{
  "annotation_id": "eea273a8-009b-40e3-b85b-8e2992981255",
  "date_created": "2026-03-02T18:00:49.846000Z",
  "date_modified": "2026-03-02T18:00:49.846000Z",
  "file_hash": "ed64898cc736dbea0a8ac8ea83b35fb9c1c8c33650f8c9cd8f5a3e204b38418f",
  "private": false,
  "record": {
    "abstract": "The most elementary structures of turbulence, i.e., vortex tubes, are studied\nusing velocity data obtained in a laboratory experiment for boundary layers\nwith microscale Reynolds numbers 295-1258. We conduct conditional averaging for\nenhancements of a small-scale velocity increment and obtain the typical\nvelocity profile for vortex tubes. Their radii are of the order of the\nKolmogorov length. Their circulation velocities are of the order of the\nroot-mean-square velocity fluctuation. We also obtain the distribution of the\ninterval between successive enhancements of the velocity increment as the\nmeasure of the spatial distribution of vortex tubes. They tend to cluster\ntogether below about the integral length and more significantly below about the\nTaylor microscale. These properties are independent of the Reynolds number and\nare hence expected to be universal.",
    "arxiv_id": "physics/0407111",
    "authors": [
      "H. Mouri",
      "A. Hori",
      "Y. Kawashima"
    ],
    "categories": [
      "physics.flu-dyn"
    ],
    "doi": "10.1103/PhysRevE.70.066305",
    "journal_ref": "PRE, 70, 066305 [2004]",
    "title": "Vortex Tubes in Turbulence Velocity Fields at Reynolds Numbers 300-1300",
    "url": "https://arxiv.org/abs/physics/0407111"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d0e0dca8-3f6f-4f0e-b2b9-cced9d2fd9bb",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}