A computationally efficient hybrid 3D analytic-numerical approach for modelling species transport in a proton exchange membrane fuel cell

► Computationally fast hybrid 3D species transport model in fuel cells is presented. ► Model is 1D numerical in direction of flow and 2D analytic in other two dimensions. ► Model validation showed high accuracy of 3D species concentration distribution. ► Due to its analytic part its computational times are comparable to 1D models. ► High accuracy and computational efficiency make it a promising system level tool.