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《Chemical Industry and Engineering Progress》 2008-02
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Simulation of effects of hydrophilic properties of channel walls on characteristics of gas-liquid two-phase flow in anode channel of DMFC

KE Xin,YAO Kejian,WANG Lianghua (State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology,College of Chemical Engineering and Materials Science,Zhejiang University of Technology,Hangzhou 310032,Zhejiang,China)  
The two-phase flow in an anode channel was simulated by commercial software Fluent to study the effects of hydrophilic/hydrophobic properties on liquid distribution and gas behavior.The results showed that carbon-dioxide gas moved quickly on the hydrophobic surface.But hydrophobic channel side-wall had little benefits on the reactants transportiing to the gas diffusion layer(GDL).The reactants transportiing to GDL could be improved in an anode channel with hydrophilic channel side-wall and hydrophilic GDL surface,but it took more time for the gas to move out of the anode channel.An anode channel with hydrophilic channel side-wall and hydrophobic GDL surface avoided gas accumulation on the GDL surface,and facilitated the gas discharging and liquid transporting to GDL.
【Fund】: 浙江省自然科学基金项目(Y406163)
【CateGory Index】: TQ018
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