Numerical experiments on natural convection in a stably stratified fluid due to side-wall heating

J. Lee, M. T. Hyun, J. H. Moh

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Numerical experiments were conducted to study the natural convection in a stably stratified salt water solution with lateral heating in a square rectangular enclosure. The method of investigation employed is the finite-difference solution of the basic conservation equations for a two-dimensional, laminar, unsteady double-diffusive convection, and calculation is made for 1.0 X 10s < Raj < 1.0 X l<f and 0 £ N s IS. Four distinct flow regimes are observed depending on the magnitude of solutal stratification relative to thermal buoyancy N; unicell flow regime for N - 1, fully developed flow regime for N - 3, layered flow regime with the stagnant core for N — 5, and stagnant flow regime for N — 7. Formation of layered flow structure with time and the corresponding temperature and concentration distributions are examined. Due to the double-diffusive nature of heat and salt, interesting temperature and concentration profiles are obtained in each flow regime.

Original languageEnglish
Pages (from-to)343-355
Number of pages13
JournalNumerical Heat Transfer; Part A: Applications
Issue number3
Publication statusPublished - 1990 Dec

All Science Journal Classification (ASJC) codes

  • Numerical Analysis
  • Condensed Matter Physics


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