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DOI: 10.1615/ICHMT.2008.CHT.370
page 9

T. Asadi
Department of Chemical Engineering, Isfahan University of Technology, Isfahan84156, Iran

Mohsen Nasr Esfahany
Department of Chemical Engineering, Isfahan University of Technology


This paper presents a computational fluid dynamics (CFD)-based study for prediction of local mass transfer coefficient specifically in 90° elbows. Flow in the elbow is assumed to be turbulent and the RNG version of k-ε model was used for turbulence modeling. The ratio of the Maximum mass transfer coefficient for an elbow to the mass transfer coefficient for fully developed pipe flow (Sh/Shp) decreases as the Reynolds number (Re), Schmidt number (Sc) and curvature ratio (r/D) increases. Maximum mass transfer rate was observed at a distance one diameter downstream of the elbow. Numerical analysis results were in good agreement with experimental results obtained from literature.

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