Oxygen transfer and energy dissipation rate in surface aerator

Kumar, Bimlesh and Rao, Achanta Ramakrishna (2009) Oxygen transfer and energy dissipation rate in surface aerator. In: Bioresource Technology, 100 (11). pp. 2886-2888.

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Abstract

The dissipation rate of turbulent kinetic energy(e)is a key parameter for mixing in surface aerators. In particular, determination e across the impeller stream, where the most intensive mixing takes place, is essential to ascertain that an appropriate degree of mixing is achieved. Present work by using commercial software VisiMix calculates the energy dissipation rate in geometrically similar unbaffled surface aeration systems in order to scale-up the oxygen transfer process. It is found that in geometrically similar system,oxygen transfer rate is uniquely correlated with dissipation rate of energy. Simulation or scale-up equation governing oxygen transfer rate and dissipation rate of energy has been developed in the present work.

Item Type:	Journal Article
Publication:	Bioresource Technology
Publisher:	Elesevier Science
Additional Information:	Copyright belongs to the Elesevier Science.
Keywords:	Dimensional analysis;Energy dissipation rate;Oxygen transfer;Rotational speed;Surface aeration
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	12 Jan 2010 08:43
Last Modified:	19 Sep 2010 05:30
URI:	http://eprints.iisc.ac.in/id/eprint/19920

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