Natural convection in a differentially heated square enclosure with a solid polygon

R. Roslan, H. Saleh, Ishak Hashim

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The aim of the present numerical study is to analyze the conjugate natural convection heat transfer in a differentially heated square enclosure containing a conductive polygon object. The left wall is heated and the right wall is cooled, while the horizontal walls are kept adiabatic. The COMSOL Multiphysics software is applied to solve the dimensionless governing equations. The governing parameters considered are the polygon type, 3≤N≤∞, the horizontal position, 0.25≤X0≤0.75, the polygon size, 0≤A≤π/16, the thermal conductivity ratio, 0.1≤Kr≤10.0, and the Rayleigh number, 103≤Ra≤106. The critical size of the solid polygon was found exists at low conductivities. The heat transfer rate increases with the increase of the size of the solid polygon, until it reaches its maximum value. Here, the size of the solid polygon is reaches its critical value. Further, beyond this critical size of the solid polygon, will decrease the heat transfer rate.

Original languageEnglish
Article number617492
JournalScientific World Journal
Volume2014
DOIs
Publication statusPublished - 2014

Fingerprint

Convection
polygon
Enclosures
Natural convection
Hot Temperature
convection
Heat transfer
Thermal Conductivity
heat transfer
Software
Thermal conductivity
Rayleigh number
thermal conductivity
conductivity
software

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Environmental Science(all)
  • Medicine(all)

Cite this

Natural convection in a differentially heated square enclosure with a solid polygon. / Roslan, R.; Saleh, H.; Hashim, Ishak.

In: Scientific World Journal, Vol. 2014, 617492, 2014.

Research output: Contribution to journalArticle

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