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Atomization and Sprays
Facteur d'impact: 1.262 Facteur d'impact sur 5 ans: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Imprimer: 1044-5110
ISSN En ligne: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v19.i8.60
pages 787-807

REVIEW OF DROP IMPACT MODELS AND VALIDATION WITH HIGH-VISCOSITY NEWTONIAN FLUIDS

G. German
School of Engineering and Electronics, The University of Edinburgh, The King's Buildings, Mayfield Road, Edinburgh, EH9 3JL
Volfango Bertola
Laboratory of Technical Physics, School of Engineering, University of Liverpool, Brownlow Hill, Liverpool L69 3GH, UK

RÉSUMÉ

A number of theoretical, empirical, and semiempirical models to predict the maximum diameter and the minimum apex height reached by a liquid drop on impact with a solid surface are assessed and compared to experimental measurements. Drop impact dynamics were measured for water-glycerol solutions with viscosities in the range from 0.056 to 0.925 Pa·s impacting from fall heights between 7.5 mm and 200 mm. Predictions of the more complex energy balance approach models agree closely with experimental results for relatively high-velocity impacts of low-viscosity fluids; however, the analysis of high-viscosity fluid drops at low impact velocities (where inertial deformation is small) highlights that most predictions deviate significantly from experimental results. Significantly improved predictions can be achieved through an empirical adjustment of one of the existing models.


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