Visualization and analysis of surface tension and cooling effects on differentially heated cavity using heatline concept

H. Saleh, N. Arbin, R. Roslan, Ishak Hashim

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Convection in a square cavity with a free surface and heated from the side is visualized and analyzed by the heatline concept. The temperature gradient is applied along the top free surface and the heat balance at the surface is assumed to obey Newton's law of cooling. The finite difference method has been used to solve the dimensionless governing equations. The governing parameters considered are the Marangoni number (0 ≤ Ma ≤ 1000), the Biot number (0 ≤ Bi ≤ 6) and the Prandtl number (0.054 ≤ Pr ≤ 6.2). The flows of heat and fluid are of a similar type except at a strong cooling condition. The heat transfer performance presents a minimum at Marangoni number of roughly 100, 200 and 600 for the cavity filled with liquid metal, mixture of noble gases and air, respectively.

Original languageEnglish
Pages (from-to)6000-6009
Number of pages10
JournalInternational Journal of Heat and Mass Transfer
Volume55
Issue number21-22
DOIs
Publication statusPublished - Oct 2012

Fingerprint

surface cooling
Surface tension
interfacial tension
Visualization
Cooling
cavities
Biot number
Noble Gases
cooling
heat balance
Prandtl number
Inert gases
liquid metals
Liquid metals
Finite difference method
Thermal gradients
newton
rare gases
temperature gradients
convection

Keywords

  • Heatlines
  • Marangoni convection
  • Natural convection

ASJC Scopus subject areas

  • Mechanical Engineering
  • Condensed Matter Physics
  • Fluid Flow and Transfer Processes

Cite this

Visualization and analysis of surface tension and cooling effects on differentially heated cavity using heatline concept. / Saleh, H.; Arbin, N.; Roslan, R.; Hashim, Ishak.

In: International Journal of Heat and Mass Transfer, Vol. 55, No. 21-22, 10.2012, p. 6000-6009.

Research output: Contribution to journalArticle

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