Surface relief accompanying natural convection in liquid pools heated from below

被引:30
作者
Kayser, William V. [1 ]
Berg, John C. [1 ]
机构
[1] Univ Washington, Dept Chem Engn, Seattle, WA 98195 USA
基金
美国国家科学基金会;
关键词
D O I
10.1017/S0022112073001989
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
Free-surface deformations accompanying natural convection in shallow liquid pools heated from below by a straight wire are studied. Two-dimensional flow ensues as density gradients are set up in the bulk liquid and surface tension gradients are set up in the interface. Surface profiles are measured experimentally using a reflecting schlieren technique. Profiles concave above the rising warm current are produced in the shallower pools and convex profiles in the deeper pools. The profile for intermediate depths is a hybrid with a shallow crest rising from a shallow trough. A mathematical model of the system is developed and yields numerical results in qualitative agreement with experiment. The importance of various fluid properties and system parameters on the surface profile is examined using further calculations based on the model.
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页码:739 / U320
页数:17
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