The transient separation of multicomponent mixtures in a cylindrical thermogravitational column
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URI (для ссылок/цитирований):
https://www.sciencedirect.com/science/article/pii/S0017931017340504?via%3Dihubhttps://elib.sfu-kras.ru/handle/2311/110859
Автор:
Sofia V. Kozlova
Ilya I. Ryzhkov
Коллективный автор:
Институт космических и информационных технологий
Кафедра прикладной математики и компьютерной безопасности
Дата:
2018-11Журнал:
International Journal of Heat and Mass TransferКвартиль журнала в Scopus:
Q1Квартиль журнала в Web of Science:
Q1Библиографическое описание:
Sofia V. Kozlova. The transient separation of multicomponent mixtures in a cylindrical thermogravitational column [Текст] / Sofia V. Kozlova, Ilya I. Ryzhkov // International Journal of Heat and Mass Transfer. — 2018. — Т. 126. — С. 660-669Аннотация:
This work deals with the transient separation of a multicomponent mixture in a cylindrical thermogravitational
column. The model describing the evolution of separation in vertical direction is derived and
solved analytically. It is assumed that the profiles of velocity and temperature in radial direction are
established and the forgotten effect as well as vertical diffusion in the column are ignored. The dependence
of separation and characteristic transient time on the ratio of inner and outer cylinders radii d is
obtained. The transient time tends to diffusion time along the column height when d approaches zero,
while it reduces to the transient time for a flat–plate column when d approaches unity. The analytical
results are compared with two–dimensional numerical simulation for binary and ternary mixtures,
and a good agreement is observed. It is concluded that for typical liquid mixtures, the decrease of radii
ratio between inner and outer cylinders results in a slight increase of separation and in a significant
increase of transient time.