The effect of inhomogeneous compression on water transport in the cathode of a PEM fuel cell

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

1 Citation (Scopus)

Abstract

A three-dimensional, multi-component, two-fluid model developed in the commercial CFD package CFX 13 (ANSYS inc.), is used to investigate the effect of porous media compression on transport phenomenon of a PEM Fuel cell (PEMFC). The PEMFC model only consist of the cathode channel, gas diffusion layer, micro-porous layer and catalyst layer, excluding the membrane and anode. In the porous media liquid water transport is described by the capillary pressure gradient, momentum loss via the Darcy-Forchheimer equation and mass transfer between phases by a non-equilibrium phase change model. Furthermore, the presence of irreducible liquid water is taken into account. In order to account for compression, porous media morphology variations are specified based on the GDL through-plane strain and intrusion which are stated as a function of compression. These morphology variations affect gas and liquid water transport, and hence liquid water distribution and the risk of blocking active sites. Hence, water transport is studied under GDL compression, in order to investigate the qualitative effects. Two simulation cases are compared; one with and one without compression.
Original languageEnglish
Title of host publicationProceedings of ASME 2011 5th International Conference on Energy Sustainability & 9th Fuel Cell Science, Engineering and Technology Conference : ESFuelCell2011
Number of pages12
PublisherAmerican Society of Mechanical Engineers
Publication date2011
Pages839-850
ISBN (Print)978-0-7918-5469-3
Publication statusPublished - 2011
EventASME 2011 9th Fuel Cell Science, Engineering and Technology Conference - Washington, DC, United States
Duration: 7 Aug 201110 Aug 2011

Conference

ConferenceASME 2011 9th Fuel Cell Science, Engineering and Technology Conference
CountryUnited States
CityWashington, DC
Period07/08/201110/08/2011

Fingerprint

Fuel cells
Cathodes
Porous materials
Compaction
Liquids
Water
Diffusion in gases
Capillarity
Pressure gradient
Momentum
Anodes
Computational fluid dynamics
Mass transfer
Membranes
Catalysts
Fluids
Gases

Cite this

Olesen, A. C., Berning, T., & Kær, S. K. (2011). The effect of inhomogeneous compression on water transport in the cathode of a PEM fuel cell. In Proceedings of ASME 2011 5th International Conference on Energy Sustainability & 9th Fuel Cell Science, Engineering and Technology Conference: ESFuelCell2011 (pp. 839-850). American Society of Mechanical Engineers.
Olesen, Anders Christian ; Berning, Torsten ; Kær, Søren Knudsen. / The effect of inhomogeneous compression on water transport in the cathode of a PEM fuel cell. Proceedings of ASME 2011 5th International Conference on Energy Sustainability & 9th Fuel Cell Science, Engineering and Technology Conference: ESFuelCell2011. American Society of Mechanical Engineers, 2011. pp. 839-850
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abstract = "A three-dimensional, multi-component, two-fluid model developed in the commercial CFD package CFX 13 (ANSYS inc.), is used to investigate the effect of porous media compression on transport phenomenon of a PEM Fuel cell (PEMFC). The PEMFC model only consist of the cathode channel, gas diffusion layer, micro-porous layer and catalyst layer, excluding the membrane and anode. In the porous media liquid water transport is described by the capillary pressure gradient, momentum loss via the Darcy-Forchheimer equation and mass transfer between phases by a non-equilibrium phase change model. Furthermore, the presence of irreducible liquid water is taken into account. In order to account for compression, porous media morphology variations are specified based on the GDL through-plane strain and intrusion which are stated as a function of compression. These morphology variations affect gas and liquid water transport, and hence liquid water distribution and the risk of blocking active sites. Hence, water transport is studied under GDL compression, in order to investigate the qualitative effects. Two simulation cases are compared; one with and one without compression.",
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Olesen, AC, Berning, T & Kær, SK 2011, The effect of inhomogeneous compression on water transport in the cathode of a PEM fuel cell. in Proceedings of ASME 2011 5th International Conference on Energy Sustainability & 9th Fuel Cell Science, Engineering and Technology Conference: ESFuelCell2011. American Society of Mechanical Engineers, pp. 839-850, ASME 2011 9th Fuel Cell Science, Engineering and Technology Conference, Washington, DC, United States, 07/08/2011.

The effect of inhomogeneous compression on water transport in the cathode of a PEM fuel cell. / Olesen, Anders Christian; Berning, Torsten; Kær, Søren Knudsen.

Proceedings of ASME 2011 5th International Conference on Energy Sustainability & 9th Fuel Cell Science, Engineering and Technology Conference: ESFuelCell2011. American Society of Mechanical Engineers, 2011. p. 839-850.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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T1 - The effect of inhomogeneous compression on water transport in the cathode of a PEM fuel cell

AU - Olesen, Anders Christian

AU - Berning, Torsten

AU - Kær, Søren Knudsen

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N2 - A three-dimensional, multi-component, two-fluid model developed in the commercial CFD package CFX 13 (ANSYS inc.), is used to investigate the effect of porous media compression on transport phenomenon of a PEM Fuel cell (PEMFC). The PEMFC model only consist of the cathode channel, gas diffusion layer, micro-porous layer and catalyst layer, excluding the membrane and anode. In the porous media liquid water transport is described by the capillary pressure gradient, momentum loss via the Darcy-Forchheimer equation and mass transfer between phases by a non-equilibrium phase change model. Furthermore, the presence of irreducible liquid water is taken into account. In order to account for compression, porous media morphology variations are specified based on the GDL through-plane strain and intrusion which are stated as a function of compression. These morphology variations affect gas and liquid water transport, and hence liquid water distribution and the risk of blocking active sites. Hence, water transport is studied under GDL compression, in order to investigate the qualitative effects. Two simulation cases are compared; one with and one without compression.

AB - A three-dimensional, multi-component, two-fluid model developed in the commercial CFD package CFX 13 (ANSYS inc.), is used to investigate the effect of porous media compression on transport phenomenon of a PEM Fuel cell (PEMFC). The PEMFC model only consist of the cathode channel, gas diffusion layer, micro-porous layer and catalyst layer, excluding the membrane and anode. In the porous media liquid water transport is described by the capillary pressure gradient, momentum loss via the Darcy-Forchheimer equation and mass transfer between phases by a non-equilibrium phase change model. Furthermore, the presence of irreducible liquid water is taken into account. In order to account for compression, porous media morphology variations are specified based on the GDL through-plane strain and intrusion which are stated as a function of compression. These morphology variations affect gas and liquid water transport, and hence liquid water distribution and the risk of blocking active sites. Hence, water transport is studied under GDL compression, in order to investigate the qualitative effects. Two simulation cases are compared; one with and one without compression.

M3 - Article in proceeding

SN - 978-0-7918-5469-3

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EP - 850

BT - Proceedings of ASME 2011 5th International Conference on Energy Sustainability & 9th Fuel Cell Science, Engineering and Technology Conference

PB - American Society of Mechanical Engineers

T2 - ASME 2011 9th Fuel Cell Science, Engineering and Technology Conference

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Olesen AC, Berning T, Kær SK. The effect of inhomogeneous compression on water transport in the cathode of a PEM fuel cell. In Proceedings of ASME 2011 5th International Conference on Energy Sustainability & 9th Fuel Cell Science, Engineering and Technology Conference: ESFuelCell2011. American Society of Mechanical Engineers. 2011. p. 839-850