The multiphysics analysis of the metallic bipolar plate by the electrochemical micro-machining fabrication process

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题名:	The multiphysics analysis of the metallic bipolar plate by the electrochemical micro-machining fabrication process
作者:	Chang, DY (Chang, Dar-Yuan) Lee, YM (Lee, Yu-Ming) Lee, SJ (Lee, Shuo-Jen) Lee, CY (Lee, Chi-Yuan)
贡献者:	機械工程系
关键词:	Bipolar plate Electrochemical micro-machining (EMM) Flow channel Fabrication accuracy Multiphysics model
日期:	2009
上传时间:	2011-11-30 13:14:42 (UTC+8)
摘要:	In this study, the flow channels of a PEM fuel cell are fabricated by the EMM process. The parametric effects of the process are Studied by both numerical simulation and experimental tests. For the numerical simulation, the multiphysics model, consisting of electrical field, convection, and diffusion phenomena is applied using COMSOL software. COMSOL software is used to predict the parametric effects of the channel fabrication accuracy such as pulse rate, pulse duty cycle, inter-electrode gap and electrolytic inflow velocity. The proper experimental parameters and the relationship between the parameters and the distribution of metal removal are established from the simulated results. The experimental fabrication tests showed that a shorter Pulse rate and a higher Pulse current improved the fabrication accuracy, and is consistent with the numerical simulation results. The proposed simulation model could be employed as a predictive tool to provide optimal parameters for better machining accuracy and process stability of the EMM process. (C) 2009 Elsevier B.V. All rights reserved.
显示于类别:	[機械工程系暨機械工程學系數位機電研究所] 期刊論文

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