Laser-optical methods for transport studies in low temperature fuel cells

摘要: Abstract: The flow distribution and structure in a polymer electrolyte membrane fuel cell (PEMFC) or direct methanol (DMFC) strongly affects the performance of cell. main functions micro-channel field are homogeneous reactants, an enhancement effective mixing expulsion reaction products such as liquid water. To properly design manifold stack, detailed experimental velocity measurements essential. Non-intrusive Laser-optical measurement techniques particle-image velocimetry, micro-particle image laser Doppler molecular-tagging velocimetry qualify for investigations more used research. basic principles these explained relevant applications research depicted critically reviewed. A forecast to future use is risked additional sources information concerning fluid mechanical problems presented.