✦ LIBER ✦

Film models for multicomponent mass transfer: Diffusion in physiological gas mixtures

✍ Scribed by R. Taylor; R. Krishnamurthy

Publisher: Springer
Year: 1982
Tongue: English
Weight: 750 KB
Volume: 44
Category: Article
ISSN: 1522-9602
DOI: 10.1016/s0092-8240(82)80017-7

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✦ Synopsis

The exact solution of the Maxwell-Stefan equations for steady state diffusion in a stagnant film due to Krishna and Standart (1976) is compared to the approximate solutions of Toor (1964) and Stewart and Prober (1964) for osmotic diffusion of oxygen in the three physiological gas mixtures He-N2-O2, He-SF6-02, N2-SF6-O2. It is found that the predicted fluxes of He, N2 and SF6 are usually in excellent agreement but that the two methods could predict differing directions of transfer of oxygen. Concentration profiles obtained from the linearized equations may be significantly different from the profiles calculated from an exact solution of the film model.

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