RT Journal Article
SR 00
A1 Nicolás, José A.
A1 Rivas, Damián
A1 Vega de Prada, José Manuel
T1 The interaction of thermocapillary convection and low-frequency vibration in nearly-inviscid liquid bridges
JF Zeitschrift für angewandte Mathematik und Physik, ZAMP
YR 1997
FD 1997
VO 48
IS 3
SP 389
OP 423
K1 Streaming flow, drift flow, thermocapillary convection, liquid bridges.
AB The combined effect of thermocapillary stress and steady forcing due to vibrations of the disks in a model-half-zone axisymmetric liquid bridge is considered for low-viscosity liquids (i.e., with a large capillary Reynolds number), and low nondimensional vibration frequencies (i.e., small as compared to the capillary Reynolds number). An asymptotic model is derived for the slowly-varying streaming flow in the bulk (outside the oscillatory boundary layers) resulting from both effects that includes also buoyancy and other thermal expansion effects. This model is used to first analyze the steady streaming flow patterns in isothermal conditions and then to show that mechanical vibrations can annihilate almost completely thermocapillary flows of fairly large Reynolds numbers provided that: (i) the Prandtl number is appropriately small, (ii) both disks are vibrated, and (iii) the vibrating amplitudes, frequency and phases are appropriate (the counterbalancing effect depends crucially on the difference of the vibrating phases of both disks)
PB Springer
SN 0044-2275
LK http://oa.upm.es/5895/
UL http://www.springerlink.com/content/rxt37jqjtlq6ynmf/