caa a22 4500 475816331 CHVBK 20180406123811.0 cr unu---uuuuu 170329e20000201xx s 000 0 eng 10.1023/A:1003964201327 doi (NATIONALLICENCE)springer-10.1023/A:1003964201327 Three-dimensional numerical simulation of straight channel PEM fuel cells [Elektronische Daten] [S. Dutta, S. Shimpalee, J.W. Van Zee] The need to model three-dimensional flow in polymer electrolyte membrane (PEM) fuel cells is discussed by developing an integrated flow and current density model to predict current density distributions in two dimensions on the membrane in a straight channel PEM fuel cell. The geometrical model includes diffusion layers on both the anode and cathode sides and the numerical model solves the same primary flow related variables in the main flow channel and the diffusion layer. A control volume approach is used and source terms for transport equations are presented to facilitate their incorporation in commercial flow solvers. Predictions reveal that the inclusion of a diffusion layer creates a lower and more uniform current density compared to cases without diffusion layers. The results also show that the membrane thickness and cell voltage have a significant effect on the axial distribution of the current density and net rate of water transport. The predictions of the water transport between cathode and anode across the width of the flow channel show the delicate balance of diffusion and electroosmosis and their effect on the current distribution along channel. Kluwer Academic Publishers, 2000 current distribution nationallicence fuel cell nationallicence mass transfer nationallicence PEM nationallicence Dutta S. Department of Mechanical Engineering, University of South Carolina, 29208, Columbia, SC, USA aut Shimpalee S. Department of Mechanical Engineering, University of South Carolina, 29208, Columbia, SC, USA aut Van Zee J.W. Department of Mechanical Engineering, University of South Carolina, 29208, Columbia, SC, USA aut Journal of Applied Electrochemistry Kluwer Academic Publishers 30/2(2000-02-01), 135-146 0021-891X 30:2<135 2000 30 10800 https://doi.org/10.1023/A:1003964201327 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003964201327 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dutta S. Department of Mechanical Engineering, University of South Carolina, 29208, Columbia, SC, USA aut NATIONALLICENCE 700 1- Shimpalee S. Department of Mechanical Engineering, University of South Carolina, 29208, Columbia, SC, USA aut NATIONALLICENCE 700 1- Van Zee J.W. Department of Mechanical Engineering, University of South Carolina, 29208, Columbia, SC, USA aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 30/2(2000-02-01), 135-146 0021-891X 30:2<135 2000 30 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer