{
  "id": "1712.04895",
  "version": "v1",
  "published": "2017-12-13T18:03:01.000Z",
  "updated": "2017-12-13T18:03:01.000Z",
  "title": "Experimental investigation of the wake behind a rotating sphere",
  "authors": [
    "Maciej Skarysz",
    "Jacek Rokicki",
    "Sophie Goujon-Durand",
    "Jose Eduardo Wesfreid"
  ],
  "categories": [
    "physics.flu-dyn"
  ],
  "abstract": "The wake behind a sphere, rotating about an axis aligned with the streamwise direction, has been experimentally investigated in a low-velocity water tunnel using LIF visualizations and PIV measurements. The measurements focused on the evolution of the flow regimes that appear depending on two control parameters, namely the Reynolds number $Re$ and the dimensionless rotation or swirl rate $\\Omega$, which is the ratio of the maximum azimuthal velocity of the body to the free stream velocity. In the present investigation, we cover the range of $Re$ smaller than 400 and $\\Omega$ from 0 and 4. Different wakes regimes such as an axisymmetric flow, a low helical state and a high helical mode are represented in the ($Re$, $\\Omega$) parameter plane.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-12-13T18:03:01.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "experimental investigation",
      "rotating sphere",
      "low-velocity water tunnel",
      "maximum azimuthal velocity",
      "free stream velocity"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}