Experimental results of pure and simultaneous heat and mass transfer by free convection about a vertical cylinder for Pr=0.71 and Sc=0.63

Applied Scientific Research - Tập 25 - Trang 372-382 - 1972
F. A. Bottemanne1
1Dept. of Physics and Meteorology, Wageningen University of Agriculture, Wageningen, The Netherlands

Tóm tắt

In this paper experimental results are given concerning stationary heat and mass transfer in the laminar boundary layer of a vertical cylinder placed in still air. The combined effect is considered as well as the two separate effects. Measurements are carried out on heat transfer and evaporation of water. Results are in close agreement with the classical free convection boundary layer theory for a vertical flat plate, if only a small cylinder correction is applied.

Tài liệu tham khảo

Schmidt, E., W. Beckmann and W. Pohlhausen, Techn. Mech. u. Thermodyn. 1 (1930) 341, 391. Ostrach, S., NACA TN 2635 (1952) or NACA Rept. 1111 (1953). Nusselt, W., Z. VDI 60 (1916) 102, 541, 565. Wilke, C. R., C. W. Tobias and M. Eisenberg, Chem. Eng. Progr. 49 (1953) 663. Bottemanne, F. A., Appl. Sci. Res. 25 (1971) 137. Bottemanne, F. A., Thesis, Delft (1970) (in Dutch). Also appeared as Meded. Landbouwhogeschool-Wageningen 70-11-(1970). Adams, J. A. and P. W. McFadden, A.I.Ch.E. Journal 12 (1966) 642. Somers, E. V., J. Appl. Mech. 23 (1956) 295. Wilcox, W. R., Chem. Eng. Sci. 13 (1961) 113. De Leeuw den Bouter, J. A., B. de Munnik and P. M. Heertjes, Chem. Eng. Sci. 23 (1968) 1185. Mathers, W. G., A. J. Madden and E. L. Piret, Ind. Eng. Chem. 49 (1957) 963. Sparrow, E. M. and J. L. Gregg, Trans. A.S.M.E. 80 (1956) 1823.