Control of Marangoni convection in a variable-viscosity fluid layer with deformable surface

被引：0

作者：

Kechil, Seripah Awang ^{[1
]}

Hashim, Ishak ^{[2
]}

机构：

[1] Univ Teknol MARA, Ctr Math Sci, Shah Alam Selangor 40450, Malaysia

[2] Univ Kebangsaan Malaysia, Sch Math Sci, Ukm Bangi Selangor 43600, Malaysia

来源：

WORLD CONGRESS ON ENGINEERING 2008, VOLS I-II | 2008年

关键词：

Marangoni convection; feedback control; variable viscosity; deformable surface; instability;

D O I：

暂无

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

The effectiveness of a proportional feedback control to suppress the Marangoni instability in a variable-viscosity fluid layer with a deformable free upper surface is investigated. Viscosity variation and deformable free surface have destabilizing effects on the stability limit. The stability thresholds for the short-scale mode are strongly dependent on viscosity variation and controller gain while the stability thresholds for the long-scale mode are greatly influenced by gravity and surface deformation. The feedback control strategy through thermal perturbation in the boundary data is shown effective in suppressing the Marangoni convection and delaying the onset of instability.

引用

页码：910 / +

页数：3

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