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Mass Distribution Studies in Effervescent Sprays

Gadgil, Hrishikesh and Dolatabadi, Ali and Raghunandan, BN (2011) Mass Distribution Studies in Effervescent Sprays. In: Atomization and Sprays, 21 (5). pp. 375-390.

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Official URL: http://www.dl.begellhouse.com/journals/6a7c7e10642...

Abstract

An experimental study on liquid mass distribution in effervescent sprays using water and air as working fluids is presented in this paper. Optical patternation and techniques of image processing are employed for analyzing the spray. The flow regime inside the effervescent atomizer largely dictates the mass distribution patterns. The patterns are seen to vary from concentrated, poorly atomized liquid lumps to uniformly distributed, fine droplets as the flow regime changes from bubbly flow to annular flow. A large variety of instantaneous spray patterns are observed in bubbly flow regime indicating a highly unsteady atomization process. However, relatively better consistency in spray patterns is observed at higher gas flow rates. Thus, the degree of unsteadiness gradually diminishes as gas flow rate is increased. The axial evolution of the spray in annular mode shows good mixing of liquid and gas across the interface.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Begell House Publishing Inc.
Keywords: twin-fluid atomization;effervescent atomizers;optical patternation;mechanical patternation
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 30 Mar 2012 07:40
Last Modified: 30 Mar 2012 07:40
URI: http://eprints.iisc.ernet.in/id/eprint/44202

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