TY - JOUR
T1 - Faraday instability in a surface-frozen liquid
AU - Huber, P.
AU - Soprunyuk, V. P.
AU - Embs, J. P.
AU - Wagner, C.
AU - Deutsch, M.
AU - Kumar, S.
PY - 2005/5/13
Y1 - 2005/5/13
N2 - Faraday surface instability measurements of the critical acceleration, ac, and wave number, kc, for standing surface waves on a tetracosanol (C24H50) melt exhibit abrupt changes at Ts=54°C, â4°C above the bulk freezing temperature. The measured variations of ac and kc 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>Ts), to a surface-pinned, no-slip flow, characteristic of a flow near a wetted solid wall (T<Ts). The change at Ts 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.
AB - Faraday surface instability measurements of the critical acceleration, ac, and wave number, kc, for standing surface waves on a tetracosanol (C24H50) melt exhibit abrupt changes at Ts=54°C, â4°C above the bulk freezing temperature. The measured variations of ac and kc 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>Ts), to a surface-pinned, no-slip flow, characteristic of a flow near a wetted solid wall (T<Ts). The change at Ts 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.
UR - http://www.scopus.com/inward/record.url?scp=27144529986&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.94.184504
DO - 10.1103/PhysRevLett.94.184504
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:27144529986
SN - 0031-9007
VL - 94
JO - Physical Review Letters
JF - Physical Review Letters
IS - 18
M1 - 184504
ER -