Journal Article

FZJ-2017-07012

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Comparison of the Simplification of the Pressure Profiles Solving the Binary Friction Model for Asymmetric Membranes

Unije, U. V. (Corresponding author)FZJ* ; Mücke, R.FZJ* ; Baumann, S.FZJ* ; Guillon, O.FZJ*

2017
MDPI Basel

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Please use a persistent id in citations: http://hdl.handle.net/2128/15618  doi:10.3390/membranes7040058

Abstract: The gas flow through porous media including that of multiple species is frequently described by the binary friction model (BFM) considering the binary diffusion, Knudsen diffusion, and viscous flow. Therefore, a numerical simulation was performed on a microporous support of an asymmetric oxygen transport membrane. As its exact numerical solution is complicated and not always possible, the results of two different levels of simplification of the pressure profiles within the porous support are compared to the exact numerical solution. The simplification using a constant pressure equal to the gas pressure outside the support leads to a deviation by up to 0.45 mL·min−1·cm−2 from the exact solution under certain operating condition. A different simplification using a constant pressure averaged between the outside of the support and the support/membrane interface reduces this deviation to zero. Therefore, this is a useful measure to reduce computational efforts when implementing the Binary Friction Model in computational fluid dynamics simulations.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
2. JARA-ENERGY (JARA-ENERGY)

Research Program(s):

1. 113 - Methods and Concepts for Material Development (POF3-113) (POF3-113)
2. HITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406) (HITEC-20170406)

Appears in the scientific report 2017

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Database coverage:
; ; ; ; DOAJ Seal ; Ebsco Academic Search ; Emerging Sources Citation Index ; NCBI Molecular Biology Database ; SCOPUS ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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