Aspect ratio effect on oxygen transfer process in rectangular tank surface aerator

Rao, Achanta Ramakrishna and Kumar, Bimlesh (2007) Aspect ratio effect on oxygen transfer process in rectangular tank surface aerator. In: Asia-Pacific Journal of Chemical Engineering, 2 (6). pp. 592-598.

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Abstract

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 $(K_La_{20})$ is uniquely related to the mean velocity gradient (G). It has been found that at constant mean velocity gradient (G), $K_La_{20}$ is high in lower aspect ratio tanks and it decreases as the aspect ratio increases.

Item Type:	Journal Article
Publication:	Asia-Pacific Journal of Chemical Engineering
Publisher:	John Wiley and Sons
Additional Information:	Copyright of this article belongs to John Wiley and Sons.
Keywords:	aspect Ratio;Mean velocity gradient;Oxygen transfer coefficient;Rectangular Surface aerators;Surface aeration;Water and wastewater treatment.
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	11 Jul 2008
Last Modified:	23 Feb 2012 06:13
URI:	http://eprints.iisc.ac.in/id/eprint/11658

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