{
  "id": "1601.03529",
  "version": "v1",
  "published": "2016-01-14T09:46:50.000Z",
  "updated": "2016-01-14T09:46:50.000Z",
  "title": "Inverse Saffman-Taylor experiments with particles lead to capillarity driven fingering instabilities",
  "authors": [
    "Ilyesse Bihi",
    "Michael Baudoin",
    "Jason E. Butler",
    "Christine Faille",
    "Farzam Zoueshtiagh"
  ],
  "categories": [
    "physics.flu-dyn",
    "cond-mat.soft"
  ],
  "abstract": "Using air to displace a viscous fluid contained in Hele-Shaw cell can create a fingering pattern at the interface between the fluids, if the capillary number exceeds a critical value. This Saffman-Taylor instability is revisited for the inverse case of a viscous fluid displacing air, when partially wettable hydrophilic particles are lying on the walls. Though the inverse case is otherwise stable, the presence of the particles results in a fingering instability at low capillary number. This capillary-driven instability is driven-by the integration of particles into the interface which results from the minimization of the interfacial energy. Both axisymmetric and rectangular geometries are considered in order to quantify this phenomenon.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-01-14T09:46:50.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "fingering instability",
      "capillarity driven fingering instabilities",
      "inverse saffman-taylor experiments",
      "inverse case",
      "viscous fluid"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2016arXiv160103529B"
    }
  }
}