Mathematical modeling of rivulet flow driven by variable gravity and gas flow in a minichannel

M. V. Bartashevich, V. V. Kuznetsov, O. A. Kabov

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

8 Цитирования (Scopus)

Аннотация

Rivulet flows are a special type of thin film flows with a bounded width. The use of rivulet flows is very perspective in various types of process equipment such as evaporators. The flow dynamics in rivulets has some peculiarities, the investigation of which allows understanding the gist of possible mechanism of enhancement of heat transfer. In the present work a mathematical model for the rivulet flow in conditions of a variable gravity has been elaborated. The liquid flow takes place in a slot between two plates and is caused by a co-current gas flow. The numerical calculations of the flow parameters depending from the gravity forces have been made. The analytical formula for connection of the main rivulet parameters (width, contact angle, liquid flow rate ...) in a linearized approach has been derived. The comparison of numerical results with experimental data obtained during 44 Parabolic Flights campaign of the European Space Agency has been carried out. Liquid film of FC-72 driven by the Nitrogen gas has been studied in experiments. Force balance is changed during a parabolic flight and due to surface tension effect the liquid film in a horizontal minichannel 40 mm width became a flattened rivulet 9 mm width at microgravity.

Язык оригиналаАнглийский
Название основной публикацииProceedings of the 6th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2008
Страницы307-312
Число страниц6
ИзданиеPART A
DOI
СостояниеОпубликовано - 1 дек 2008
Событие6th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2008 - Darmstadt, Германия
Продолжительность: 23 июн 200825 июн 2008

Другое

Другое6th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2008
СтранаГермания
ГородDarmstadt
Период23.6.0825.6.08

ASJC Scopus subject areas

  • Process Chemistry and Technology

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  • Цитировать

    Bartashevich, M. V., Kuznetsov, V. V., & Kabov, O. A. (2008). Mathematical modeling of rivulet flow driven by variable gravity and gas flow in a minichannel. В Proceedings of the 6th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2008 (PART A ред., стр. 307-312) https://doi.org/10.1115/ICNMM2008-62135