On the manifestation of multi-component diffusion in a laminar boundary layer with foreign blowing
V.V. Lukashov1, S.V. Zhilivostova2
1 Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
2 Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: multi-component diffusion, boundary layer, foreign blowing
Pages: 477-482
Abstract
Specific features of laminar diffusion boundary layer on permeable surface with isothermal helium blowing into airflow are experimentally examined. Measured profiles of helium, nitrogen, and oxygen concentrations show that the proportion between the volume molar fractions of N2 and О2 varies across the boundary layer. At high intensities of helium blowing into air a difference from binary diffusion obeying the Fick law is observed. Our estimates show that, in boundary layer with foreign blowing, manifestation of effects due to multi-component diffusion is possible.
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