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  1. No Access

    Article

    Family-Vicsek scaling of detachment fronts in granular Rayleigh-Taylor instabilities during sedimentating granular/fluid flows

    When submillimetric particles are confined in a fluid such that a compact cluster of particles lie above the clear fluid, particles will detach from the lower boundary of the cluster and form an unstable sepa...

    J. L. Vinningland, R. Toussaint, M. Niebling… in The European Physical Journal Special Topi… (2012)

  2. No Access

    Article

    Stick slip displacement of confined granular mixtures: Bubble expansion

    When a compressible gas displaces a granular mixture in a quasi 2D space, friction causes stick slip motion. A localized slip event at the interface allows expansion of the compressed gas and a sudden forward...

    B. Sandnes, E. G. Flekkøy, K. J. Måløy in The European Physical Journal Special Topics (2012)

  3. Article

    Open Access

    Patterns and flow in frictional fluid dynamics

    Pattern-forming processes in simple fluids and suspensions have been studied extensively, and the basic displacement structures, similar to viscous fingers and fractals in capillary dominated flows, have been ...

    B. Sandnes, E.G. Flekkøy, H.A. Knudsen, K.J. Måløy, H. See in Nature Communications (2011)

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  4. No Access

    Article

    Effects of Pressure Oscillations on Drainage in an Elastic Porous Medium

    The effects of seismic stimulation on the flow of two immiscible fluids in an elastic synthetic porous medium is experimentally investigated. A wetting fluid is slowly evacuated from the medium, while a pressu...

    M. Jankov, G. Løvoll, H. A. Knudsen, K. J. Måløy, R. Planet… in Transport in Porous Media (2010)

  5. No Access

    Chapter and Conference Paper

    Interactions of magnetic holes in ferrofluid layers

    Nonmagnetic microspheres in a ferrofluid layer interact as dipoles in an external magnetic field. With a constant field normal to the layer and an oscillating in-plane field, the spheres stabilize at fixed sep...

    R. Toussaint, J. Akselvoll, G. Helgesen, E. G. Flekkøy… in Surface and Colloid Science (2004)

  6. No Access

    Chapter and Conference Paper

    Self-Assembly and Dynamics of Magnetic Holes

    Nonmagnetic particles in magnetized ferrofluids have been denoted magnetic holes and are in many ways ideal model systems to test various forms of particle self assembly and dynamics. Some case studies to be r...

    A. T. Skjeltorp, J. Akselvoll… in Forces, Growth and Form in Soft Condensed … (2004)

  7. No Access

    Chapter

    Modeling Granular Flows

    We study a variety of granular flows and some models by means of a combination of simulations, experiments and analytic considerations. The models as well as the physical systems are governed by the presence o...

    E G. Flekkøy, S. Mcnamara, K. J. Måløy in Soft Condensed Matter: Configurations, Dyn… (2000)

  8. No Access

    Article

    Hydrodynamic interactions in self similar structures, such as polymers

    We study the hydrodynamic properties of polymers and more generally self-similar structures using a new recursion model. The hydrodynamic interaction between monomers is modeled by the standard Green's functio...

    P. Dommersnes, S. Straumsnes, E.G. Flekkøy… in The European Physical Journal B - Condense… (1999)

  9. No Access

    Chapter

    Granular Flow in Hoppers and Tubes

    We have studied the effect of gas-grain interaction on the flow of sand for two different experiments. The first experiment deals with the intermittent flow observed in a closed hour-glass. The intermittency r...

    K. J. Måløy, T. Le Pennec, E. G. Flekkøy, D. Bideau… in Physics of Dry Granular Media (1998)

  10. No Access

    Article

    Lattice gas simulations of osmosis

    An analysis of the phenomenon of osmosis within the lattice gas model is presented. The model considered is a two-species version of the Frisch-Hasslacher-Pomeau model with rest particles and a semipermeable m...

    E. G. Flekkøy, J. Feder, T. Jøssang in Journal of Statistical Physics (1992)