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Published in: Journal of Visualization 2/2019

26-11-2018 | Regular Paper

Impact behaviors of a millimetric impinging drop on a superheated Al alloy surface

Authors: Daehee Kwon, Dongkuk Kang, Eunseop Yeom

Published in: Journal of Visualization | Issue 2/2019

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Abstract

The impact behaviors and boiling regimes of millimetric water droplets on an aluminum alloy are experimentally investigated with varying surface temperatures. Compared to the impact on the unheated surface, different impact phenomena are observed on the superheated surface, suggesting the existence of a vapor layer underneath the drop. The dynamic Leidenfrost point (at which the film boiling and contact boiling regimes are differentiated) is revealed, which is dependent on the Weber number. In addition, the spreading characteristic is estimated in terms of the maximum spreading diameter. The growth of the maximum spreading diameter and its dependency on the Weber number on the superheated surface are clearly identified and compared with the scaling law in the previous studies.

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Literature
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go back to reference Rein M (ed) (2002) Drop-surface interactions. Springer, ViennaMATH Rein M (ed) (2002) Drop-surface interactions. Springer, ViennaMATH
go back to reference Richter B, Dullenkopf K, Bauer HJ (2005) Investigation of secondary droplet characteristics produced by an isooctane drop chain impact onto a heated piston surface. Experiments in fluids. Springer, Berlin, pp 351–363 Richter B, Dullenkopf K, Bauer HJ (2005) Investigation of secondary droplet characteristics produced by an isooctane drop chain impact onto a heated piston surface. Experiments in fluids. Springer, Berlin, pp 351–363
Metadata
Title
Impact behaviors of a millimetric impinging drop on a superheated Al alloy surface
Authors
Daehee Kwon
Dongkuk Kang
Eunseop Yeom
Publication date
26-11-2018
Publisher
Springer Berlin Heidelberg
Published in
Journal of Visualization / Issue 2/2019
Print ISSN: 1343-8875
Electronic ISSN: 1875-8975
DOI
https://doi.org/10.1007/s12650-018-0538-7

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