{
  "id": "2112.14672",
  "version": "v1",
  "published": "2021-12-29T17:43:42.000Z",
  "updated": "2021-12-29T17:43:42.000Z",
  "title": "Enhancement of drag and mixing in a dilute solution of rodlike polymers at low Reynolds numbers",
  "authors": [
    "Leonardo Puggioni",
    "Guido Boffetta",
    "Stefano Musacchio"
  ],
  "comment": "18 pages, 13 figures",
  "doi": "10.1103/PhysRevFluids.7.083301",
  "categories": [
    "physics.flu-dyn"
  ],
  "abstract": "We study the dynamics of a dilute solution of rigid rodlike polymers in a viscous fluid at low Reynolds number by means of numerical simulations of a simple rheological model. We show that the rotational dynamics of polymers destabilizes the laminar flow and causes the emergence of a turbulent-like chaotic flow with a wide range of active scales. This regime displays an increased flow resistance, corresponding to a reduced mean flow at fixed external forcing, as well as an increased mixing efficiency. The latter effect is quantified by measuring the decay of the variance of a scalar field transported by the flow. By comparing the results of numerical simulations of the model in two- and three-dimensions, we show that the phenomena observed are qualitatively independent on the dimensionality of the space.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-12-29T17:43:42.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "low reynolds number",
      "dilute solution",
      "rodlike polymers",
      "enhancement",
      "numerical simulations"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 18,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}