A1 Journal article (refereed)
Fluid flow simulations meet high-speed video : Computer vision comparison of droplet dynamics (2018)


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


JYU authors or editors


Publication details

All authors or editors: Kulju, S.; Riegger, L.; Koltay, P.; Mattila, Keijo; Hyväluoma, J.

Journal or series: Journal of Colloid and Interface Science

ISSN: 0021-9797

eISSN: 1095-7103

Publication year: 2018

Volume: 522

Issue number: 0

Pages range: 48-56

Publisher: Elsevier; Academic Press

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1016/j.jcis.2018.03.053

Publication open access: Not open

Publication channel open access: 

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/57427


Abstract

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.


Keywords: drops; hydrodynamics; simulation; experiments; video recording; computer vision

Free keywords: Lattice Boltzmann; droplet; high-speed video; experimental; hydrophobic


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Related projects


Ministry reporting: Yes

Reporting Year: 2018

JUFO rating: 1


Last updated on 2024-08-01 at 16:01