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ISSN Online: 2377-424X

ISBN Print: 1-56032-797-9

International Heat Transfer Conference 11
August, 23-28, 1998, Kyongju, Korea

TRANSIENT COOLING OF WATER AROUND TWO HORIZONTAL, VERTICALLY SPACED CYLINDER IN A RECTANGULAR CAVITY

Get access (open in a dialog) DOI: 10.1615/IHTC11.3630
pages 555-560

Resumo

Transient cooling of water around two cooled horizontal, vertically spaced cylinders placed in a rectangular enclosure was studied. The governing equations were solved by a finite difference method, and the flow structure and temperature distributions were predicted. The purpose of this study was to examine the effects of the spacing between the cylinders and the initial temperature of water on the cooling process of water. The initial water temperature was varied at 4, 6, 8 and 12°C, and timewise variations of the temperature field and the velocity field, the mean Nusselt numbers on the cylinder surfaces, as well as the mean water temperature were compared. The effect of a change in the spacing between the cylinders on the cooling process appeared at an earlier stage as the initial temperature of water was increased. Complicated flow patterns were observed for initial water temperatures larger than 4 °C due to the density inversion of water, irrespective of the extent of the spacing