Fluid flow simulations meet high-speed video : Computer vision comparison of droplet dynamics
Kulju, S., Riegger, L., Koltay, P., Mattila, K., & Hyväluoma, J. (2018). Fluid flow simulations meet high-speed video : Computer vision comparison of droplet dynamics. Journal of Colloid and Interface Science, 522, 48-56. https://doi.org/10.1016/j.jcis.2018.03.053
Published inJournal of Colloid and Interface Science
© 2018 Elsevier Inc. This is a final draft version of an article whose final and definitive form has been published by Elsevier Inc. Published in this repository with the kind permission of the publisher.
Hypothesis While multiphase flows, particularly droplet dynamics, are ordinary in nature as well as in industrial processes, their mathematical and computational modelling continue to pose challenging research tasks - patent approaches for tackling them are yet to be found. The lack of analytical flow field solutions for non-trivial droplet dynamics hinders validation of computer simulations and, hence, their application in research problems. High-speed videos and computer vision algorithms can provide a viable approach to validate simulations directly against experiments. Experiments Droplets of water (or glycerol-water mixtures) impacting on both hydrophobic and superhydrophobic surfaces were imaged with a high-speed camera. The corresponding configurations were simulated using a lattice-Boltzmann multiphase scheme. Video frames from experiments and simulations were compared, by means of computer vision, over entire droplet impact events. Findings The proposed experimental validation procedure provides a detailed, dynamic one-on-one comparison of a droplet impact. The procedure relies on high-speed video recording of the experiments, computer vision, and on a software package for the analyzation routines. The procedure is able to quantitatively validate computer simulations against experiments and it is widely applicable to multiphase flow systems in general. ...
PublisherElsevier; Academic Press
Publication in research information system
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Related funder(s)European Commission
Funding program(s)FP7 (EU's 7th Framework Programme)
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about fundingThis work was financially supported by the European Community’s Seventh Framework programme NMP-2013-1.4-1 under Grant agreement No 604005 (SimPhoNy project).
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