摘要
直接甲醇燃料电池(DMFC)的开发设计日渐成为燃料电池领域的研究热点。利用数学模型对内部传递现象进行数值模拟,不仅具有重要的理论意义,而且对结构设计和操作条件优化有很强的指导意义。本文基于两相流模型和CFD技术的应用,综述了电池内部主要的传递过程,特别是近些年开发的电池内部与水相关的传递过程的物理和数学模型,并以两者的相互联系加以组织。这些模型思想综合考虑了微观传递机理,描述了电池内复杂的传递现象并提供了相应的数值模拟和模型验证方法。这些方法能够加深人们对电池内部传质现象的理解,而其实用意义在于能够指导设计和优化电池结构、提高电池的体积和重量比能量密度、缩短开发周期和大幅度降低开发成本。
The R＆D of Direct Methanol Fuel Cell （DMFC） is becoming a hot topic in the scope of fuel cell. Simulating the interior transport phenomena by means of mathematical model is theoretically meaningful and instructive to the structure design and to optimize the operation conditions. Based on the application of two-phased flow model and computer fluid dynamics technology, the transport processing mostly occurred in the fuel cell, especially physical model and mathematical model related to water, is reviewed in this paper. The transport micro-mechanism is taken into account comprehensively in these models. These models describe the complex transport phenomena and provide numerical simulation method and validation method. These methods not only deepen the understanding of the transport phenomena occurred in the fuel cell, but also increase the power density ratio to its volume and weight, shorten the R＆D cycle and lower the R＆D cost significantly. Key words direct methanol fuel cell （DMFC） ; numerical models; transport phenomena; water management
出处
《化学进展》
SCIE
CAS
CSCD
北大核心
2006年第12期1725-1734,共10页
Progress in Chemistry
基金
国家自然科学基金项目(No.50573041)
国际科技合作重点项目计划(No.2004DFB02500)资助
关键词
直接甲醇燃料电池
数值模型
传递现象
水管理
direct methanol fuel cell (DMFC)
numerical models
transport phenomena
water management
