Dissipative structures in thin films of cavitation-activated soot suspensions
URI (для ссылок/цитирований):
https://iopscience.iop.org/article/10.1088/1742-6596/1399/4/044073https://elib.sfu-kras.ru/handle/2311/142486
Автор:
Стебелева, О. П.
Кашкина, Л. В.
Петраковская, Е. А.
Никитина, С. Л.
Добросмыслов, С. С.
Рублев, Г. В.
Коллективный автор:
Инженерно-строительный институт
Политехнический институт
Кафедра проектирования зданий и экспертизы недвижимости
Кафедра теплотехники и гидрогазодинамики
Дата:
2019-12Журнал:
Journal of Physics: Conference SeriesКвартиль журнала в Scopus:
Q3Библиографическое описание:
Стебелева, О. П. Dissipative structures in thin films of cavitation-activated soot suspensions [Текст] / О. П. Стебелева, Л. В. Кашкина, Е. А. Петраковская, С. Л. Никитина, С. С. Добросмыслов, Г. В. Рублев // Journal of Physics: Conference Series: Conference Series. — 2019. — Т. 1399 (№ 4).Аннотация:
This paper presents analysis of optical images of films obtained by evaporation
(293 K) of a thin layer of low-concentrated (1% wt.) aqueous soot suspensions in a Petri dish.
Suspensions of wood, fullerene and diamond-containing (after detonation synthesis) soot were
prepared using hydrodynamic dispersion in a cavitation mixer with a wedge-shaped cavitator
with the rotor's angular velocity of rotation being 10000 rpm. The components of the
hydrodynamic dispersion process are turbulent micro-mixing and bubble cavitation. As a result
of intense turbulence, carbon suspensions assumed properties of non-equilibrium systems. The
images of an optical microscope revealed self-organized dissipative micron-sized structures in
the dried films being present there in the form of chain, branched and ring-shaped cluster
fractals of various dimensions that look very similar to nanotubes. The self-assembling effect
was identified for all the types of suspensions under study. The EPR method was used to study
the change in the electronic structure of soot resulting from the exposure to high temperatures
and pressures that occur when the cavitation bubbles collapse (cavitational activation). The
dynamics of changes in dissipative structures in the process of film drying was monitored.