{
  "annotation_id": "e090fa45-b8c7-4e47-a68b-ce49e42c9469",
  "date_created": "2026-03-02T18:01:00.584000Z",
  "date_modified": "2026-03-02T18:01:00.584000Z",
  "file_hash": "2b8b8597ff4dc60fc147923e16a19471eb342264eda0545084500cce24977b6e",
  "private": false,
  "record": {
    "abstract": "We present direct numerical simulations of dynamo action in a forced Roberts\nflow. The behavior of the dynamo is followed as the mechanical Reynolds number\nis increased, starting from the laminar case until a turbulent regime is\nreached. The critical magnetic Reynolds for dynamo action is found, and in the\nturbulent flow it is observed to be nearly independent on the magnetic Prandtl\nnumber in the range from 0.3 to 0.1. Also the dependence of this threshold with\nthe amount of mechanical helicity in the flow is studied. For the different\nregimes found, the configuration of the magnetic and velocity fields in the\nsaturated steady state are discussed.",
    "arxiv_id": "physics/0505192",
    "authors": [
      "P. D. Mininni",
      "D. C. Montgomery"
    ],
    "categories": [
      "physics.flu-dyn",
      "physics.plasm-ph"
    ],
    "doi": "10.1103/PhysRevE.72.056320",
    "title": "Low magnetic Prandtl number dynamos with helical forcing",
    "url": "https://arxiv.org/abs/physics/0505192"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "46ca4439-04b3-4498-af3b-56d82750bdfb",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}