Szukana fraza: [Abstract = "This computational fluid dynamics code was employed as the direct problem solver, which was used to simulate the three\-dimensional mass, momentum, energy and species transport phenomena as well as the electron\- and proton\-transfer process taking place in a PEMFC. The results showed that the predicted polarization curves by using this model were in good agreement with the experimental results and a high performance was observed by using circle geometry for the channels of anode and cathode sides. Also, the results showed that the performance of the fuel cell improved when a rectangular channel was used."]

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