{
  "annotation_id": "b943ebb0-297c-4a61-8eb8-18f661cc18b2",
  "date_created": "2026-03-02T18:01:18.446000Z",
  "date_modified": "2026-03-02T18:01:18.446000Z",
  "file_hash": "9605a7aaf9300a3a751799bb8584ba4e4e92eb06b92e5765155cd4a9c6b06fc0",
  "private": false,
  "record": {
    "abstract": "We have developed novel instrumentation for making Lagrangian measurements of\ntemperature in diverse fluid flows. A small neutrally buoyant capsule is\nequipped with on-board electronics which measure temperature and transmit the\ndata via a wireless radio frequency link to a desktop computer. The device has\n80 dB dynamic range, resolving milli-Kelvin changes in temperature with up to\n100 ms sampling time. The capabilities of these \"smart particles\" are\ndemonstrated in turbulent thermal convection in water. We measure temperature\nvariations as the particle is advected by the convective motion, and analyse\nits statistics. Additional use of cameras allow us to track the particle\nposition and to report here the first direct measurement of Lagrangian heat\nflux transfer in Rayleigh-B{\\\u0027e}nard convection. The device shows promise for\nopening new research in a broad variety of fluid systems.",
    "arxiv_id": "physics/0703245",
    "authors": [
      "Woodrow L. Shew",
      "Yoann Gasteuil",
      "Mathieu Gibert",
      "Pascal Metz",
      "Jean-Francois Pinton"
    ],
    "categories": [
      "physics.flu-dyn"
    ],
    "doi": "10.1063/1.2745717",
    "journal_ref": "Rev. Sci. Instrum. 78, 065105 (2007)",
    "title": "An instrumented tracer for Lagrangian measurements in Rayleigh-B\\\u0027enard   convection",
    "url": "https://arxiv.org/abs/physics/0703245"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c7b3cd25-2c43-4ba1-ab2c-c68b4e16cfa1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}