A Solute Flux Near a Solid Wall as a Reason for the Observation of Anomalous Transport

The paper is devoted to the study of the reasons of anomalous transport observation in the experiments with microchannels. Usually, retardation of such transport is associated with the interaction of solute particles with channel walls. In the present paper, we have shown that the viscous interactio...

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Bibliographic Details
Published in:Microgravity science and technology 2021-02, Vol.33 (1), Article 3
Main Authors: Maryshev, Boris S., Klimenko, Lyudmila S.
Format: Article
Language:English
Subjects:
Aerospace Technology and Astronautics
Classical and Continuum Physics
Diffusion effects
Engineering
Microchannels
Original Article
Solute transport
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
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Summary:The paper is devoted to the study of the reasons of anomalous transport observation in the experiments with microchannels. Usually, retardation of such transport is associated with the interaction of solute particles with channel walls. In the present paper, we have shown that the viscous interaction of the flow and solid wall can be the reason for the anomalous transport observation. It was illustrated on a specific example of a passive solute transport through the channel. The effect of diffusion on such transport was investigated numerically. The power law decline of concentration with respect to time was obtained in a wide range of parameters.
ISSN:0938-0108
1875-0494
DOI:10.1007/s12217-020-09862-4