摘要燃料电池是一种直接把化学能转化为电能的装置。它具有无污染、效率高且产品轻便等优点，可以广泛应用于各种各样的领域。

本课题旨在探讨管式固体氧化物燃料电池堆空气流道结构设计和参数对电堆内部流体分配质量的影响。用Gambit建立空气流道结构再用Fluent进行计算输出结果。通过分析初始模型空气气道结构的质量流量和速度标准偏差，提出优化方案，再通过流体力学计算验证结果，得出最佳的优化方案。87205

第一章主要介绍燃料电池的发展背景及意义。

第二章主要介绍了管式固体氧化物燃料电池的研究现状。重点介绍了固体氧化物燃料电池数值模型的一些基本理论，引出本课题的主要思路和目标。

第三章是本论文的重点。首先提出了传统管式固体氧化物燃料电池堆的设计方案，建立初始模型的空气气道结构对其进行流体力学计算。分析初始模型的计算结果，提出优化方案。优化方案依次为一进一出Z型管式固体氧化物燃料电池堆，二进二出U型管式固体氧化物燃料电池堆以及二进二出Z型管式固体氧化物燃料电池堆。分别对此三种模型的空气气道结构作跟初始模型同样的分析计算，对比四种模型的质量流量和速度分布标准偏差，得出最佳的优化方案。

毕业论文关键词：管式氧化物燃料电池堆，空气流道结构设计，计算流体动力学，空气分配特征及规律，标准偏差

Abstract The fuel cell is a kind of device that can directly convert chemical energy into electric energy。 With the advantages of no pollution, high efficiency and light weight, it can be widely used in various fields。

This topic is to investigate the tubular solid oxide fuel cell stack air flow channel structure design and parameters on the quality of the pile internal fluid distribution。 Air flow channel structure set up by using the Gambit to use Fluent software to calculate the output。 By analyzing the initial model of air mass flow rate and speed standard deviation in the airway structure and optimization scheme is put forward, and the result is proved by fluid mechanics, it is concluded that the best optimization scheme。 

The first chapter mainly introduces the development background and significance of fuel cells。 

 The second chapter introduces the research status of tubular solid oxide fuel cells。 It focuses on the basic theories of solid oxide fuel cells numerical models and brings the main thoughts and targets of the research。 

 The third chapter is the focus of this paper。 First proposed the traditional design of tubular solid oxide fuel cell stack, establish the initial model of the air on the airway structure calculation fluid mechanics。 Analysis of the calculation results of the initial model, optimization scheme is put forward。 Optimization of a into a Z type tubular solid oxide fuel cell stack, two into two out of the U type tubular solid oxide fuel cell stack and the two into two Z type tubular solid oxide fuel cell stack。 Respectively to three kinds of models of air airway structure with the same analysis and calculation of initial model, compare four kinds of models of mass flow rate and velocity distribution standard deviation, it is concluded that the best optimization scheme。 

Keywords: Tubular solid oxide fuel cell stack, the air flow channel structure design, calculated fluid dynamics, air flow distribution characteristic, the standard deviation

目 录

第一章  绪 论 1

1。1 研究燃料电池的目的 1

1。1。1 能源现状与燃料电池基础理论 1

1。1。2 评价燃料电池