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Numerical investigations of diffusion coefficients in the context of multi‐component gas transport within the Theory of Porous Media
Author(s) -
Thom Andrea,
Ricken Tim,
Koßler Marvin,
Gehrke Tobias,
Denecke Martin,
Widmann Renatus,
Schulte Marcel,
Schmidt Thorsten C.
Publication year - 2018
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201800446
Subject(s) - porous medium , methane , diffusion , context (archaeology) , exothermic reaction , carbon dioxide , advection , porosity , component (thermodynamics) , materials science , thermodynamics , mechanics , chemistry , physics , geology , paleontology , composite material , organic chemistry
In order to simulate methane oxidation within landfill covers in changing environmental conditions, a computational approach via the extended Theory of Porous Media (eTPM) was created. Its purpose is to gain an overall view on the ongoing processes such as concentration progression of methane, oxygen, carbon dioxide and nitrogen. For that, advective and diffusive transport mechanisms as well as energy production from the exothermic oxidation reaction are considered. Regarding the diffusive gas transport different approaches to model the diffusion coefficient are made use of.