dorsal/arxiv
View SchemaEffective viscosity of grease ice in linearized gravity waves
| Authors | Giacomo de Carolis, Piero Olla, Luca Pignagnoli |
|---|---|
| Categories | |
| ArXiv ID | physics/0402047 |
| URL | https://arxiv.org/abs/physics/0402047 |
| DOI | 10.1017/S002211200500474X |
| Journal | J. Fluid Mech. Vol. 535, PP. 369-381 (2005) |
Abstract
Grease ice is an agglomeration of disc-shaped ice crystals, named frazil ice, which forms in turbulent waters of the Polar Oceans and in rivers as well. It has been recognized that the properties of grease ice to damp surface gravity waves could be explained in terms of the effective viscosity of the ice slurry. This paper is devoted to the study of the dynamics of a suspension of disc-shaped particles in a gravity wave field. For dilute suspensions, depending on the strength and frequency of the external wave flow, two orientation regimes of the particles are predicted: a preferential orientation regime with the particles rotating in coherent fashion with the wave field, and a random orientation regime in which the particles oscillate around their initial orientation while diffusing under the effect of Brownian motion. For both motion regimes, the effective viscosity has been derived as a function of the wave frequency, wave amplitude and aspect ratio of the particles. Model predictions have been compared with wave attenuation data in frazil ice layers grown in wave tanks.
{
"annotation_id": "f4adf17b-8c0d-463a-aa94-030f152566df",
"date_created": "2026-03-02T18:00:49.590000Z",
"date_modified": "2026-03-02T18:00:49.590000Z",
"file_hash": "2c5df229430c65c12968ea775aaff7d716d112409b42f3f6f4790199a550ca78",
"private": false,
"record": {
"abstract": "Grease ice is an agglomeration of disc-shaped ice crystals, named frazil ice,\nwhich forms in turbulent waters of the Polar Oceans and in rivers as well. It\nhas been recognized that the properties of grease ice to damp surface gravity\nwaves could be explained in terms of the effective viscosity of the ice slurry.\nThis paper is devoted to the study of the dynamics of a suspension of\ndisc-shaped particles in a gravity wave field. For dilute suspensions,\ndepending on the strength and frequency of the external wave flow, two\norientation regimes of the particles are predicted: a preferential orientation\nregime with the particles rotating in coherent fashion with the wave field, and\na random orientation regime in which the particles oscillate around their\ninitial orientation while diffusing under the effect of Brownian motion. For\nboth motion regimes, the effective viscosity has been derived as a function of\nthe wave frequency, wave amplitude and aspect ratio of the particles. Model\npredictions have been compared with wave attenuation data in frazil ice layers\ngrown in wave tanks.",
"arxiv_id": "physics/0402047",
"authors": [
"Giacomo de Carolis",
"Piero Olla",
"Luca Pignagnoli"
],
"categories": [
"physics.flu-dyn",
"physics.ao-ph"
],
"doi": "10.1017/S002211200500474X",
"journal_ref": "J. Fluid Mech. Vol. 535, PP. 369-381 (2005)",
"title": "Effective viscosity of grease ice in linearized gravity waves",
"url": "https://arxiv.org/abs/physics/0402047"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "df2efa3d-0a03-447c-bf11-461727e67b04",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}