dorsal/arxiv
View SchemaFast Numerical simulations of 2D turbulence using a dynamic model for Subgrid Motions
| Authors | J. -P. Laval, B. Dubrulle, S. Nazarenko |
|---|---|
| Categories | |
| ArXiv ID | physics/0101037 |
| URL | https://arxiv.org/abs/physics/0101037 |
| DOI | 10.1016/j.jcp.2003.10.022 |
| Journal | Journal of Computational Physics, vol 196 (1), pp 184-207 (2004) |
Abstract
We present numerical simulation of 2D turbulent flow using a new model for the subgrid scales which are computed using a dynamic equation linking the subgrid scales with the resolved velocity. This equation is not postulated, but derived from the constitutive equations under the assumption that the non-linear interactions of subgrid scales between themselves are equivalent to a turbulent viscosity.The performances of our model are compared with Direct Numerical Simulations of decaying and forced turbulence. For a same resolution, numerical simulations using our model allow for a significant reduction of the computational time (of the order of 100 in the case we consider), and allow the achievement of significantly larger Reynolds number than the direct method.
{
"annotation_id": "2c832b2b-c2e6-4016-90fd-4e60d711b8b9",
"date_created": "2026-03-02T18:00:32.495000Z",
"date_modified": "2026-03-02T18:00:32.495000Z",
"file_hash": "ffe992b235ca4f010d9b862f28e85f2ac3148bd1e311100184c00e78f26ce962",
"private": false,
"record": {
"abstract": "We present numerical simulation of 2D turbulent flow using a new model for\nthe subgrid scales which are computed using a dynamic equation linking the\nsubgrid scales with the resolved velocity. This equation is not postulated, but\nderived from the constitutive equations under the assumption that the\nnon-linear interactions of subgrid scales between themselves are equivalent to\na turbulent viscosity.The performances of our model are compared with Direct\nNumerical Simulations of decaying and forced turbulence. For a same resolution,\nnumerical simulations using our model allow for a significant reduction of the\ncomputational time (of the order of 100 in the case we consider), and allow the\nachievement of significantly larger Reynolds number than the direct method.",
"arxiv_id": "physics/0101037",
"authors": [
"J. -P. Laval",
"B. Dubrulle",
"S. Nazarenko"
],
"categories": [
"physics.flu-dyn",
"nlin.CD",
"physics.ao-ph",
"physics.comp-ph"
],
"doi": "10.1016/j.jcp.2003.10.022",
"journal_ref": "Journal of Computational Physics, vol 196 (1), pp 184-207 (2004)",
"title": "Fast Numerical simulations of 2D turbulence using a dynamic model for Subgrid Motions",
"url": "https://arxiv.org/abs/physics/0101037"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "d1f60570-8405-4e18-bff5-c1214c1fcf0a",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}