Investigation of the flow field inside the manifold of a real operated fuel cell stack using optical measurements and Computational Fluid Mechanics

The versatility of fuel cells enables a wide range of applications. Usually fuel cells are combined to stacks such that the reactant supply of the single cells is achieved via a pipe branching system, the manifold. The overall performance significantly depends on cell flow rates which are related to...

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Bibliographic Details
Published in:Journal of power sources 2016-02, Vol.304, p.155-163
Main Authors: Schmieder, Felix, Kinaci, Mustafa E., Wartmann, Jens, König, Jörg, Büttner, Lars, Czarske, Jürgen, Burgmann, Sebastian, Heinzel, Angelika
Format: Article
Language:English
Subjects:
CFD
Fuel cell stack
Manifold
Optical flow measurement
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Summary:The versatility of fuel cells enables a wide range of applications. Usually fuel cells are combined to stacks such that the reactant supply of the single cells is achieved via a pipe branching system, the manifold. The overall performance significantly depends on cell flow rates which are related to the fluidic interaction of the manifold and the cells. Computational Fluid Dynamics (CFD) simulations, which are often used to find a suitable design, lack experimental flow data for validation of the numerical results. To enable flow measurements within the small geometries of the manifold and to provide reliable velocity information inside a real fuel cell stack, a low-coherence Laser Doppler Anemometer (LDA) is applied, which uses multi-mode laser light to achieve a spatial resolution of
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2015.11.010