Beschreibung:
A traveling-wave flow field is proposed and investigated for the performance improvement effect of proton exchange membrane fuel cell (PEMFC). This study analyzes the influence of multiple structural parameters of traveling-wave length, wave height, wave number, and wave spacing on the flow law, mass transfer characteristics of the flow field, and PEMFC performance, and obtains the weight coefficient of each structural parameter through the Grey-relational theory. Results show that the traveling-wave flow field has excellent oxygen transport and drainage functions, and its corresponding functional structures are wave crest and wave trough respectively. Compared with the conventional flow field, the effective mass transfer coefficient is increased by 1.18 times, the oxygen consumption is increased by 38.23%, the drainage is increased by 2.24%, and the output performance is increased by 11.17% of the PEMFC with traveling-wave flow field. In addition, the weighting relationship of the traveling-wave structural parameters on the mass transfer performance and net power density is wave height > wave number > wave length > wave spacing