Erschienen: 31.12.2003 Abbildung von Wild | Multicomponent Diffusion in Liquids | 2003 | 776

Wild

Multicomponent Diffusion in Liquids

lieferbar, ca. 10 Tage

2003. Buch. 124 S. 55 Illustrationen, 29 Tabellen. Hardcover

VDI. ISBN 978-3-18-377603-0

Das Werk ist Teil der Reihe: Vefahrenstechnik; 776

Produktbeschreibung

Multicomponent diffusion in liquid mixtures is the main objective of this work, including experimental and theoretical investigations. Multicomponent Fick diffusivities were measured in a holographic interferometry unit across the entire concentration ranges of three liquid systems with different non-ideal thermodynamic behavior. Fick diffusivities were then transformed into Maxwell-Stefan diffusivities using thermodynamic excess enthalpy models. Results show a great dependency on composition in both Fick and Maxwell-Stefan diffusion coefficients. The theoretical investigations deal with the mathematical connection between Fick and Maxwell-Stefan and methods for the thermodynamic data needed. Additionally prediction methods for diffusivities are tested. A consistency test for diffusivities and a novel analyzation method for obtaining Maxwell-Stefan diffusivities directly from experiments is presented.

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