Abstract
AbstractThis work deals with thc influence of unheated vertical walls, symnietrically placed with respect to a single heated horizontal cylinder, upon the natural convection heat transfer froni a heated cylinder. The study is experimental. By using air, water and Frecon 113 as working flnids, a Rayleigh number range of 10 to 500,000 lias been investigated. Various conibiuations of wall spacing and wall height have been examined. Empirical correlations of Nussclt number with Rayleigh nnmber and geometric parameters are presented. The presence of walls enhances heat transfer froni the cylinder for certain geometries. Wall spacings smaller than two diameters have not been investigated.
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