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Influence of Artificial Roughness on Heat Transfer in the Rotating Flow
Abstract:The results of an experimental study of the process of convective and boiling heat transfer in the vessel with stirrer for smooth and rough ring-shaped pipes are presented. It is established that creation of two-dimensional artificial roughness on the heated surface causes the essential (~100%) intensification of convective heat transfer. In case of boiling the influence of roughness appears on the initial stage of boiling and in case of fully developed nucleate boiling there was no intensification of heat transfer. The similitude equation for calculating convective heat transfer coefficient, which generalizes well experimental data both for the smooth and the rough surfaces is proposed.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1075745Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1547
 Braginski L.N., Begachev V.I., Barabash V.M. Mixing in liquid media.(In Russian), L.,Chem., 1984, 336p.
 Gomelauri V. Influence of Two-dimensional Artificial Roughness on Convective Heat Transfer. Int. J. Heat and Mass Transfer, v.7, N6, 1964.
 Kalinin E.K., Dreitser G.A., Iarxo C.A. Intensification of heat transfer in channels (In Russian). ð£., Mashinoctroenie, 1972, 219p.
 Magrakvelidze T. Bantsadze N. Lekveishvili N. Influence of Artificial Roughness on Heat Transfer to Turbulent Mixed Liquid in a Pool. Bulletin of the Georgian Academy of Sciences, N3, 1996, pp.397-400.
 Magrakvelidze T. Bantsadze N. Lekveishvili N. 1999. Similitude Equations for Calculating Heat Transfer Coefficient in Stirred Tanks. Bulletin of the Georgian Academy of Sciences, N3, 1999, pp.451-453.
 Gomelauri V.I., Magrakvelidze T. Sh. Experimental Study of Influence of Two-dimentional Roughness on Critical Heat Fluxes and Heat Transfer in Case of Subcooled Water Flow Boiling. Heat Engineering, 1976,#6, pp. 4