The boundary of “diffusion – concentration gravitational convection” regime change in the isothermal ternary gas mixture of methane-butane-difluorodichlor-methane with various compositions in vertical cylindrical channels


Views: 97 / PDF downloads: 62

Authors

  • В.Н. Косов
  • О. Федоренко

DOI:

https://doi.org/10.32523/2616-6836-2018-124-3-8-13

Abstract

Analysis of experimental data on diffusion in a ternary mixture of methane –butane–dichlorodifluoromethane
showed that conditions of the convective instability can be realized in the system, which leads to the appearance of specific currents enriched by the component with the highest molecular weight. Such mixing is atypical for multicomponent diffusion mass transfer. To establish the conditions associated with the change in the “diffusion–concentration gravitational convection” regimes, a calculation methodthat makes it possible to determine the boundary of the kinetic transition in vertical cylindrical
channelsis proposed within the framework of stability theory.The proposed approach was compared with the experimental data and showed sufficient reliability to determine the regions of diffusion and concentration convection at different compositions of the mixture under investigation.

Downloads

Published

2022-07-04

How to Cite

Косов, В. ., & Федоренко, О. (2022). The boundary of “diffusion – concentration gravitational convection” regime change in the isothermal ternary gas mixture of methane-butane-difluorodichlor-methane with various compositions in vertical cylindrical channels. BULLETIN OF THE L.N. GUMILYOV EURASIAN NATIONAL UNIVERSITY. PHYSICS. ASTRONOMY SERIES, 124(3), 8–13. https://doi.org/10.32523/2616-6836-2018-124-3-8-13

Issue

Vol. 124 No. 3 (2018)

Section

Статьи