{
  "id": "1609.08532",
  "version": "v1",
  "published": "2016-09-27T17:01:30.000Z",
  "updated": "2016-09-27T17:01:30.000Z",
  "title": "Elastic Turbulence in Channel Flows at Low Reynolds number",
  "authors": [
    "Boyang Qin",
    "Paulo E. Arratia"
  ],
  "comment": "12 pages, 4 figures",
  "categories": [
    "physics.flu-dyn",
    "nlin.CD"
  ],
  "abstract": "We experimentally demonstrate the existence of elastic turbulence in straight channel flow at low Reynolds numbers. Velocimetry measurements show non-periodic fluctuations in the wake of curved cylinders as well as in a parallel shear flow region. The flow in these two locations of the channel is excited over a broad range of frequencies and wavelengths, consistent with the main features of elastic turbulence. However, the decay of the initial elastic turbulence around the cylinders is followed by a growth downstream in the straight region. The emergence of distinct flow characteristics both in time and space suggests a new type of elastic turbulence, markedly different from that near the curved cylinders. We propose a self-sustaining mechanism to explain the sustained fluctuations in the parallel shear region.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-09-27T17:01:30.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "low reynolds number",
      "parallel shear flow region",
      "initial elastic turbulence",
      "curved cylinders",
      "parallel shear region"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}