Control of Marangoni instability in a layer of variable-viscosity fluid

S. Awang Kechil, Ishak Hashim

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The Marangoni instability in a temperature-dependent-viscosity fluid layer with deformable free surface under the influence of a linear feedback control strategy is investigated. The exact analytical solution for the stationary modes is developed and the effects of the interaction between variable viscosity, controller gains, free surface deformation, gravity waves and heat transfer mechanism on the onset of Marangoni convection are determined. The destabilizing effect of exponential viscosity variation can be effectively suppressed through small controlled perturbations in the thermal boundary data.

Original languageEnglish
Pages (from-to)1368-1374
Number of pages7
JournalInternational Communications in Heat and Mass Transfer
Volume35
Issue number10
DOIs
Publication statusPublished - Dec 2008

Fingerprint

Viscosity
viscosity
Fluids
fluids
Marangoni convection
Gravity waves
gravity waves
feedback control
Feedback control
controllers
heat transfer
Heat transfer
perturbation
Controllers
interactions
Temperature
temperature
Convection
Hot Temperature

Keywords

  • Deformable free surface
  • Feedback control
  • Instability
  • Marangoni convection
  • Variable viscosity

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics

Cite this

Control of Marangoni instability in a layer of variable-viscosity fluid. / Awang Kechil, S.; Hashim, Ishak.

In: International Communications in Heat and Mass Transfer, Vol. 35, No. 10, 12.2008, p. 1368-1374.

Research output: Contribution to journalArticle

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