dorsal/arxiv
View SchemaFaraday Instability in a Surface-Frozen Liquid
| Authors | Patrick Huber, Viktor Soprunyuk, Jan Embs, Christian Wagner, Moshe Deutsch, Satish Kumar |
|---|---|
| Categories | |
| ArXiv ID | physics/0504056 |
| URL | https://arxiv.org/abs/physics/0504056 |
| DOI | 10.1103/PhysRevLett.94.184504 |
Abstract
Faraday surface instability measurements of the critical acceleration, a_c, and wavenumber, k_c, for standing surface waves on a tetracosanol (C_24H_50) melt exhibit abrupt changes at T_s=54degC above the bulk freezing temperature. The measured variations of a_c and k_c vs. temperature and driving frequency are accounted for quantitatively by a hydrodynamic model, revealing a change from a free-slip surface flow, generic for a free liquid surface (T>T_s), to a surface-pinned, no-slip flow, characteristic of a flow near a wetted solid wall (T < T_s). The change at T_s is traced to the onset of surface freezing, where the steep velocity gradient in the surface-pinned flow significantly increases the viscous dissipation near the surface.
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"abstract": "Faraday surface instability measurements of the critical acceleration, a_c,\nand wavenumber, k_c, for standing surface waves on a tetracosanol (C_24H_50)\nmelt exhibit abrupt changes at T_s=54degC above the bulk freezing temperature.\nThe measured variations of a_c and k_c vs. temperature and driving frequency\nare accounted for quantitatively by a hydrodynamic model, revealing a change\nfrom a free-slip surface flow, generic for a free liquid surface (T\u003eT_s), to a\nsurface-pinned, no-slip flow, characteristic of a flow near a wetted solid wall\n(T \u003c T_s). The change at T_s is traced to the onset of surface freezing, where\nthe steep velocity gradient in the surface-pinned flow significantly increases\nthe viscous dissipation near the surface.",
"arxiv_id": "physics/0504056",
"authors": [
"Patrick Huber",
"Viktor Soprunyuk",
"Jan Embs",
"Christian Wagner",
"Moshe Deutsch",
"Satish Kumar"
],
"categories": [
"physics.flu-dyn"
],
"doi": "10.1103/PhysRevLett.94.184504",
"title": "Faraday Instability in a Surface-Frozen Liquid",
"url": "https://arxiv.org/abs/physics/0504056"
},
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