Influence of Artificial Roughness on Heat Transfer in the Rotating Flow
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.
[1] Braginski L.N., Begachev V.I., Barabash V.M. Mixing in liquid
media.(In Russian), L.,Chem., 1984, 336p.
[2] Gomelauri V. Influence of Two-dimensional Artificial Roughness on
Convective Heat Transfer. Int. J. Heat and Mass Transfer, v.7, N6, 1964.
[3] Kalinin E.K., Dreitser G.A., Iarxo C.A. Intensification of heat transfer in
channels (In Russian). ð£., Mashinoctroenie, 1972, 219p.
[4] 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.
[5] 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.
[6] 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
[1] Braginski L.N., Begachev V.I., Barabash V.M. Mixing in liquid
media.(In Russian), L.,Chem., 1984, 336p.
[2] Gomelauri V. Influence of Two-dimensional Artificial Roughness on
Convective Heat Transfer. Int. J. Heat and Mass Transfer, v.7, N6, 1964.
[3] Kalinin E.K., Dreitser G.A., Iarxo C.A. Intensification of heat transfer in
channels (In Russian). ð£., Mashinoctroenie, 1972, 219p.
[4] 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.
[5] 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.
[6] 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
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:59759", author = "T. Magrakvelidze and N. Bantsadze and N. Lekveishvili and Kh. Lomidze", title = "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.", keywords = "boiling, heat transfer, roughness.", volume = "5", number = "1", pages = "207-4", }