to complex multiphase processes 

      Schwarz, M. Philip; Feng, Yuqing (SINTEF Proceedings;1, Chapter; Conference object, 2015)
      Modelling of complex multiphase processes in the minerals and energy resources industries requires a balance between the pursuit for detail and recognition of computational resource limitations, if it is to lead to effective ...