摘要
燃料电池空气过滤器不仅能够过滤颗粒污染物,还可以有效吸附空气污染物,对于提高燃料电池耐久性具有重要意义。根据吸附性能-初始浓度-空气流速数学模型,应用计算流体力学(CFD)软件Fluent,加载燃料电池汽车5000s动态工况,对空气过滤器SO2吸附性能及流体力学性能进行了仿真。主要内容包括:构建过滤器实例吸附模型,通过UDF建立动态工况模型,对空气过滤器流体力学和化学吸附性能进行仿真计算,最后与恒定工况下的情况进行比较分析。仿真结果表明,动态工况对空气过滤器设计具有重要意义,为燃料电池空气过滤器进一步优化设计提供了依据。
An air fiher for fuel cell in cathode was used to remove the air contaminations, which has an important guiding significance in the improvement of fuel cell durability. A three-dimension mathematic model between inlet property and adsorption property built by our search group was adopted. According to the 3 D mathematic model, CFD software Fluent was applied to calculate the hydrodynamic and chemical property of air filter when operating under un- steady inlet velocity. The porous medium model, chemical adsorptive model and unsteady inlet velocity model based on UDF were set and the hydrodynamic and chemical property of air filter element were calculated in this paper. Com- pared with steady working condition, the effects of unsteady working condition on air filter were analyzed in this pa- per.
出处
《计算机仿真》
CSCD
北大核心
2012年第7期363-367,共5页
Computer Simulation
基金
高等学校博士学科点专项科研基金(20090072120026)
