Secondary atomization of water-in-oil emulsion drops impinging on a heated surface in the film boiling regime; International Journal of Heat and Mass Transfer; Vol. 165, Pt. B
| Parent link: | International Journal of Heat and Mass Transfer Vol. 165, Pt. B.— 2021.— [120672, 10 p.] |
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| Institution som forfatter: | |
| Andre forfattere: | , , , , , |
| Summary: | Title screen The present study experimentally examines the secondary atomization arising from the impingement of a water-in-oil emulsion drop onto a hot sapphire glass surface. The main aim of this study is to characterize secondary droplets emerged from the rim and lamella disruption. Drop impacts of n-dodecane and emulsions with a water volume content of 1.98%, 4.95%, 9.90% and 19.80% have been observed using a high-speed video system. The impact velocity and the target initial temperature have been varied. It is shown that the maximum spreading diameter of the impinging drop, the typical dimensionless diameter of the secondary drops, as well as the number of secondary drops correlate well with the Weber number for a pure liquid. Corresponding scaling relations Dmax∼D0We1/2, D32∼D0We−1/2 and N∼We3/2 in the limit We≫1 are derived by considering the dynamics of spreading and breakup. The size of the secondary drops is reduced significantly for high emulsion concentrations. This effect is explained by the stabilizing role of the water drops in the emulsion, whose surface tension is much higher than the surface tension of the bulk liquid. Режим доступа: по договору с организацией-держателем ресурса |
| Sprog: | engelsk |
| Udgivet: |
2021
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| Fag: | |
| Online adgang: | https://doi.org/10.1016/j.ijheatmasstransfer.2020.120672 |
| Format: | MixedMaterials Electronisk Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663371 |
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| 200 | 1 | |a Secondary atomization of water-in-oil emulsion drops impinging on a heated surface in the film boiling regime |f M. V. Piskunov, J. Breitenbach, J. B. Schmidt [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 50 tit.] | ||
| 330 | |a The present study experimentally examines the secondary atomization arising from the impingement of a water-in-oil emulsion drop onto a hot sapphire glass surface. The main aim of this study is to characterize secondary droplets emerged from the rim and lamella disruption. Drop impacts of n-dodecane and emulsions with a water volume content of 1.98%, 4.95%, 9.90% and 19.80% have been observed using a high-speed video system. The impact velocity and the target initial temperature have been varied. It is shown that the maximum spreading diameter of the impinging drop, the typical dimensionless diameter of the secondary drops, as well as the number of secondary drops correlate well with the Weber number for a pure liquid. Corresponding scaling relations Dmax∼D0We1/2, D32∼D0We−1/2 and N∼We3/2 in the limit We≫1 are derived by considering the dynamics of spreading and breakup. The size of the secondary drops is reduced significantly for high emulsion concentrations. This effect is explained by the stabilizing role of the water drops in the emulsion, whose surface tension is much higher than the surface tension of the bulk liquid. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t International Journal of Heat and Mass Transfer | ||
| 463 | |t Vol. 165, Pt. B |v [120672, 10 p.] |d 2021 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a drop impact | |
| 610 | 1 | |a emulsion | |
| 610 | 1 | |a film boiling | |
| 610 | 1 | |a secondary atomization | |
| 610 | 1 | |a long-wave | |
| 610 | 1 | |a marangoni instability | |
| 610 | 1 | |a Rayleigh-Taylor instability | |
| 701 | 1 | |a Piskunov |b M. V. |c specialist in the field of thermal engineering |c engineer of Tomsk Polytechnic University |f 1991- |g Maksim Vladimirovich |3 (RuTPU)RU\TPU\pers\34151 |9 17691 | |
| 701 | 1 | |a Breitenbach |b J. |g Jan | |
| 701 | 1 | |a Schmidt |b J. B. |g Benedikt | |
| 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 | |
| 701 | 1 | |a Tropea |b C. |g Cameron | |
| 701 | 1 | |a Roisman |b I. V. |g Ilia | |
| 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 |
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| 856 | 4 | |u https://doi.org/10.1016/j.ijheatmasstransfer.2020.120672 | |
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