News Column

New Data from RWTH Aachen University Illuminate Findings in Porous Materials (Stochastic Aspects of Mass Transport in Gas Diffusion Layers)

August 12, 2014

By a News Reporter-Staff News Editor at Journal of Technology -- Research findings on Porous Materials are discussed in a new report. According to news reporting originating in Aachen, Germany, by VerticalNews journalists, research stated, "The relationship between the 3D morphology of gas-diffusion layers (GDL) of HT-PEFCs and their functionality is analyzed. A stochastic model describing the microstructure of paper-type GDL is combined with the Lattice-Boltzmann method (LBM) to simulate gas transport within the GDL microstructure."

The news reporters obtained a quote from the research from RWTH Aachen University, "Virtual 3D microstructures representing paper-type GDL are generated by a stochastic model, where the binder morphology is systematically modified. On these structures, single phase single component gas flow is computed by the LBM. Quality criteria evaluating the spatial homogeneity of gas supply are introduced and related to the binder morphology. The spatial homogeneity of the gas supply is analyzed by a parametrized stochastic model describing the gas flow at the exit of the GDL. This approach gives insight into the spatial structure of the gas flow at the GDL exit. The quality of gas supply is quantified by characterizing size and arrangement of regions with high gas supply. This stochastic gas flow model predicts the quality of gas supply for further binder morphologies."

According to the news reporters, the research concluded: "Analyzing the quality criteria and the stochastic evaluation of the spatial structure of the gas flow field at the GDL exit, it is found that the binder morphology has an essential influence on the gas supply."

For more information on this research see: Stochastic Aspects of Mass Transport in Gas Diffusion Layers. Transport in Porous Media, 2014;103(3):469-495. Transport in Porous Media can be contacted at: Springer, 233 Spring St, New York, NY 10013, USA. (Springer -; Transport in Porous Media -

Our news correspondents report that additional information may be obtained by contacting D. Froning, Rhein Westfal TH Aachen, D-52056 Aachen, Germany. Additional authors for this research include G. Gaiselmann, U. Reimer, J. Brinkmann, V. Schmidt and W. Lehnert.

Keywords for this news article include: Aachen, Europe, Germany, Porous Materials

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Source: Journal of Technology

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