Выдержка
In the assessment of the scale of impact on the flame combustion, one of the most challenging factors is the influence of wind on the trajectory of fire extinguishing compositions in the gas medium during water discharge from aircraft. To predict the effect of surface transformation of free-falling volumes of water in the form of jets, drops and arrays, numerical modeling tools are essential. In this paper, the physical and mathematical models are developed, and empirical constants and dependences are calculated to take into account the size and shape of the drops in the reference points of the registration area. The results of our previous experiments and mathematical modeling both for the displacement of motion trajectories and for the coverage area of the model combustion center are found to fairly correspond. The ratios (characterizing the efficiency of typical systems of spraying and discharge) of water volumes entering the required zone of the model combustion center to total supply have been calculated. Using the developed model, the main characteristics of the studied entrainment of droplets, arrays and aerosols at the maximum possible air flow rates (up to 20 m/s) specific for hurricanes have been predicted. On the basis of the obtained approximations, the conditions of moderate and significant influence of a group of factors on the characteristics of liquid fragments entrainment have been predicted: The size and velocity, the air flow rate, the conditions of motion of an array, droplets or an aerosol cloud.
| Язык оригинала | Английский |
|---|---|
| Название основной публикации | International Youth Scientific Conference "Heat and Mass Transfer in the Thermal Control System of Technical and Technological Energy Equipment", HMTTSC 2019 |
| Редакторы | Geniy Kuznetsov, Evgeniya Orlova, Dmitry Feoktistov |
| Издатель | American Institute of Physics Inc. |
| ISBN (электронное издание) | 9780735418783 |
| DOI | |
| Состояние | Опубликовано - 9 авг 2019 |
| Событие | International Youth Scientific Conference on Heat and Mass Transfer in the Thermal Control System of Technical and Technological Energy Equipment 2019, HMTTSC 2019 - Tomsk, Российская Федерация Продолжительность: 23 апр 2019 → 25 апр 2019 |
Серия публикаций
| Название | AIP Conference Proceedings |
|---|---|
| Том | 2135 |
| ISSN (печатное издание) | 0094-243X |
| ISSN (электронное издание) | 1551-7616 |
Конференция
| Конференция | International Youth Scientific Conference on Heat and Mass Transfer in the Thermal Control System of Technical and Technological Energy Equipment 2019, HMTTSC 2019 |
|---|---|
| Страна | Российская Федерация |
| Город | Tomsk |
| Период | 23.4.19 → 25.4.19 |
Отпечаток
ASJC Scopus subject areas
- Physics and Astronomy(all)
Цитировать
Numerical simulation of entrainment of water fragments from the zone of localization of combustion and pyrolysis of forest fuel materials by air flow. / Antonov, D. V.; Atroshenko, Yu K.; Kopylov, N. P.; Khasanov, I. R.
International Youth Scientific Conference "Heat and Mass Transfer in the Thermal Control System of Technical and Technological Energy Equipment", HMTTSC 2019. ред. / Geniy Kuznetsov; Evgeniya Orlova; Dmitry Feoktistov. American Institute of Physics Inc., 2019. 020003 (AIP Conference Proceedings; Том 2135).Результат исследований: Материалы для книги/типы отчетов › Материалы для конференции
}
TY - GEN
T1 - Numerical simulation of entrainment of water fragments from the zone of localization of combustion and pyrolysis of forest fuel materials by air flow
AU - Antonov, D. V.
AU - Atroshenko, Yu K.
AU - Kopylov, N. P.
AU - Khasanov, I. R.
PY - 2019/8/9
Y1 - 2019/8/9
N2 - In the assessment of the scale of impact on the flame combustion, one of the most challenging factors is the influence of wind on the trajectory of fire extinguishing compositions in the gas medium during water discharge from aircraft. To predict the effect of surface transformation of free-falling volumes of water in the form of jets, drops and arrays, numerical modeling tools are essential. In this paper, the physical and mathematical models are developed, and empirical constants and dependences are calculated to take into account the size and shape of the drops in the reference points of the registration area. The results of our previous experiments and mathematical modeling both for the displacement of motion trajectories and for the coverage area of the model combustion center are found to fairly correspond. The ratios (characterizing the efficiency of typical systems of spraying and discharge) of water volumes entering the required zone of the model combustion center to total supply have been calculated. Using the developed model, the main characteristics of the studied entrainment of droplets, arrays and aerosols at the maximum possible air flow rates (up to 20 m/s) specific for hurricanes have been predicted. On the basis of the obtained approximations, the conditions of moderate and significant influence of a group of factors on the characteristics of liquid fragments entrainment have been predicted: The size and velocity, the air flow rate, the conditions of motion of an array, droplets or an aerosol cloud.
AB - In the assessment of the scale of impact on the flame combustion, one of the most challenging factors is the influence of wind on the trajectory of fire extinguishing compositions in the gas medium during water discharge from aircraft. To predict the effect of surface transformation of free-falling volumes of water in the form of jets, drops and arrays, numerical modeling tools are essential. In this paper, the physical and mathematical models are developed, and empirical constants and dependences are calculated to take into account the size and shape of the drops in the reference points of the registration area. The results of our previous experiments and mathematical modeling both for the displacement of motion trajectories and for the coverage area of the model combustion center are found to fairly correspond. The ratios (characterizing the efficiency of typical systems of spraying and discharge) of water volumes entering the required zone of the model combustion center to total supply have been calculated. Using the developed model, the main characteristics of the studied entrainment of droplets, arrays and aerosols at the maximum possible air flow rates (up to 20 m/s) specific for hurricanes have been predicted. On the basis of the obtained approximations, the conditions of moderate and significant influence of a group of factors on the characteristics of liquid fragments entrainment have been predicted: The size and velocity, the air flow rate, the conditions of motion of an array, droplets or an aerosol cloud.
UR - http://www.scopus.com/inward/record.url?scp=85071034609&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85071034609&partnerID=8YFLogxK
U2 - 10.1063/1.5120640
DO - 10.1063/1.5120640
M3 - Conference contribution
AN - SCOPUS:85071034609
T3 - AIP Conference Proceedings
BT - International Youth Scientific Conference "Heat and Mass Transfer in the Thermal Control System of Technical and Technological Energy Equipment", HMTTSC 2019
A2 - Kuznetsov, Geniy
A2 - Orlova, Evgeniya
A2 - Feoktistov, Dmitry
PB - American Institute of Physics Inc.
ER -