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Showing 1–3 of 3 results
Advanced filters: Author: Bjørnar Sandnes Clear advanced filters

  • Fingering patterns form spontaneously when a non-wetting viscous liquid displaces a dry granular mixture in a confined flow cell. The authors show how these patterns are controlled by the balance between viscous, capillary, and frictional forces.

    • Dawang Zhang
    • James M. Campbell
    • Bjørnar Sandnes
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-10

  • Granular materials exhibit complex behaviors in various flow regimes, with fluid-driven dynamics leading to phenomena like erosion and pattern formation. Here, the authors experimentally investigate flow regimes in a submerged quasi-two-dimensional fluid-driven silo, demonstrating wormhole-like instabilities and providing insights into how gravitational and viscous effects dictate the observed instabilities.

    • Miles L. Morgan
    • David W. James
    • Bjørnar Sandnes
    ResearchOpen Access
    Communications Physics
    Volume: 8, P: 1-7

  • The microscopic mechanisms underlying the discontinuous shear thickening transition in dense granular systems are still under debate. Here, the authors explore this transition by characterizing the shape of invasion patterns in Hele-Shaw cell experiments with confined cornstarch suspensions.

    • Deren Ozturk
    • Miles L. Morgan
    • Bjørnar Sandnes
    ResearchOpen Access
    Communications Physics
    Volume: 3, P: 1-9