Oscillatory Marangoni convection in variable-viscosity fluid layer: The effect of thermal feedback control

S. Awang Kechil, Ishak Hashim

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The effect of a feedback control strategy on the onset of oscillatory convection in an infinite horizontal layer of fluid with temperature-dependent viscosity is investigated theoretically using linear stability analysis. It is shown that small viscosity variations stabilizes the fluid layer. Large controller gains, large viscosity variations, and high surface tension, however, promote the onset of overstability leading to oscillatory motions.

Original languageEnglish
Pages (from-to)1102-1107
Number of pages6
JournalInternational Journal of Thermal Sciences
Volume48
Issue number6
DOIs
Publication statusPublished - Jun 2009

Fingerprint

Marangoni convection
feedback control
Feedback control
Viscosity
viscosity
Fluids
fluids
Linear stability analysis
Surface tension
controllers
interfacial tension
convection
Controllers
Hot Temperature
Convection
Temperature
temperature

Keywords

  • Feedback control
  • Instability
  • Marangoni convection
  • Oscillatory
  • Variable-viscosity

ASJC Scopus subject areas

  • Engineering(all)
  • Condensed Matter Physics

Cite this

Oscillatory Marangoni convection in variable-viscosity fluid layer : The effect of thermal feedback control. / Kechil, S. Awang; Hashim, Ishak.

In: International Journal of Thermal Sciences, Vol. 48, No. 6, 06.2009, p. 1102-1107.

Research output: Contribution to journalArticle

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