Mass transfer and dispersion around an active cylinder in cross flow and buried in a packed bed

• Type: Article in International Scientific Journal
• Date: 2006

Authors

J. M. P. Q. Delgado (Author) FEUP

Journal

Title: HEAT AND MASS TRANSFER

Vol. 42 No. 12

Pages: 1119-1128

ISSN: 0947-7411

Indexing

ISI Web of Knowledge - 2 Citations

ISI Web of Science

Scopus - 4 Citations

INSPEC

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

Authenticus ID: P-004-GTE

DOI: 10.1007/s00231-005-0076-4

Abstract (EN): The present work describes the mass transfer process between a moving fluid and a slightly soluble cylinder, with the axis perpendicular to flow direction, buried in a packed bed of small inert particles, with uniform voidage. Fluid flow in the packed bed around the cylinder was assumed to follow Darcy¿s law and, at each point, dispersion of solute was assumed to be determined by radial and axial dispersion coefficients, in the cross-stream and streamwise directions, respectively. Numerical solutions of the differential equation describing solute mass conservation were undertaken to obtain the concentration field near the soluble surface and the mass transfer flux was integrated to give the Sherwood number as a function of the relevant parameters. Mathematical expressions are proposed that describes accurately the dependence found numerically between the value of the Sherwood number and the values of Peclet number, Schmidt number and the ratio between the diameter of cylinder and the diameter of inerts.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10