Oscillatory buoyant thermocapillary flow

1994 ◽  
Vol 6 (10) ◽  
pp. 3294-3305 ◽  
Author(s):  
M. Mundrane ◽  
A. Zebib
Keyword(s):  
Thermocapillary Flow

Thermocapillary Flow in an Annular Two-Layer Liquid System

2016 ◽  
Vol 3 (1) ◽  
pp. 33-38
Author(s):  
Zhong Zeng ◽  
◽  
Haiqiong Xie ◽  
Liangqi Zhang ◽  
Yuui Yokota ◽  
...  
Keyword(s):  
Liquid System ◽  
Thermocapillary Flow

Oscillatory thermocapillary flow induced by radiant heating

1995 ◽  
Author(s):  
Kwang-Chung Hsieh ◽  
Robert Thompson ◽  
David Va ◽  
Kenneth DeWitt ◽  
Jon Nash
Keyword(s):  
Thermocapillary Flow ◽  
Radiant Heating

Stability of thermocapillary flows in non-cylindrical liquid bridges

2002 ◽  
Vol 458 ◽  
pp. 35-73 ◽  
Author(s):  
CH. NIENHÜSER ◽  
H. C. KUHLMANN
Keyword(s):  
Reynolds Number ◽  
Prandtl Number ◽  
Critical Reynolds Number ◽  
Volume Fraction ◽  
Thermocapillary Flow ◽  
Surface Shape ◽  
Liquid Bridges ◽  
Gravity Level ◽  
Neutral Curves ◽  
Prandtl Numbers

The thermocapillary flow in liquid bridges is investigated numerically. In the limit of large mean surface tension the free-surface shape is independent of the flow and temperature fields and depends only on the volume of liquid and the hydrostatic pressure difference. When gravity acts parallel to the axis of the liquid bridge the shape is axisymmetric. A differential heating of the bounding circular disks then causes a steady two-dimensional thermocapillary flow which is calculated by a finite-difference method on body-fitted coordinates. The linear-stability problem for the basic flow is solved using azimuthal normal modes computed with the same discretization method. The dependence of the critical Reynolds number on the volume fraction, gravity level, Prandtl number, and aspect ratio is explained by analysing the energy budgets of the neutral modes. For small Prandtl numbers (Pr = 0.02) the critical Reynolds number exhibits a smooth minimum near volume fractions which approximately correspond to the volume of a cylindrical bridge. When the Prandtl number is large (Pr = 4) the intersection of two neutral curves results in a sharp peak of the critical Reynolds number. Since the instabilities for low and high Prandtl numbers are markedly different, the influence of gravity leads to a distinctly different behaviour. While the hydrostatic shape of the bridge is the most important effect of gravity on the critical point for low-Prandtl-number flows, buoyancy is the dominating factor for the stability of the flow in a gravity field when the Prandtl number is high.

Effect of centrifugal forces on the instability of the thermocapillary flow in partially confined half-zones

2006 ◽  
Vol 18 (3-4) ◽  
pp. 132-136
Author(s):  
Hendrik C. Kuhlmann ◽  
Suguru Shiratori ◽  
Taketoshi Hibiya
Keyword(s):  
Thermocapillary Flow ◽  
Centrifugal Forces
Sign in / Sign up

Export Citation Format

Share Document