Turbulence-inducing grids can enhance heat transfer in air-cooled proton exchange membrane fuel cells and help to increase the fuel cell performance. In this computational fluid dynamics analysis, the distance between the turbulence grid and the cathode inlet was first varied, and then a transient sinusoidal inlet velocity around the previously investigated steady-state inlet velocity was applied because the heat transfer coefficient is known to increase in pulsating flow. Results indicate that the best distance between the grid and the cathode inlet is the closest at 2.5 mm which is in good agreement with prior experiments. The transient effects are small but show an additional cooling effect.
|Number of pages||9|
|Publication status||Published - 2020|
|Event||Pacific Rim Meeting on Electrochemical and Solid State Science 2020, PRiME 200 - Honolulu, United States|
Duration: 4 Oct 2020 → 9 Oct 2020
|Conference||Pacific Rim Meeting on Electrochemical and Solid State Science 2020, PRiME 200|
|Period||04/10/2020 → 09/10/2020|