On the validity of Fick's law for transi
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F.K. Lehner
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Article
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1979
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Elsevier Science
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English
β 474 KB
The method of spatial averaging is apphed to derive a macroscopic form of Fick's law for unsteady diffusion through a rigid porous medium The validity of this form is found to be restricted by the requirements that diffusion is quasi-steady on a pore scale and that interphase mass transfer rates dep