Premium
Mass transfer at geometrically dissimilar rough surfaces
Author(s) -
Tantirige S.,
Trass O.
Publication year - 1984
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450620407
Subject(s) - reynolds number , mass transfer , surface finish , schmidt number , surface roughness , perpendicular , materials science , geometry , square (algebra) , rough surface , mechanics , duct (anatomy) , optics , mathematics , composite material , physics , turbulence , medicine , pathology
Mass transfer rates at rough surfaces composed of V‐shaped grooves perpendicular to the direction of flow have been measured in a 25 mm square duct by an electrochemical technique. Roughness heights ranged from 50 to 700 μm, at various pitch/height ratios. The Reynolds number was varied from 2000 to 85,000, at Schmidt numbers of 1600 and 3600. Transfer enhancement depended on both size and shape of the roughness elements; rates four times greater than smooth surface values were observed.