Mathematical simulation of nonstationary regimes of natural convection in a cubical enclosure with finite-thickness heat-conducting walls

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4 Citations (Scopus)

Abstract

Nonstationary regimes of conjugate thermal-gravitational convection in a cubical enclosure in the conditions of horizontal temperature difference is numerically analyzed. The external surfaces of two opposite walls were at constant different temperatures, the rest external edges were considered adiabatic. The mathematical model based on Oberbeck-Bussinesq equations is formulated in dimensionless natural velocity-pressure variables. Typical temperature and velocity fields, which represent the effect of the nonstationarity factor, Prandtl number, and thermophysical characteristics of the enclosure solid walls on the flow and heat transfer, are obtained.

Original languageEnglish
Pages (from-to)298-308
Number of pages11
JournalJournal of Engineering Thermophysics
Volume22
Issue number4
DOIs
Publication statusPublished - 1 Oct 2013

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Natural Convection
Enclosure
enclosure
Enclosures
Natural convection
free convection
Heat
conduction
heat
Nonstationarity
Prandtl number
Temperature Field
Dimensionless
Velocity Field
Convection
Heat Transfer
mathematical models
temperature gradients
Simulation
temperature distribution

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Modelling and Simulation
  • Condensed Matter Physics
  • Environmental Engineering

Cite this

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AB - Nonstationary regimes of conjugate thermal-gravitational convection in a cubical enclosure in the conditions of horizontal temperature difference is numerically analyzed. The external surfaces of two opposite walls were at constant different temperatures, the rest external edges were considered adiabatic. The mathematical model based on Oberbeck-Bussinesq equations is formulated in dimensionless natural velocity-pressure variables. Typical temperature and velocity fields, which represent the effect of the nonstationarity factor, Prandtl number, and thermophysical characteristics of the enclosure solid walls on the flow and heat transfer, are obtained.

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