{
  "annotation_id": "7483e65a-0115-4035-8544-a3418c91f5e1",
  "date_created": "2026-03-02T18:01:18.367000Z",
  "date_modified": "2026-03-02T18:01:18.367000Z",
  "file_hash": "bd372118881f2e2c05ab6c1dec42a44d2e24baf99065a0923521748cf894c7be",
  "private": false,
  "record": {
    "abstract": "We study numerically the induction mechanisms generated from an array of\nhelical motions distributed along a cylinder. Our flow is a very idealized\ngeometry of the columnar structure that has been proposed for the convective\nmotion inside the Earth core. Using an analytically prescribed flow, we apply a\nrecently introduced iterative numerical scheme to solve the induction equation\nand analyze the flow response to externally applied fields with simple\ngeometries (azimuthal, radial, etc.). Symmetry properties allow us to build\nselected induction modes whose interactions lead to dynamo mechanisms. Using an\ninduction operator formalism, we show how dipole and quadrupole dynamos can be\nenvisioned from such motions.",
    "arxiv_id": "physics/0703235",
    "authors": [
      "R. Volk",
      "P. Odier",
      "J. -F. Pinton"
    ],
    "categories": [
      "physics.flu-dyn",
      "physics.geo-ph"
    ],
    "title": "Dynamo action in cylindrical annulus",
    "url": "https://arxiv.org/abs/physics/0703235"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "95a92549-9763-433b-bc62-5e0946c4322f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}