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231224s2016 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.5b03848
|2 doi
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
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|a Lee, Jae Bong
|e verfasserin
|4 aut
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|a Energy Budget of Liquid Drop Impact at Maximum Spreading
|b Numerical Simulations and Experiments
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|c 2016
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 08.06.2016
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|a Date Revised 09.02.2016
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The maximum spreading of an impinging droplet on a rigid surface is studied for low to high impact velocity, until the droplet starts splashing. We investigate experimentally and numerically the role of liquid properties, such as surface tension and viscosity, on drop impact using three liquids. It is found that the use of the experimental dynamic contact angle at maximum spreading in the Kistler model, which is used as a boundary condition for the CFD-VOF calculation, gives good agreement between experimental and numerical results. Analytical models commonly used to predict the boundary layer thickness and time at maximum spreading are found to be less correct, meaning that energy balance models relying on these relations have to be considered with care. The time of maximum spreading is found to depend on both the impact velocity and surface tension, and neither dependency is predicted correctly in common analytical models. The relative proportion of the viscous dissipation in the total energy budget increases with impact velocity with respect to surface energy. At high impact velocity, the contribution of surface energy, even before splashing, is still substantial, meaning that both surface energy and viscous dissipation have to be taken into account, and scaling laws depending only on viscous dissipation do not apply. At low impact velocity, viscous dissipation seems to play an important role in low-surface-tension liquids such as ethanol
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Derome, Dominique
|e verfasserin
|4 aut
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|a Dolatabadi, Ali
|e verfasserin
|4 aut
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| 700 |
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|a Carmeliet, Jan
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 32(2016), 5 vom: 09. Feb., Seite 1279-88
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|x 1520-5827
|7 nnns
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| 773 |
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|g volume:32
|g year:2016
|g number:5
|g day:09
|g month:02
|g pages:1279-88
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|u http://dx.doi.org/10.1021/acs.langmuir.5b03848
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