.... Pressure and velocity vector plots show considerable turbulence mixing and flow separation in the feeder near the flow channel inlets. This gives rise to highly nonsymmetric velocity and temperature/concentration distributions. This is more predominant in the center channels. The effect decreases in flow...

... to the uneven flow distribution, flow separation occurs in the front four channels for the blunt inlet profile at all flow rates examined. These areas of flow separation lead to localized reactant deficient areas within a channel. Appleby , A. J. , and Foulkes , F. R. , Fuel Cell Handbook...