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ISSN Online: 2377-424X

ISBN Print: 0-89116-559-2

International Heat Transfer Conference 8
August, 17-22, 1986, San Francisco, USA

AN EXPERIMENTAL STUDY OF FREE CONVECTIVE HEAT TRANSFER FROM SHORT CYLINDERS WITH "WAVY" SURFACES

Get access (open in a dialog) DOI: 10.1615/IHTC8.2740
pages 1311-1316

Résumé

Free convective heat transfer rates from short cylinders with "wavy" surfaces have been experimentally determined. Tests were undertaken with the cylinders set at various angles between 0° and 90° to the horizontal. Cylinders with three different sizes of surface wave amplitude as well as smooth cylinders were used in the study. These cylinders had various heated length - to - mean diameter ratios. The mean heat transfer rates were determined using the transient method, i.e. by heating the cylinders and then measuring their temperature - time variation while they cooled. The results for the horizontal and vertical cases have first been correlated by assuming that the effects of length-to-diameter ratio and surface waviness can be separately considered. The inclined cylinder results have then been correlated in terms of these vertical and horizontal cylinder results.