中文摘要：

本文借助可视化手段，针对平行流场和蛇形流场，实验研究不同放电电流密度、甲醇浓度、进料温度和入口流量对液相进料直接甲醇燃料电池阳极流场流动阻力特性的影响。结果表明：放电电流密度增加，流场压降随之增加，小电流放电，蛇型流场较平行流场压降增加慢，当超过某一值时，蛇型流场的压降增加较平行流场快；随甲醇浓度的提高，进出口压降均略有减小，且两种流场压降变化趋势一致；随进料温度升高，平行流场压降逐渐增大，蛇形流场压降变化较小；随着甲醇溶液流量增大，平行流场和蛇行流场压降均逐渐增大，平行流场增加缓慢，蛇形流场压降增加速度远大于平行流场。

英文摘要：

Visual experiments were conducted istics by varying operating parameters （current for studying the two-phase flow resistance characterdensity, methanol concentration, inlet flow rates and temperature） for the parallel anode flow field and the single serpentine anode flow field of an in-house fabricated direct methanol fuel cell （DMFC）. The results show that the pressure drop of anode flow field increased with increasing current density. At small current densities, the pressure drop of the single serpentine flow field increased slower than the parallel flow field. When the current density exceeded a certain value, the pressure drop of the single serpentine flow field increased faster than the parallel flow field. At the same discharge current density, the total pressure drop between inlet and outlet has a rather smaller decrease with the increasing of methanol concentration, and it has the same change trend with the pressure drop of the two kinds of flow field. With the temperature of inlet methanol solution improving, the pressure drop of parallel flow field enhanced, but there is little change in the serpentine flow field. Under the same inlet methanol solution flow rate, the pressure drop of parallel flow field is lower than the serpentine flow field, and with the elevating of flow rate, the pressure drop increasing speed in serpentine flow field is much higher than in the parallel flow field.