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Numerical modelling of convective diffusion in three-component gas mixtures

DOI: 10.1615/ICHMT.2015.THMT-15.510
pages 283-286

Dauren B. Zhakebayev
Departament of Mathematical and computer modelling, Kazakh National University named after al- Farabi, al-Farabi 71, 050012 Almaty, Kazakhstan

A.P. Kizbayev
Department of Mathematical and Computer modeling, Kazakh National University named after al-Farabi, al-Farabi 71, 050038, Almaty, Kazakhstan

V. N. Kosov
Institute of Experimental and Theoretical Physics, Kazakh National University named after al-Farabi, al-Farabi 71, 050038, Almaty, Kazakhstan

Olga V. Fedorenko
Institute of Experimental and Theoretical Physics, Kazakh National University named after al-Farabi, al-Farabi 71, 050038, Almaty, Kazakhstan

Sinopsis

This paper considers the numerical modeling of convective diffusion in three-component gas mixtures. The experimental results on the study of unstable diffusion process at different pressures is carried out based on the numerical solution of unsteady filtered Navier-Stokes equation, the continuity equation and equation for the concentration. Comparison of the results of numerical simulations with experimental data for the system 0.4688 He + 0.5312 Ar - N2 showed that the intensity of convective mass transfer increases at a certain critical value of pressure.

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