Disintegration of large balls of water-based liquids in free fall through high-temperature gases
| Parent link: | Atomization and Sprays Vol. 27, iss. 10.— 2017.— [P. 893-911] |
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| Yhteisötekijä: | |
| Muut tekijät: | , , , |
| Yhteenveto: | Title screen This paper presents an experimental study of the transformation (i.e., deformation and disintegration) of liquid balls in free fall through a gaseous environment at temperatures from 300 to 1100 K. The experiments involve the use of the following liquids: water, NaCl solution, and a suspension with carbon particles; the initial volume of liquid balls ranges from 0.05 l to 1 l. We apply high-speed video cameras, Phantom V411 and Phantom Miro M310 (up to 6 ? 105 frames per second), and Tema Automotive software, providing the ability to track objects continuously. The study establishes the mechanism of deformation and disintegration of liquid balls. The following factors influence characteristics of these processes: the initial volume of liquid balls, their component composition, the velocity of the side airflow (wind), and the temperature of gases (i.e., air and combustion products). In addition, the Weber numbers are determined for the transitions between the transformation stages of the liquid balls. The determination of Weber numbers is necessary for illustrating the limiting conditions at which the breakup of liquid balls and the transition from one stage of deformation to another occur. The research illustrates the limitations of an increase in transverse and longitudinal sizes of liquid balls during deformation under conditions corresponding to extinguishing fires. The results substantiate the necessity of spraying water for covering a larger fire area. In the case of the local water discharge, batches of liquids transform to clouds consisting of droplets with small transverse sizes even after falling several dozens of meters. Combustion products heated up to high temperatures essentially decelerate a transition from the monolithic ball of water to the droplet cloud and limit its transverse size. This limitation is associated with the intensive evaporation and the formation of buffer vapor zones between combustion products and the droplet cloud. Режим доступа: по договору с организацией-держателем ресурса |
| Kieli: | englanti |
| Julkaistu: |
2017
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| Aiheet: | |
| Linkit: | http://dx.doi.org/10.1615/AtomizSpr.2017018526 |
| Aineistotyyppi: | Elektroninen Kirjan osa |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=656793 |
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| 200 | 1 | |a Disintegration of large balls of water-based liquids in free fall through high-temperature gases |f P. A. Strizhak, R. S. Volkov, M. V. Zabelin, M. V. Piskunov | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 330 | |a This paper presents an experimental study of the transformation (i.e., deformation and disintegration) of liquid balls in free fall through a gaseous environment at temperatures from 300 to 1100 K. The experiments involve the use of the following liquids: water, NaCl solution, and a suspension with carbon particles; the initial volume of liquid balls ranges from 0.05 l to 1 l. We apply high-speed video cameras, Phantom V411 and Phantom Miro M310 (up to 6 ? 105 frames per second), and Tema Automotive software, providing the ability to track objects continuously. The study establishes the mechanism of deformation and disintegration of liquid balls. The following factors influence characteristics of these processes: the initial volume of liquid balls, their component composition, the velocity of the side airflow (wind), and the temperature of gases (i.e., air and combustion products). In addition, the Weber numbers are determined for the transitions between the transformation stages of the liquid balls. The determination of Weber numbers is necessary for illustrating the limiting conditions at which the breakup of liquid balls and the transition from one stage of deformation to another occur. The research illustrates the limitations of an increase in transverse and longitudinal sizes of liquid balls during deformation under conditions corresponding to extinguishing fires. The results substantiate the necessity of spraying water for covering a larger fire area. In the case of the local water discharge, batches of liquids transform to clouds consisting of droplets with small transverse sizes even after falling several dozens of meters. Combustion products heated up to high temperatures essentially decelerate a transition from the monolithic ball of water to the droplet cloud and limit its transverse size. This limitation is associated with the intensive evaporation and the formation of buffer vapor zones between combustion products and the droplet cloud. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Atomization and Sprays | ||
| 463 | |t Vol. 27, iss. 10 |v [P. 893-911] |d 2017 | ||
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a вода | |
| 610 | 1 | |a суспензии | |
| 610 | 1 | |a растворы | |
| 610 | 1 | |a трансформация | |
| 610 | 1 | |a высокотемпературные газы | |
| 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 Volkov |b R. S. |c specialist in the field of power engineering |c Associate Professor of the Tomsk Polytechnic University, candidate of technical Sciences |f 1987- |g Roman Sergeevich |3 (RuTPU)RU\TPU\pers\33926 |9 17499 | |
| 701 | 1 | |a Zabelin |b M. V. |c specialist in the field of heat and power engineering |c engineer of Tomsk Polytechnic University |f 1991- |g Maksim Valerievich |3 (RuTPU)RU\TPU\pers\35868 | |
| 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 | |
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| 856 | 4 | |u http://dx.doi.org/10.1615/AtomizSpr.2017018526 | |
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