Unsteady 3D-CFD Simulation of a Large Active Area PEM Fuel Cell under Automotive Operation Conditions—Efficient Parameterization and Simulation Using Numerically Reduced Models

Polymer electrolyte membrane fuel cells (PEMFC) are promising devices for securing future sustainable mobility. Their field of application ranges from locally emission-free stationary power generation to propulsion systems vehicles all kinds. Computational fluid dynamic (CFD) simulations successfully used access the internal states and processes with high temporal spatial resolution. It is challenging obtain reliable physical values material properties parameterization numerous governing equations. The current work addresses this problem uses numerically reduced models parameterize sophisticated transient 3D-CFD a commercial PEMFC. Experimental data stack test stand were available as reference numerical optimization selected parameters validation purposes. With an innovative meshing approach, homogenized channels reduction computational by 87% could be achieved, thus enabling unsteady simulation 120 s load step mesh that represents entire cell geometry reasonable effort. water formation transport during analyzed. self-humidification strategy gases was visualized uniformity simulated quantities discussed. An outlook on possible efficient given.