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Frictional fluid instabilities shaped by viscous forces

Author

Listed:
  • Dawang Zhang

    (Swansea University)

  • James M. Campbell

    (Swansea University
    University of Oslo)

  • Jon A. Eriksen

    (University of Oslo)

  • Eirik G. Flekkøy

    (University of Oslo
    Norwegian University of Science and Technology)

  • Knut Jørgen Måløy

    (University of Oslo
    Norwegian University of Science and Technology)

  • Christopher W. MacMinn

    (University of Oxford)

  • Bjørnar Sandnes

    (Swansea University)

Abstract

Multiphase flows involving granular materials are complex and prone to pattern formation caused by competing mechanical and hydrodynamic interactions. Here we study the interplay between granular bulldozing and the stabilising effect of viscous pressure gradients in the invading fluid. Injection of aqueous solutions into layers of dry, hydrophobic grains represent a viscously stable scenario where we observe a transition from growth of a single frictional finger to simultaneous growth of multiple fingers as viscous forces are increased. The pattern is made more compact by the internal viscous pressure gradient, ultimately resulting in a fully stabilised front of frictional fingers advancing as a radial spoke pattern.

Suggested Citation

  • Dawang Zhang & James M. Campbell & Jon A. Eriksen & Eirik G. Flekkøy & Knut Jørgen Måløy & Christopher W. MacMinn & Bjørnar Sandnes, 2023. "Frictional fluid instabilities shaped by viscous forces," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-38648-6
    DOI: 10.1038/s41467-023-38648-6
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    1. M. Riedel & M. Scherwath & M. Römer & M. Veloso & M. Heesemann & G. D. Spence, 2018. "Distributed natural gas venting offshore along the Cascadia margin," Nature Communications, Nature, vol. 9(1), pages 1-14, December.
    2. A. Parmigiani & S. Faroughi & C. Huber & O. Bachmann & Y. Su, 2016. "Bubble accumulation and its role in the evolution of magma reservoirs in the upper crust," Nature, Nature, vol. 532(7600), pages 492-495, April.
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