Gas-Vapor Mixture Temperature in the Near-Surface Layer of a Rapidly-Evaporating Water Droplet
Mathematical modeling of the heat and mass transfer processes in the evaporating droplet−high-temperature gas medium system is difficult due to the need to describe the dynamics of the formation of the quasi-steady temperature field of evaporating droplets, as well as of a gas-vapor buffer...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-08-01
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| Series: | Entropy |
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| Online Access: | https://www.mdpi.com/1099-4300/21/8/803 |
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| author | Dmitry Antonov Roman Volkov Pavel Strizhak |
| author_facet | Dmitry Antonov Roman Volkov Pavel Strizhak |
| author_sort | Dmitry Antonov |
| collection | DOAJ |
| description | Mathematical modeling of the heat and mass transfer processes in the evaporating droplet−high-temperature gas medium system is difficult due to the need to describe the dynamics of the formation of the quasi-steady temperature field of evaporating droplets, as well as of a gas-vapor buffer layer around them and in their trace during evaporation in high-temperature gas flows. We used planar laser-induced fluorescence (PLIF) and laser-induced phosphorescence (LIP). The experiments were conducted with water droplets (initial radius 1−2 mm) heated in a hot air flow (temperature 20−500 °C, velocity 0.5−6 m/s). Unsteady temperature fields of water droplets and the gas-vapor mixture around them were recorded. High inhomogeneity of temperature fields under study has been validated. To determine the temperature in the so called dead zones, we solved the problem of heat transfer, in which the temperature in boundary conditions was set on the basis of experimental values. |
| first_indexed | 2024-04-11T21:54:34Z |
| format | Article |
| id | doaj.art-03eb0feea65d4c4f9aa246640a1fdd86 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-04-11T21:54:34Z |
| publishDate | 2019-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-03eb0feea65d4c4f9aa246640a1fdd862022-12-22T04:01:09ZengMDPI AGEntropy1099-43002019-08-0121880310.3390/e21080803e21080803Gas-Vapor Mixture Temperature in the Near-Surface Layer of a Rapidly-Evaporating Water DropletDmitry Antonov0Roman Volkov1Pavel Strizhak2Power Engineering Institute, National Research Tomsk Polytechnic University, 634050 Tomsk, RussiaPower Engineering Institute, National Research Tomsk Polytechnic University, 634050 Tomsk, RussiaPower Engineering Institute, National Research Tomsk Polytechnic University, 634050 Tomsk, RussiaMathematical modeling of the heat and mass transfer processes in the evaporating droplet−high-temperature gas medium system is difficult due to the need to describe the dynamics of the formation of the quasi-steady temperature field of evaporating droplets, as well as of a gas-vapor buffer layer around them and in their trace during evaporation in high-temperature gas flows. We used planar laser-induced fluorescence (PLIF) and laser-induced phosphorescence (LIP). The experiments were conducted with water droplets (initial radius 1−2 mm) heated in a hot air flow (temperature 20−500 °C, velocity 0.5−6 m/s). Unsteady temperature fields of water droplets and the gas-vapor mixture around them were recorded. High inhomogeneity of temperature fields under study has been validated. To determine the temperature in the so called dead zones, we solved the problem of heat transfer, in which the temperature in boundary conditions was set on the basis of experimental values.https://www.mdpi.com/1099-4300/21/8/803high-temperature gaseswater droplettemperature fieldvapor buffer layerplanar laser-induced fluorescencelaser-induced phosphorescence |
| spellingShingle | Dmitry Antonov Roman Volkov Pavel Strizhak Gas-Vapor Mixture Temperature in the Near-Surface Layer of a Rapidly-Evaporating Water Droplet Entropy high-temperature gases water droplet temperature field vapor buffer layer planar laser-induced fluorescence laser-induced phosphorescence |
| title | Gas-Vapor Mixture Temperature in the Near-Surface Layer of a Rapidly-Evaporating Water Droplet |
| title_full | Gas-Vapor Mixture Temperature in the Near-Surface Layer of a Rapidly-Evaporating Water Droplet |
| title_fullStr | Gas-Vapor Mixture Temperature in the Near-Surface Layer of a Rapidly-Evaporating Water Droplet |
| title_full_unstemmed | Gas-Vapor Mixture Temperature in the Near-Surface Layer of a Rapidly-Evaporating Water Droplet |
| title_short | Gas-Vapor Mixture Temperature in the Near-Surface Layer of a Rapidly-Evaporating Water Droplet |
| title_sort | gas vapor mixture temperature in the near surface layer of a rapidly evaporating water droplet |
| topic | high-temperature gases water droplet temperature field vapor buffer layer planar laser-induced fluorescence laser-induced phosphorescence |
| url | https://www.mdpi.com/1099-4300/21/8/803 |
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