Thermodiffusion and Diffusion Correction Factors of Neutral Gases in the Earth's Atmosphere

The Maxwell–Stefan diffusion equations for multicomponent neutral gas mixtures with thermodiffusion ratios and diffusion correction factors in the Chapman–Cowling third-order approximation are derived. These thermodiffusion ratios and diffusion correction factors are presented explicitly as function...

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Bibliographic Details
Published in:Surveys in geophysics 2021-07, Vol.42 (4), p.989-997
Main Author: Pavlov, A. V.
Format: Article
Language:English
Subjects:
Approximation
Astronomy
Atmosphere
Cowlings
Diffusion
Diffusion equations
Earth and Environmental Science
Earth atmosphere
Earth Sciences
Gas mixtures
Gases
Geophysics
Geophysics/Geodesy
Neutral gases
Observations and Techniques
Ratios
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Summary:The Maxwell–Stefan diffusion equations for multicomponent neutral gas mixtures with thermodiffusion ratios and diffusion correction factors in the Chapman–Cowling third-order approximation are derived. These thermodiffusion ratios and diffusion correction factors are presented explicitly as functions of masses, number densities, thermal conductivities, and the Chapman–Cowling collision integrals of the neutral species under consideration. Applications to the multicomponent mixture of atmospheric neutral gases O, N 2 , O 2 , He, H, Ar, H 2 , N, and NO are considered, and recommendations are given for using the results of this paper in studies of the Earth's atmosphere.
ISSN:0169-3298
1573-0956
DOI:10.1007/s10712-021-09647-3