AbstractLinear stability analysis was performed to study the mechanism of transition of thermocapillary convection in liquid bridges with liquid volume ratios ranging from 0.4 to 1.2, aspect ratio of 0.75 and Prandtl number of 100. 2-D governing equations were solved to obtain the steady axi-symmetric basic flow and temperature distributions. 3-D perturbation equations were discretized at the collocation grid points using the Chebyshev-collocation method. Eigenvalues and eigenfunctions were obtained by using the Q–R method.The predicted critical Marangoni numbers and critical frequencies were compared with data from space experiments. The disturbance of the temperature distribution on the free surface causes the onset of oscillatory convection. It is shown that the origin of instability is related to the hydrothermal origin for convections in large-Prandtl-number liquid bridges.
Hydrothermal instability of thermocapillary convection in large-Prandtl-number liquid bridges under microgravity
Advances in Space Research ; 41 , 12 ; 2126-2130
2007-08-29
5 pages
Article (Journal)
Electronic Resource
English
A linear stability analysis of large-Prandtl-number thermocapillary liquid bridges
Online Contents | 2008
|A linear stability analysis of large-Prandtl-number thermocapillary liquid bridges
Online Contents | 2008
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