Premium
Aspect ratio effect on oxygen transfer process in rectangular tank surface aerator
Author(s) -
Ramakrishna Rao Achanta,
Kumar Bimlesh
Publication year - 2007
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.60
Subject(s) - aspect ratio (aeronautics) , aeration , diameter ratio , oxygen , mechanics , constant (computer programming) , materials science , chemistry , analytical chemistry (journal) , thermodynamics , physics , composite material , chromatography , computer science , organic chemistry , programming language
Surface aeration experiments were conducted in three types of geometrically similar rectangular tanks of aspect ratios, i.e. length to width ratio ( L / W ) of 1, 1.5 and 2 in order to study the effect of aspect ratio on the oxygen transfer process. It is observed that for geometrically similar tanks, oxygen transfer coefficient ( K L a 20 ) is uniquely related to the mean velocity gradient ( G ). It has been found that at constant mean velocity gradient ( G ), K L a 20 is high in lower aspect ratio tanks and it decreases as the aspect ratio increases. Copyright © 2007 Curtin University of Technology and John Wiley & Sons, Ltd.