Mathematical modeling of the laminar regime of conjugate convective heat transfer in an enclosure with an energy source under surface-radiation conditions

S. G. Martyushev, M. A. Sheremet

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A numerical analysis of the laminar regime of heat transfer in a square enclosure with finite-thickness heat-conducting walls in the presence of a constant-temperature heat-releasing element under the conditions of radiative heat exchange has been made in a surface-radiation approximation. A mathematical model has been formulated in dimensionless variables "stream function-vorticity-temperature," which was realized numerically by the finite-difference method. Temperature and streamline distributions reflecting the influence of the reduced emissivity factor of interior surfaces of enclosing walls, of the relative thermal-conductivity coefficient, and of the factor of unsteadiness on the flow regimes and heat transfer have been obtained.

Original languageEnglish
Pages (from-to)110-119
Number of pages10
JournalJournal of Engineering Physics and Thermophysics
Volume86
Issue number1
DOIs
Publication statusPublished - 1 Jan 2013

Fingerprint

convective heat transfer
energy sources
enclosure
Enclosures
Heat transfer
Radiation
heat
radiation
heat transfer
releasing
Vorticity
emissivity
Finite difference method
vorticity
Temperature
numerical analysis
Numerical analysis
Thermal conductivity
mathematical models
temperature distribution

Keywords

  • Finite-difference method
  • Heat transfer
  • Radiative heat exchange
  • Surface radiation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Engineering(all)

Cite this

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AB - A numerical analysis of the laminar regime of heat transfer in a square enclosure with finite-thickness heat-conducting walls in the presence of a constant-temperature heat-releasing element under the conditions of radiative heat exchange has been made in a surface-radiation approximation. A mathematical model has been formulated in dimensionless variables "stream function-vorticity-temperature," which was realized numerically by the finite-difference method. Temperature and streamline distributions reflecting the influence of the reduced emissivity factor of interior surfaces of enclosing walls, of the relative thermal-conductivity coefficient, and of the factor of unsteadiness on the flow regimes and heat transfer have been obtained.

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