This webinar explains how Flownex can be used to model, analyze, and optimize proton exchange membrane (PEM) fuel cell systems, which are a promising clean-energy technology that generates electricity from hydrogen and oxygen while producing only water as a byproduct. The presenter highlights the key challenges of PEM fuel cells, including water management and thermal management, both of which are critical to maintaining efficient and reliable operation. Flownex’s capabilities for modelling complex fluids, chemical reactions, heat transfer, pressure losses, controls, and transient system behavior are demonstrated through a detailed fuel cell system model. A practical example shows how engineers can design and control a fuel cell thermal management system, simulate fuel cell performance, and evaluate system responses to changing power demands. The webinar concludes that Flownex provides a powerful platform for designing and optimizing hydrogen fuel cell systems, helping engineers accelerate the development of cleaner and more efficient energy technologies.