8 IJ
= = = =
P
Q
Fultz, D., “Fluid Models in Geophysics,” p. 101, Office of Naval Research, Washington, D. C., 1953. Fultz, D., Nakagawa, Y . , Proc. Roy. Soc. (London) Ser. A 231, 211
angular coordinate fluid viscosity, lb./(hr.)(ft,) fluid density, lb./(cu. foot) rate of rotation, r.p.m.
,,nrr\
(lY33).
SUBSCRIPTS AND SUPERSCRIPTS 1 = inner cylinder wall 2 = outer cylinder wall rm = length mean - = upward flow and downward regions, respectively
+,
Literature Cited
Bjorklund, I. S., Kays, W. M., Trans. A.S.M.E. Ser. C 81, 175 (1959). Chandrasekhar, S., “Hydrodynamic and Hydromagnetic Stability,’’ Chap. 2, 3, 7, 8, Oxford Univ. Press, London, 1961. Chandrasekhar, S., Proc. Roy. SOC. (London) Ser. A 217, 306 (1953). Chandrasekhar, S., Elbert, D., Proc. Roy. SOC.( L o n d o n ) Ser. A 231, 198 (1955). Dropkin, D., Gelb, G., Trans. A.S.M.E. Ser. C86,204 (1964). Dropkin, D., Globe, S., J . Appl. Phys. 30, 84 (1959).
Fultz, D., Nakagawa, Y., Frenzen, P., Phys. Rev. 94, 1471 (1954). Globe, S., Dropkin, D., Trans. A.S.M.E. Ser. C 81, 24 (1959). Goroff. I. R.. Proc. Rov. SOC. (London) Ser. A 254. 537 (1960). Grohne, D.,’Nachr. Akad. Wiss. Goittingen, II. ‘ Maih. Phjsik. Kl., D. ,--263 - - (19561. Kraussold, H., Forsch. Gebiete Ingenieurw. 2, 186 (1934). Kuo, H. L., J . Meteorol. 10, 235 (1953); 11, 399 (1954); 13, 82, 521 (1956); 9. 260 (1952); J . Marine Res. 14. 14 (1955): Tellus5, 475 (1953). Lance, G. N., DeLand, E. C., Univ. Calif. (Berkeley) Publ. Eng. 5 , 159 (1957). Nakagawa, Y., Frenzen, P., Tellus 7,1(1955). Petree, D. K., Dunkley, W. L., Smith, J. M., IND.END. CHEM. FUNDAMENTALS 4,171 (1965). Petree, D. K., M.S. thesis, University of California, Davis, Calif., December 1966. Schultz-Grunow, F., Z. Angew. Math. Mech. 39,101 (1959). Taylor, G. I., Phil. Trans. Roy. SOC. (London) Ser. A 223, 289 (1923). \ - - - - , -
RECEIVED for review February 27, 1967 ACCEPTEDDecember 22, 1967
MASS TRANSFER IN T H E FLOW OF GASES
THROUGH PACKED BEDS Low Reynolds Number Region LOUIS J. PETROVIC AND GEORGE THODOS
Northwestern University, Ecanston, Ill. 60201
Mass transfer factors associated with the vaporization of water and heavy hydrocarbons from the surface of porous spheres, 0.0721 to 0.370 inch in diameter, have been established in the low Reynolds number region (3 N R ~ 230) taking into account a correction for axial mixing. The carrier gas used was air which flowed through packed and dispersed beds of these spheres. To produce a dispersed bed, porous spheres saturated with a liquid were placed in a matrix of dry glass spheres. The results for both types of beds have been correlated with the Reynolds number to produce a single relationship of Ejd vs. N R ~ .
