{
  "annotation_id": "2b33c8c4-6fa4-4589-87b1-cc801b01a517",
  "date_created": "2026-03-02T18:00:39.714000Z",
  "date_modified": "2026-03-02T18:00:39.714000Z",
  "file_hash": "21b6c3e81ae581ed82c2e49f3d25ed0733ac254c11dbd1dca995306d1718cc09",
  "private": false,
  "record": {
    "abstract": "The probability density function (PDF) of velocity fluctuations is studied\nexperimentally for grid turbulence in a systematical manner. At small distances\nfrom the grid, where the turbulence is still developing, the PDF is\nsub-Gaussian. At intermediate distances, where the turbulence is fully\ndeveloped, the PDF is Gaussian. At large distances, where the turbulence has\ndecayed, the PDF is hyper-Gaussian. The Fourier transforms of the velocity\nfluctuations always have Gaussian PDFs. At intermediate distances from the\ngrid, the Fourier transforms are statistically independent of each other. This\nis the necessary and sufficient condition for Gaussianity of the velocity\nfluctuations. At small and large distances, the Fourier transforms are\ndependent.",
    "arxiv_id": "physics/0203028",
    "authors": [
      "H. Mouri",
      "M. Takaoka",
      "A. Hori",
      "Y. Kawashima"
    ],
    "categories": [
      "physics.flu-dyn"
    ],
    "doi": "10.1103/PhysRevE.65.056304",
    "journal_ref": "PRE, 65, 056304 [2002]",
    "title": "Probability density function of turbulent velocity fluctuation",
    "url": "https://arxiv.org/abs/physics/0203028"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f7da71d6-542b-4e66-aba6-1d6667ff9c1e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}