NATURAL CONVECTIONIN SHALLOW ENCLOSURES WITH DIFFERENTIALLY HEATED END WALLS AND NONADIABATIC HORIZONTAL WALLS

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Numerical studies of laminar natural convection at high Ra numbers in shallow enclosures are reported. In these studies the working fluid is allowed to interact with the horizontal walls. It is shown that even a small amount of heat loss from these walls can lead to a flow structure qualitatively different from the more commonly studied situation where the horizontal walls are adiabatic. This is particularly important in applications where the mass transfer and flow structure are of interest. The results highlight the difficulty in practice of both approximating the adiabatic horizontal wall condition, and interpreting experimental data.

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27 p.

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Gadgil, A. & Shiralkar, G. May 1, 1983.

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Numerical studies of laminar natural convection at high Ra numbers in shallow enclosures are reported. In these studies the working fluid is allowed to interact with the horizontal walls. It is shown that even a small amount of heat loss from these walls can lead to a flow structure qualitatively different from the more commonly studied situation where the horizontal walls are adiabatic. This is particularly important in applications where the mass transfer and flow structure are of interest. The results highlight the difficulty in practice of both approximating the adiabatic horizontal wall condition, and interpreting experimental data.

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27 p.

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  • Journal Name: International Journal of Heat and Mass Transfer

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  • Report No.: LBL-14352
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 943357
  • Archival Resource Key: ark:/67531/metadc897621

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Office of Scientific & Technical Information Technical Reports

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  • May 1, 1983

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  • Sept. 27, 2016, 1:39 a.m.

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  • Jan. 4, 2017, 5:39 p.m.

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Gadgil, A. & Shiralkar, G. NATURAL CONVECTIONIN SHALLOW ENCLOSURES WITH DIFFERENTIALLY HEATED END WALLS AND NONADIABATIC HORIZONTAL WALLS, article, May 1, 1983; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc897621/: accessed October 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.