Model for Predicting the Mean Drop Size in Effervescent Sprays

Gadgil, Hrishikesh P and Raghunandan, BN (2011) Model for Predicting the Mean Drop Size in Effervescent Sprays. In: Journal of Propulsion and Power, 27 (5). pp. 937-943.

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Abstract

This paper is focused on the development of a model for predicting the mean drop size in effervescent sprays. A combinatorial approach is followed in this modeling scheme, which is based on energy and entropy principles. The model is implemented in cascade in order to take primary breakup (due to exploding gas bubbles) and secondary breakup (due to shearing action of surrounding medium) into account. The approach in this methodology is to obtain the most probable drop size distribution by maximizing the entropy while satisfying the constraints of mass and energy balance. The comparison of the model predictions with the past experimental data is presented for validation. A careful experimental study is conducted over a wide range of gas-to-liquid ratios, which shows a good agreement with the model predictions: It is observed that the model gives accurate results in bubbly and annular flow regimes. However, discrepancies are observed in the transitional slug flow regime of the atomizer.

Item Type:	Journal Article
Publication:	Journal of Propulsion and Power
Publisher:	American Institute of Aeronautics and Astronautics
Additional Information:	Copyright of this article belongs to American Institute of Aeronautics and Astronautics.
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	08 Nov 2011 12:04
Last Modified:	08 Nov 2011 12:04
URI:	http://eprints.iisc.ac.in/id/eprint/41938

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