{
  "annotation_id": "b9a61f7a-04f6-4d36-a191-81f0e4045d18",
  "date_created": "2026-03-02T18:01:18.086000Z",
  "date_modified": "2026-03-02T18:01:18.086000Z",
  "file_hash": "3d8e6efa0731766a841e42e682ec309b16c63ffac03f85e991180897df7c9975",
  "private": false,
  "record": {
    "abstract": "The horizontal convection within a rectangle tank is numerically simulated.\nThe flow is found to be unsteady at high Rayleigh numbers. There is a Hopf\nbifurcation of $Ra$ from steady solutions to periodic solutions, and the\ncritical Rayleigh number $Ra_c$ is obtained as $Ra_c=5.5377\\times 10^8$ for the\nmiddle plume forcing at $Pr=1$, which is much larger than the formerly obtained\nvalue. Besides, the unstable perturbations are always generated from the\ncentral jet, which implies that the onset of instability is due to velocity\nshear (shear instability) other than thermally dynamics (thermal instability).\nFinally, Paparella and Young\u0027s [J. Fluid Mech. 466 (2002) 205] first hypotheses\nabout the destabilization of the flow is numerically proved, i.e. the middle\nplume forcing can lead to a destabilization of the flow.",
    "arxiv_id": "physics/0702037",
    "authors": [
      "Liang Sun",
      "Dong-Jun MA",
      "Wei Zhang",
      "De-Jun Sun"
    ],
    "categories": [
      "physics.flu-dyn",
      "physics.ao-ph"
    ],
    "doi": "10.1088/0256-307X/25/6/054",
    "journal_ref": "Chin. Phys. Lett. 2008, 25(6), 2121-2124",
    "title": "Onset of unsteady horizontal convection in rectangle tank at $Pr=1$",
    "url": "https://arxiv.org/abs/physics/0702037"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5ea526ec-19da-44ff-af05-91a95dec30bc",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}