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Double Diffusion in Ar-N_2 Binary Gas System at the Constant Value of Temperature Gradient

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Seleznev V., Kosov V., Poyarkov I., Fedorenko O., Beketaeva M.
Acta Physica Polonica A
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2013
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vol. 123
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issue 1
62-66
EN
An experimental study of the "diffusion-gravitational convection" transition boundary in an Ar-N_2 binary system at different pressures and a constant temperature gradient is performed. It is shown that the diffusion is replaced by the gravitational convection at a pressure p ≈ 0.5 MPa. In terms of the stability theory, a perturbation boundary line is determined, dividing the Rayleigh numbers plane into the regions of the diffusion and the convective mass transfer. The experimental data agree well with the theoretical values.
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