Convection in Two-Liquid-Layer System with Low Prandtl Number
作者:
M. Z. Saghir,
期刊:
Energy Sources
(Taylor Available online 1999)
卷期:
Volume 21,
issue 1-2
页码: 139-144
ISSN:0090-8312
年代: 1999
DOI:10.1080/00908319950015019
出版商: Informa UK Ltd
关键词: Capillary Forces Crystal Growth Interfacial Tension Marangoni Convection
数据来源: Taylor
摘要:
One of the most important features of solar panel manufacturing is the thermocapil lary convection of low-Prandtl-number fluid. This numerical modeling study is an effort to simulate the thermocapillary convection in a two-layer fluid system. A two-dimensional axisymmetric liquid column model is developed to obtain a quanti tative estimate of the thermocapillary convection velocities in a fluid with low Prandtl number encapsulated with viscous liquids such as silicone oil and eutectic salt. All simulations for the microgravity case are conducted using the finite element technique. The flow model is Newtonian, incompressible and interfacial tension gradients are linear. Interfacial deformation as a function of the temperature difference caused by the competing effects of fluid dynamic pressure and capillary pressure is reported for each sample, and the effect of encapsulant on this phenomenon is studied. The liquid column is more stable in the presence of an encapsulant.
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