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Instationäre Diffusion [A10]

(Methode der Variablentrennung)

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Stoffübertragung

Part of the book series: Wärme- und Stoffübertragung ((WÄRME))

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Zusammenfassung

Diffusionsvorgänge sind häufig zeitabhängig, also instationär. Für diese Diffusions- art wurde in Kap. 3 die partielle Differentialgleichung (3.30) der eindimensionalen instationären Diffusion der Komponente A in y-Richtung ohne chemische Reaktion hergeleitet:

$$ \frac{{\partial {{c}_{A}}}}{{\partial t}} = {{D}_{{AB}}}\frac{{{{\partial }^{2}}{{c}_{A}}}}{{\partial {{y}^{2}}}}. $$

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Literatur

  1. Astarita, G.: Mass transfer with chemical Reaction. Amsterdam: Elsevier 1967 236

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  2. Danckwerts, P. V.: Absorption by simultaneous diffusion and chemical reaction into particles of various shapes and into falling drops. Trans. Faraday Soc. 47 (1951) 1014

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Authors and Affiliations

  1. TU München, Arcisstr. 21, 8000, München 2, Deutschland

    Prof. Dr.-Ing. Alfons Mersmann (Lehrstuhl B für Verfahrenstechnik)

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  1. Prof. Dr.-Ing. Alfons Mersmann
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© 1986 Springer-Verlag Berlin Heidelberg

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Mersmann, A. (1986). Instationäre Diffusion [A10]. In: Stoffübertragung. Wärme- und Stoffübertragung. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82617-7_5

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  • DOI: https://doi.org/10.1007/978-3-642-82617-7_5

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-15920-9

  • Online ISBN: 978-3-642-82617-7

  • eBook Packages: Springer Book Archive

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