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The Effective Medium Theory of Diffusion in Composite Media
Author(s) -
DAVIS H. TED
Publication year - 1977
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1977.tb14091.x
Subject(s) - thermal diffusivity , diffusion , composite number , materials science , media theory , diffusion theory , thermodynamics , statistical physics , field (mathematics) , chemical physics , chemistry , composite material , physics , mathematics , sociology , media studies , pure mathematics
The effective medium theory is developed for diffusion in random composite media. It is demonstrated that the theoretical diffusivity depends crucially on whether concentration or chemical potential is taken to be the field variable for describing transport.