Amirkabir University of Technology AUT Journal of Mechanical Engineering 2588-2937 4 3 2020 09 01 The Efficacy of Novel Designs on the Proficiency of Polymer Exchange Membrane Fuel Cell 331 346 3760 10.22060/ajme.2020.16416.5817 EN Ali Sheikhmohamadi PhD student, Mechanical Engineering Department, Urmia University, Urmia, Iran Iraj Mirzaee دانشگاه ارومیه*دانشکده فنی و مهندسی Nader Pourmahmoud Professor, Mechanical Engineering Department, Urmia University, Urmia, Iran Nima Ahmadi Mechanical Engineering, Urmia University of Technology, Urmia, Iran 0000-0002-4560-1761 Journal Article 2019 05 24 Numerical simulation is extensively used in the many industries to investigate transport phenomena inside channels with variant dimensions to save time and cost.  In this paper, novel designs for cylindrical polymer fuel cell in the numerical and three-dimensional form are presented. In the simulation of these models, finite volume method is used. Thereafter, novel designs are used to increase the proficiency of polymer electrolyte fuel cell. In this study at first, the effect of semi-circular prominent gas diffusion layers is studied. By locating these prominences on gas diffusion layers, this fact is observed that the performance of fuel cell is enhanced in same condition. However, the optimum size of the prominences is also investigated in the present work. By reaching the magnitude of the radius to 0.55 mm, the flow velocity exceeds the desired magnitude. By this way the diffusion of species impressed negatively. Then, the effect of gradual changes in cross-section, the geometrical configuration of cell parts on species diffusion, the output current density is put under careful study. The results displayed the optimal performance is belong to the cylindrical fuel cell with elliptical cross-section. Wider transport region and lower drop quantity in identical volume for reactive gases to pass to the reactive domain are the reasons for optimal function. https://ajme.aut.ac.ir/article_3760_27e8e17134dd7083b050476733207ea1.pdf