燃料电池电化学反应的投影Adams多尺度模拟  

PROJECTIVE ADAMS MULTISCALE SIMULATION OF ELECTROCHEMICAL REACTIONS IN FUEL CELL

作　　者：杨晨[1] 彭伟[1] 马定聪[1] 

机构地区：[1]重庆大学动力工程学院,低品位能源利用技术及系统教育部重点实验室,重庆400044

出　　处：《太阳能学报》2012年第11期1973-1978,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(50876117);中央高校基本科研业务(CDJXS11140001)

摘　　要：提出一种用于模拟燃料电池电化学反应过程的投影Adams多尺度方法,该方法只需在某种细微尺度上建立电化学反应过程的仿真器并计算其中少量演化步,然后运用二阶精度的Adams预测校正法对仿真器演化后得到的反应物浓度进行有效外推即能快速准确获取后续演化步的反应物浓度,从而满足燃料电池电化学反应机理特性研究的需要。通过对固体氧化物燃料电池(SOFC)中的电化学反应过程进行仿真分析,结果表明所提方法具有较高的准确性和计算效率,能够从细微底层出发较为真实地反映出燃料电池电化学反应过程的宏观特性。Projective Adams method for multiscale simulation of electrochemical reactions in fuel cell was proposed. The method only needs to calculate a small amount of evolution steps by fine scale simulators of electrochemical re- actions, and then obtained reactant concentration was reasonably extrapolated using the Adams predictor-corrector method with second order accuracy, the concentration of follow-up evolution steps was obtained quickly and precise- ly, it meet the needs of characteristics in electrochemical reaction processes. The simulation results of electrochemi- cal reaction processes in solid oxide fuel cell show that the proposed method is accurate and efficient, and they could truly reflect macro-scale characteristics of electrochemical reaction processes in fuel cell starting from a fine scale.

关 键 词：燃料电池 电化学反应 多尺度模拟 粗粒化投影积分 

分 类 号：TM911[电气工程—电力电子与电力传动] TP391[自动化与计算机技术—计算机应用技术]