SOFC电化学性能的伸缩式投影Adams多尺度模拟  

Telescopic Projection Adams Multiscale Simulation of Solid Oxide Fuel Cell Electrochemical Performance

作　　者：杨晨[1,2] 周娜娜[2] 彭伟[2] 

机构地区：[1]低品位能源利用技术及系统教育部重点实验室,重庆400044 [2]重庆大学动力工程学院,重庆400044

出　　处：《工程热物理学报》2012年第7期1114-1118,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目(No.50876117);中央高校基本科研业务费(No.CDJXS11141149)

摘　　要：目前对SOFC的研究主要通过数值分析方法,由于传统宏观模型不能准确描述其内在机理,而细微尺度模拟则面临计算机内存开销巨大,CPU耗时过长的问题。因此本文提出一种用于模拟SOFC电化学性能的伸缩式投影Adams多尺度模拟方法,建立SOFC的系统模型,首次以多尺度的观点从介观尺度出发对SOFC电化学性能进行模拟。研究其各电化学性能参数之间的关系以及入口燃料/空气成分含量、SOFC工作温度、压力对电化学性能的影响,论证了该方法的有效性。Study on SOFC mainly relies on numerical simulation.However at the macroscale it has not predicted the internal mechanism accurately;great difficulties also appear in the fine-scale modelling,such as the huge computational cost on the computer memory and central processing unit （CPU）.Based on this,in this paper a telescopic projective Adams multiscale simulation method on fuel cell electrochemical reaction is presented and then applied to solid oxide fuel cell electrochemical reaction process.It performs a multi-scale process modelling of SOFC electrochemical reaction by the proposed method and the electrochemical performance of SOFC is obtained by multi-scale point of view from mesoscopic scale.The results indicate that the proposed method can solve the complex multi-scale problem with high efficiency and accuracy,it also reveals a huge potential to perform a multi-scale process modelling of complex system,which is almost an impossible mission for current simulation technique and computer＇s capacity.

关 键 词：固体氧化物燃料电池 电化学性能 多尺度模拟 粗粒化投影积分 

分 类 号：TM911.4[电气工程—电力电子与电力传动] TQ021.4[化学工程]