Atomization in the acoustic field of a Hartmann whistle
Atomization in the acoustic field of a Hartmann whistle
The current work experimentally investigates the effect of Hartmann cavity acoustics on the atomization of droplet sprays. Initially, the experiments are conducted on a single droplet to understand its behavior in the sound field of a Hartmann whistle. The atomization studies on single droplet reveal that the existence of sound field causes the droplet to undergo large deformation and become irregular in shape. The degree of droplet deformation is quantified based on smaller circularity and larger Feret's diameter. The increase in cone angle of spray to a higher value in the presence of acoustics in comparison to its absence shows that the acoustics enhances the atomization. The stroboscopic visualization of sprays in the presence of acoustics further reveals the breakup of ligaments, large scatter as well as the formation of more number of droplets, indicating atomization enhancement
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Narayanan, S.
496a8ad5-626a-442f-b61a-cd2ab3f7731e
Srinivasan, K.
a5367aa3-c40e-4c3c-825e-2d150a3e40c5
Sundararajan, T.
9487d2ce-b852-4b8b-b5ce-b921e12ae640
15 April 2013
Narayanan, S.
496a8ad5-626a-442f-b61a-cd2ab3f7731e
Srinivasan, K.
a5367aa3-c40e-4c3c-825e-2d150a3e40c5
Sundararajan, T.
9487d2ce-b852-4b8b-b5ce-b921e12ae640
Narayanan, S., Srinivasan, K. and Sundararajan, T.
(2013)
Atomization in the acoustic field of a Hartmann whistle.
International Journal of Spray and Combustion Dynamics, 5 (1), .
(doi:10.1260/1756-8315.5.1.1).
Abstract
The current work experimentally investigates the effect of Hartmann cavity acoustics on the atomization of droplet sprays. Initially, the experiments are conducted on a single droplet to understand its behavior in the sound field of a Hartmann whistle. The atomization studies on single droplet reveal that the existence of sound field causes the droplet to undergo large deformation and become irregular in shape. The degree of droplet deformation is quantified based on smaller circularity and larger Feret's diameter. The increase in cone angle of spray to a higher value in the presence of acoustics in comparison to its absence shows that the acoustics enhances the atomization. The stroboscopic visualization of sprays in the presence of acoustics further reveals the breakup of ligaments, large scatter as well as the formation of more number of droplets, indicating atomization enhancement
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Published date: 15 April 2013
Organisations:
Inst. Sound & Vibration Research
Identifiers
Local EPrints ID: 353735
URI: http://eprints.soton.ac.uk/id/eprint/353735
ISSN: 1756-8277
PURE UUID: 9c2ec58e-0964-473c-9362-160c897a76f5
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Date deposited: 20 Jun 2013 09:14
Last modified: 14 Mar 2024 14:09
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Contributors
Author:
S. Narayanan
Author:
K. Srinivasan
Author:
T. Sundararajan
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