Effect of gas pressure and temperature on the regimes of liquid droplet collisions
| Parent link: | Interfacial Phenomena and Heat Transfer Vol. 10, iss. 1.— 2022.— [P. 25-46] |
|---|---|
| Corporate Authors: | , |
| Other Authors: | , , , |
| Summary: | Title screen The paper presents experimental research findings for the critical conditions and integral characteristics of secondary atomization of liquid droplets when varying the gas medium pressure (0.9-5 atm) and temperature (20-200°C). The experiments were conducted with water droplets with initial temperatures of 20 and 80°C to investigate the contribution of heating the liquid and its evaporation to the interaction conditions and characteristics. We varied the impact angles, sizes, and velocities of droplets in a gas medium. Typical collision regimes were identified: bounce, coalescence, separation, and disruption. Liquid droplet collision regime maps using the dimensionless linear parameter of interaction and Weber number were produced. Specific aspects of droplet collisions were established at different pressures and temperatures of the gas medium. The ratios of liquid surface areas before and after droplet disruption were calculated. The findings were compared to known data of other authors. Conditions were shown under which the gas pressure and temperature significantly affect droplet collision regimes and transition boundaries between them, as well as droplet collision outcomes. |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1615/InterfacPhenomHeatTransfer.2022044027 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=668582 |
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| 200 | 1 | |a Effect of gas pressure and temperature on the regimes of liquid droplet collisions |f P. P. Tkachenko, A. G. Islamova, N. E. Shlegel, P. A. Strizhak | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 50 tit.] | ||
| 330 | |a The paper presents experimental research findings for the critical conditions and integral characteristics of secondary atomization of liquid droplets when varying the gas medium pressure (0.9-5 atm) and temperature (20-200°C). The experiments were conducted with water droplets with initial temperatures of 20 and 80°C to investigate the contribution of heating the liquid and its evaporation to the interaction conditions and characteristics. We varied the impact angles, sizes, and velocities of droplets in a gas medium. Typical collision regimes were identified: bounce, coalescence, separation, and disruption. Liquid droplet collision regime maps using the dimensionless linear parameter of interaction and Weber number were produced. Specific aspects of droplet collisions were established at different pressures and temperatures of the gas medium. The ratios of liquid surface areas before and after droplet disruption were calculated. The findings were compared to known data of other authors. Conditions were shown under which the gas pressure and temperature significantly affect droplet collision regimes and transition boundaries between them, as well as droplet collision outcomes. | ||
| 461 | |t Interfacial Phenomena and Heat Transfer | ||
| 463 | |t Vol. 10, iss. 1 |v [P. 25-46] |d 2022 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a droplet collisions | |
| 610 | 1 | |a interaction regimes | |
| 610 | 1 | |a pressure and temperature of gas medium | |
| 610 | 1 | |a collision regime maps | |
| 610 | 1 | |a disruption | |
| 610 | 1 | |a satellite droplets | |
| 701 | 1 | |a Tkachenko |b P. P. |g Pavel Petrovich | |
| 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 |3 (RuTPU)RU\TPU\pers\37306 | |
| 701 | 1 | |a Shlegel |b N. E. |c specialist in the field of heat and power engineering |c Research Engineer of Tomsk Polytechnic University |f 1995- |g Nikita Evgenjevich |3 (RuTPU)RU\TPU\pers\46675 | |
| 701 | 1 | |a Strizhak |b P. A. |c Specialist in the field of heat power energy |c Doctor of Physical and Mathematical Sciences (DSc), Professor of Tomsk Polytechnic University (TPU) |f 1985- |g Pavel Alexandrovich |3 (RuTPU)RU\TPU\pers\30871 |9 15117 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа энергетики |b Научно-образовательный центр И. Н. Бутакова (НОЦ И. Н. Бутакова) |3 (RuTPU)RU\TPU\col\23504 |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Исследовательская школа физики высокоэнергетических процессов |c (2017- ) |3 (RuTPU)RU\TPU\col\23551 |
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