Influence of the geometric parameter on the regimes of natural convection and thermal surface radiation in a closed parallelepiped

S. G. Martyushev, I. V. Miroshnichenko, M. A. Sheremet

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We have performed a numerical analysis of the stationary regimes of thermogravitational convection and thermal surface radiation in a closed differentially heated parallelepiped. The mathematical model formulated in dimensionless natural velocity-pressure-temperature variables was realized numerically in the control volume approach. Analysis of the radiative heat exchange was carried out on the basis of the surface radiation approach with the use of the balance method in the Polyak variant. We have obtained three-dimensional temperature and velocity fields, as well as dependences for the mean Nusselt number reflecting the influence of the geometric parameter, the Rayleigh number, and the reduced emissive factor of the walls on the flow structure and the heat transfer.

Original languageEnglish
Pages (from-to)1522-1529
Number of pages8
JournalJournal of Engineering Physics and Thermophysics
Volume88
Issue number6
DOIs
Publication statusPublished - 1 Jan 2015

Fingerprint

parallelepipeds
Natural convection
free convection
Radiation
radiation
Flow structure
Rayleigh number
Nusselt number
numerical analysis
Numerical analysis
mathematical models
temperature distribution
convection
velocity distribution
heat transfer
Mathematical models
Heat transfer
heat
Temperature
temperature

Keywords

  • Control volume approach
  • Diathermal medium
  • Natural convection
  • Parallelepiped
  • Thermal surface radiation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Engineering(all)

Cite this

Influence of the geometric parameter on the regimes of natural convection and thermal surface radiation in a closed parallelepiped. / Martyushev, S. G.; Miroshnichenko, I. V.; Sheremet, M. A.

In: Journal of Engineering Physics and Thermophysics, Vol. 88, No. 6, 01.01.2015, p. 1522-1529.

Research output: Contribution to journalArticle

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