Heat and Mass Transfer Processes and Evaporation of a Liquid Droplet on a Structured Surface; Energies; Vol. 16, iss. 22
| Parent link: | Energies.— .— Basel: MDPI AG Vol. 16, iss. 22.— 2023.— Article number 7505, 22 p. |
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| Інші автори: | , |
| Резюме: | Title screen The characteristics of water droplet heating and evaporation on structured hydrophobic and hydrophilic surfaces in the range of static contact angles from 73° to 155° were studied experimentally using high-speed video recording. Two fundamentally different technologies for applying coatings on a metal surface were used in comparison with the results on a polished surface. Microscopic studies were conducted to identify the features of the formed coatings. The wetting properties were characterized by means of the static contact angle and the contact angle hysteresis: on polished surface No. 1 (contact angle—73°, hysteresis—11°), on structured surface No. 2 (contact angle—125°, hysteresis—9°), and on structured surface No 3 (contact angle—155°, hysteresis—7°). The experimental dependences of the droplet evaporation rate on the different surfaces under normal conditions (ambient air temperature—293 K, atmospheric pressure, humidity—35%) were obtained. The evaporation regimes of droplets on the surfaces under study were identified. Water droplets evaporated in the pinning mode on surfaces No. 1 and No. 2. When a water droplet evaporated on surface No 3, the droplet was in the constant contact angle regime for ≈90% of its lifetime. Based on the experimental data obtained, a two-dimensional model of conjugate heat and mass transfer was developed, which describes the heating and evaporation of a liquid droplet on structured hydrophobic and hydrophilic surfaces at a wide range of contact angles. Satisfactory agreement was obtained between the numerical simulation results and experimental data. Using the model, the fields of temperature, concentration and other key characteristics were established at different points in time. Recommendations for its application in the development of gas–vapor–droplet applications were formulated Текстовый файл |
| Мова: | Англійська |
| Опубліковано: |
2023
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| Предмети: | |
| Онлайн доступ: | https://doi.org/10.3390/en16227505 |
| Формат: | Електронний ресурс Частина з книги |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=673852 |
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| 200 | 1 | |a Heat and Mass Transfer Processes and Evaporation of a Liquid Droplet on a Structured Surface |f Dmitrii V. Antonov, Anastasia G. Islamova, Evgeniya G. Orlova | |
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| 330 | |a The characteristics of water droplet heating and evaporation on structured hydrophobic and hydrophilic surfaces in the range of static contact angles from 73° to 155° were studied experimentally using high-speed video recording. Two fundamentally different technologies for applying coatings on a metal surface were used in comparison with the results on a polished surface. Microscopic studies were conducted to identify the features of the formed coatings. The wetting properties were characterized by means of the static contact angle and the contact angle hysteresis: on polished surface No. 1 (contact angle—73°, hysteresis—11°), on structured surface No. 2 (contact angle—125°, hysteresis—9°), and on structured surface No 3 (contact angle—155°, hysteresis—7°). The experimental dependences of the droplet evaporation rate on the different surfaces under normal conditions (ambient air temperature—293 K, atmospheric pressure, humidity—35%) were obtained. The evaporation regimes of droplets on the surfaces under study were identified. Water droplets evaporated in the pinning mode on surfaces No. 1 and No. 2. When a water droplet evaporated on surface No 3, the droplet was in the constant contact angle regime for ≈90% of its lifetime. Based on the experimental data obtained, a two-dimensional model of conjugate heat and mass transfer was developed, which describes the heating and evaporation of a liquid droplet on structured hydrophobic and hydrophilic surfaces at a wide range of contact angles. Satisfactory agreement was obtained between the numerical simulation results and experimental data. Using the model, the fields of temperature, concentration and other key characteristics were established at different points in time. Recommendations for its application in the development of gas–vapor–droplet applications were formulated | ||
| 336 | |a Текстовый файл | ||
| 461 | 1 | |t Energies |c Basel |n MDPI AG | |
| 463 | 1 | |t Vol. 16, iss. 22 |v Article number 7505, 22 p. |d 2023 | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a hydrophobic surfaces | |
| 610 | 1 | |a hydrophilic surfaces | |
| 610 | 1 | |a superhydrophobic surfaces | |
| 610 | 1 | |a liquid droplet | |
| 610 | 1 | |a conjugate heat and mass transfer | |
| 610 | 1 | |a evaporation | |
| 610 | 1 | |a model | |
| 700 | 1 | |a Antonov |b D. V. |c specialist in the field of heat and power engineering |c Associate Professor, Research Engineer at Tomsk Polytechnic University, Candidate of Physical and Mathematical Sciences |f 1996- |g Dmitry Vladimirovich |9 22322 | |
| 701 | 1 | |a Islamova |b A. G. |c specialist in the field of thermal engineering |c Engineer of Tomsk Polytechnic University |f 1993- |g Anastasiya Gomilievna |9 20239 | |
| 701 | 1 | |a Orlova |b E. G. |c specialist in the field of thermal engineering |c Associate Professor of Tomsk Polytechnic University, Candidate of Physical and Mathematical Sciences |f 1991- |g Evgeniya Georgievna |9 17697 | |
| 712 | 0 | 2 | |a National Research Tomsk Polytechnic University |c (2009- ) |9 27197 |4 570 |
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