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Application of the limiting current method to mass transfer in packed beds at very low reynolds numbers
Author(s) -
Appel Peter W.,
Newman John
Publication year - 1976
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690220605
Subject(s) - reynolds number , nusselt number , packed bed , mass transfer , limiting , mechanics , limiting current , spheres , thermodynamics , sherwood number , current (fluid) , materials science , mathematics , chemistry , physics , chromatography , engineering , turbulence , mechanical engineering , electrode , astronomy , electrochemistry
The limiting current technique is used to obtain mass transfer coefficients at very low Reynolds numbers ( Re < 0.1) in a packed bed consisting of stainless steel spheres. The data show that for Re < 0.015, the Nusselt numbers are below those predicted by existing empirical correlations. The results are discussed in the light of some mathematical models for packed beds reported in the literature and show semiquantitative agreement with the values predicted by Sorensen and Stewart (1974 a ).