Особенности теплообмена при пузырьковом кипении в электроконвективном потоке
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ЧЕРНИКА, И.; БОЛОГА, Мирча; МАРДАРСКИЙ, О.; КОЖЕВНИКОВ, Игорь. Особенности теплообмена при пузырьковом кипении в электроконвективном потоке. In: Электронная обработка материалов. 2019, nr. 2(55), pp. 44-51. ISSN 0013-5739.
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Электронная обработка материалов
Numărul 2(55) / 2019 / ISSN 0013-5739 /ISSNe 2345-1718

Особенности теплообмена при пузырьковом кипении в электроконвективном потоке


CZU: 536.248.2
Pag. 44-51

Черника И., Болога Мирча, Мардарский О., Кожевников Игорь
 
Институт прикладной физики
 
Disponibil în IBN: 5 mai 2019


Rezumat

Изучено влияние напряженности электрического поля и межэлектродного расстояния на основные параметры процесса кипения в условиях электрогидродинамического потока. Установлено, что с увеличением плотности теплового потока влияние поля ослабевает. Выявлено оптимальное межэлектродное расстояние, при котором достигается наиболее интенсивная теплоотдача. На основе визуальных наблюдений и скоростной киносъемки процесса анализируется гидродинамическая картина двухфазного потока во взаимосвязи с интенсивностью теплообмена. Получены расчетные соотношения, которые удовлетворительно согласуются с результатами эксперимента

The effect of the electric field strength and interelectrode gap distance on the main parameters of the boiling process under electrohydrodynamic flow conditions is studied. It is established that an increase of the heat flux density results in a decrease of the field effect. The optimal interelectrode gap distance corresponding to the maximum heat transfer is found. The hydrodynamics of the two-phase flow and its influence on the heat transfer intensity is analyzed on the base of visual observations and high-speed filming of the process. The calculated dependences are in satisfactory agreement with the experimental results.

Cuvinte-cheie
кипение, паровые пузыри, тепловой поток, напряженность электрического поля, коэффициент теплоотдачи, температурный напор, теплообмен, гидродинамика,

boiling, vapor bubbles, Heat flux, electric field intensity, coefficient of heat transfer, temperature head, heat transfer, hydrodynamics

BibTeX Export

@article{ibn_104750,
author = {Autor, N.},
title = {<p>Феномен забвения в структуре исторической памяти: социально-философский аспект</p>},
collection = {Ştiinţă, educaţie, cultură },
year = {2019},
volume = {Vol.2},
pages = {223-227},
abstract = {(EN) <p>The basis of human activity, creativity and development is memory. Memory and life are indissoluble unity. Memory provides food for building our life stories. It gives integrity to our biography and history of life. The purpose of this article is to examine the nature of oblivion in the structure of historical memory and to determine its constructive possibilities in the creation and development of memory culture. Oblivion is the loss of memory about someone or about something. That is, it is the opposite concept of memory, which implies its absence. However, historical memory cannot exist without oblivion. It is the creative &quot;moment of oblivion&quot; that is constructive for the creation of social practices of the future, clearing them from the destructive stratification of the experience of past events. At the same time, distorted, superficial and unjustified oblivion can lead to the loss of creative functions, exaggerating them into mixed universal settings. The role of memory in the creation of the present and modeling of the future is extremely great, no new technology will not replace living human memories, will not provide an opportunity to take into account the previous existential experience of the individual. Man has no control over time, but he can significantly affect his present and future.</p>},
url = {https://ibn.idsi.md/vizualizare_articol/104750},
keywords = {historical memory, oblivion, past, personality, creativity}
}