直接甲醇燃料电池中的涉水传递现象及数值模拟

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，不仅具有很强的理论意义，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（computer fluid dynamics）技术的应用，综述了电池内部绝大多数的传递过程，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模型和数学模型，并以二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方法和模型验证方法。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和缩短开发周期和大幅度降低开发成本。

Transport Phenomena and Numerical Simulation Related to

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.