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Impact of Spherical Catalyst Particles on Gas‐Liquid Flow Regimes in Minichannels with Square Cross Section
Author(s) -
Haase Stefan,
Langsch Robert,
Bauer Tobias,
Lange Rüdiger
Publication year - 2014
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.201300143
Subject(s) - dimensionless quantity , square (algebra) , flow (mathematics) , mechanics , materials science , flow visualization , packed bed , visualization , cross section (physics) , thermodynamics , chemistry , geometry , chromatography , mechanical engineering , physics , engineering , mathematics , quantum mechanics
The design of process equipment involving minichannel structures necessitates detailed knowledge on the flow conditions inside the apparatus. Here, flow regimes in empty and sphere‐packed square channels were investigated by using optical flow visualization with a high‐speed camera. Flow maps as well as new correlations to predict the flow regime transitions based on the dimensionless gas and liquid Weber numbers are presented. Segmented flow regimes occurred in the studied empty and packed channels for very low gas and low liquid Weber numbers. Such a liquid flow in separate compartments may contribute to the design of highly efficient contacting apparatuses.