Interaction of Liquid Droplets in Gas and Vapor Flows
We investigated the conditions, characteristics, and outcomes of liquid droplet interaction in the gas medium using video frame processing. The frequency of different droplet collision outcomes and their characteristics were determined. Four interaction regimes were identified: bounce, separation, c...
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| Format: | Article |
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MDPI AG
2019-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/22/4256 |
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| author | A. V. Demidovich S. S. Kralinova P. P. Tkachenko N. E. Shlegel R. S. Volkov |
| author_facet | A. V. Demidovich S. S. Kralinova P. P. Tkachenko N. E. Shlegel R. S. Volkov |
| author_sort | A. V. Demidovich |
| collection | DOAJ |
| description | We investigated the conditions, characteristics, and outcomes of liquid droplet interaction in the gas medium using video frame processing. The frequency of different droplet collision outcomes and their characteristics were determined. Four interaction regimes were identified: bounce, separation, coalescence, and disruption. Collision regime maps were drawn up using the Weber, Reynolds, Ohnesorge, Laplace, and capillary numbers, as well as dimensionless linear and angular parameters of interaction. Significant differences were established between interaction maps under ideal conditions (two droplets colliding without a possible impact of the neighboring ones) and collision of droplets as aerosol elements. It was shown that the Weber number could not be the only criterion for changing the collision mode, and sizes and concentration of droplets in aerosols influence collision modes. It was established that collisions of droplets in a gaseous medium could lead to an increase in the liquid surface area by 1.5−5 times. Such a large-scale change in the surface area of the liquid significantly intensifies heat transfer and phase transformations in energy systems. |
| first_indexed | 2024-04-14T00:31:48Z |
| format | Article |
| id | doaj.art-362565f1dc2c4173bcc5c123cfb667cd |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-14T00:31:48Z |
| publishDate | 2019-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-362565f1dc2c4173bcc5c123cfb667cd2022-12-22T02:22:30ZengMDPI AGEnergies1996-10732019-11-011222425610.3390/en12224256en12224256Interaction of Liquid Droplets in Gas and Vapor FlowsA. V. Demidovich0S. S. Kralinova1P. P. Tkachenko2N. E. Shlegel3R. S. Volkov4Power Engineering School, National Research Tomsk Polytechnic University, Tomsk 634050, RussiaPower Engineering School, National Research Tomsk Polytechnic University, Tomsk 634050, RussiaPower Engineering School, National Research Tomsk Polytechnic University, Tomsk 634050, RussiaPower Engineering School, National Research Tomsk Polytechnic University, Tomsk 634050, RussiaPower Engineering School, National Research Tomsk Polytechnic University, Tomsk 634050, RussiaWe investigated the conditions, characteristics, and outcomes of liquid droplet interaction in the gas medium using video frame processing. The frequency of different droplet collision outcomes and their characteristics were determined. Four interaction regimes were identified: bounce, separation, coalescence, and disruption. Collision regime maps were drawn up using the Weber, Reynolds, Ohnesorge, Laplace, and capillary numbers, as well as dimensionless linear and angular parameters of interaction. Significant differences were established between interaction maps under ideal conditions (two droplets colliding without a possible impact of the neighboring ones) and collision of droplets as aerosol elements. It was shown that the Weber number could not be the only criterion for changing the collision mode, and sizes and concentration of droplets in aerosols influence collision modes. It was established that collisions of droplets in a gaseous medium could lead to an increase in the liquid surface area by 1.5−5 times. Such a large-scale change in the surface area of the liquid significantly intensifies heat transfer and phase transformations in energy systems.https://www.mdpi.com/1996-1073/12/22/4256aerosolgas and vapor flowsdropletscollisionsinteraction regime mapsrelative droplet concentration |
| spellingShingle | A. V. Demidovich S. S. Kralinova P. P. Tkachenko N. E. Shlegel R. S. Volkov Interaction of Liquid Droplets in Gas and Vapor Flows Energies aerosol gas and vapor flows droplets collisions interaction regime maps relative droplet concentration |
| title | Interaction of Liquid Droplets in Gas and Vapor Flows |
| title_full | Interaction of Liquid Droplets in Gas and Vapor Flows |
| title_fullStr | Interaction of Liquid Droplets in Gas and Vapor Flows |
| title_full_unstemmed | Interaction of Liquid Droplets in Gas and Vapor Flows |
| title_short | Interaction of Liquid Droplets in Gas and Vapor Flows |
| title_sort | interaction of liquid droplets in gas and vapor flows |
| topic | aerosol gas and vapor flows droplets collisions interaction regime maps relative droplet concentration |
| url | https://www.mdpi.com/1996-1073/12/22/4256 |
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