Premium
A multi‐scale theoretical model for gas–Liquid interface mass transfer based on the wide spectrum eddy contact concept
Author(s) -
Han Luchang,
Luo Hean,
Liu Yuejin,
You Kuiyi,
Liu Pingle
Publication year - 2011
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.12327
Subject(s) - turbulence , mass transfer , isotropy , eddy , mechanics , mass transfer coefficient , convection , range (aeronautics) , scale (ratio) , eddy diffusion , diffusion , statistical physics , scale model , large eddy simulation , steady state (chemistry) , thermodynamics , physics , chemistry , optics , engineering , aerospace engineering , quantum mechanics
On the basis of the wide spectrum eddy contact concept and the isotropic turbulence theory, a multi‐scale theoretical model for the prediction of liquid‐side mass transfer coefficient in gas–liquid system was developed. The model was derived from an unsteady‐state convection and diffusion equation and considered the contributions of eddies with different sizes to the overall mass transfer coefficient. The proper contact time distribution at the surface is need to be determined to obtain satisfactory results with this model. Moreover, a simplified model was also proposed based on the assumption of steady‐state mass transfer mechanism for single eddy. The results predicted by this model showed a very good agreement with the available experimental data in a comparatively wide range of turbulence intensities. © 2010 American Institute of Chemical Engineers AIChE J, 2011