{
  "annotation_id": "5096a796-bb08-4fcf-a5fe-1ad44979d523",
  "date_created": "2026-03-02T18:00:52.888000Z",
  "date_modified": "2026-03-02T18:00:52.888000Z",
  "file_hash": "87fc416fdad28bb1cd2887ebfa98fad65acb7b37ba03aab83879344d451449e1",
  "private": false,
  "record": {
    "abstract": "Numerical studies of a kinematic dynamo based on von Karman type flows\nbetween two counterrotating disks in a finite cylinder are reported. The flow\nhas been optimized using a water model experiment, varying the driving\nimpellers configuration. A solution leading to dynamo action for the mean flow\nhas been found. This solution may be achieved in VKS2, the new sodium\nexperiment to be performed in Cadarache, France. The optimization process is\ndescribed and discussed, then the effects of adding a stationary conducting\nlayer around the flow on the threshold, on the shape of the neutral mode and on\nthe magnetic energy balance are studied. Finally, the possible processes\ninvolved into kinematic dynamo action in a von Karman flow are reviewed and\ndiscussed. Among the possible processes we highlight the joint effect of the\nboundary-layer radial velocity shear and of the Ohmic dissipation localized at\nthe flow/outer-shell boundary.",
    "arxiv_id": "physics/0411213",
    "authors": [
      "Florent Ravelet",
      "Arnaud Chiffaudel",
      "Fran\u00e7ois Daviaud",
      "Jacques L\u00e9orat"
    ],
    "categories": [
      "physics.flu-dyn"
    ],
    "doi": "10.1063/1.2130745",
    "title": "Towards an experimental von Karman dynamo: numerical studies for an   optimized design",
    "url": "https://arxiv.org/abs/physics/0411213"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e0b9650d-02b2-4a6f-8431-7f395bf1a8df",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}