Fluid flow simulations meet high-speed video: Computer vision comparison of droplet dynamics
| Autor: | Peter Koltay, Sampo Kulju, Keijo Mattila, L. Riegger, Jari Hyväluoma |
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| Rok vydání: | 2017 |
| Předmět: |
Scheme (programming language)
experimental Computer science Lattice Boltzmann methods 02 engineering and technology 01 natural sciences computer vision 010305 fluids & plasmas Physics::Fluid Dynamics Biomaterials Colloid and Surface Chemistry 0103 physical sciences Fluid dynamics Computer vision algorithms simulointi konenäkö Computer vision hydrophobic computer.programming_language ta113 videokuvaus ta114 business.industry Multiphase flow Experimental validation simulation 021001 nanoscience & nanotechnology Lattice Boltzmann pisarat Surfaces Coatings and Films Electronic Optical and Magnetic Materials High speed video Dynamics (music) high-speed video kokeet (tutkimustoiminta) hydrodynamiikka droplet Artificial intelligence 0210 nano-technology business computer |
| Zdroj: | Journal of colloid and interface science. 522 |
| ISSN: | 1095-7103 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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