Conjugate Natural Convection in a Closed Domain Containing a Heat-Releasing Element with a Constant Heat-Release Intensity

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Abstract

Mathematical modeling of gravitational heat convection in a closed rectangular domain with finite-thickness heat-conducting walls in the presence of a heat-releasing element with a constant heat-release intensity located at the base of the domain under conditions of convective-radiative heat transfer on one external boundary is performed. The influence of constitutive parameters (Grashof number and relative thermal conductivity) and flow unsteadiness on local thermohydrodynamic characteristics (streamlines and temperature field) and on the integral parameter (mean Nusselt number on the inner surface of the solid walls) is analyzed. Results obtained for two models of the heat source (with a constant temperature and with a constant heat-release intensity) are compared.

Original languageEnglish
Pages (from-to)699-712
Number of pages14
JournalJournal of Applied Mechanics and Technical Physics
Volume51
Issue number5
DOIs
Publication statusPublished - 1 Sep 2010

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Keywords

  • conjugate heat transfer
  • heat-releasing element with a constant heat-release intensity
  • laminar flow regime
  • natural convection

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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