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A Compressible Fluid Flow Model Coupling Channel and Porous Media Flows and Its Application to Fuel Cell Materials
Download2020-01-01
Jarauta, A., Zingan, V., Minev, P., Secanell, M.
A multi-dimensional, compressible fluid flow solver, valid in both channel and porous media, is derived by volume-averaging the Navier-Stokes equations. By selecting an appropriate average density/velocity pair, a continuous, stable solution is obtained for both pressure and velocity. The...
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2020-01-01
Mahrous, E., Jarauta, A., Chan, T., Ryzhakov, P., Weber, A.Z., Roy, R.V., Secanell, M.
A particle finite element method (PFEM) based model is proposed to analyze droplet dynamics problems, particularly droplet spreading on solid substrates (wetting). The model uses an updated Lagrangian framework to formulate the governing equations of the liquid. Curvature of the liquid surface is...
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2018-01-01
Jarauta, A., Ryzhakov, P., Pons-Prats, J., Secanell, M.
A Lagrangian incompressible fluid flow model is extended by including an implicit surface tension term in order to analyze droplet dynamics. The Lagrangian framework is adopted to model the fluid and track its boundary, and the implicit surface tension term is used to introduce the appropriate...
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Challenges in computational modeling of two-phase transport in polymer electrolyte fuel cells flow channels: a review
Download2017-01-01
Excess of liquid water in gas channels of polymer electrolyte fuel cells is responsible for malfunctioning of these devices. Not only it decreases their efficiency via partial blockage of reactants and pressure drop, but it can also lead to the irreversible damage due to oxygen starvation in case...