Abstract A 3D model is developed based on the computational fluid dynamic (CFD) method to investigate the behavior of perovskite hollow fiber membrane modules for oxygen separation. The User Defined Functions (UDFs) and FLUENT software are used to calculate simulation results and validated by the experimental data from a La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) membrane module, which was assembled with 7 hollow fiber membranes. The effect of operating conditions such as preheating air feed, pressurizing air feed, and/or vacuuming has been investigated based on the oxygen permeation rate, temperature, oxygen concentration and gas velocity distribution in the membrane module. The simulation results indicate that increasing the vacuum level on the permeate side is far more effective to improve the oxygen separation rate than increasing the pressure on the air feed side. Preheating the air feed with the air effluent or the oxygen product also noticeably enhances the oxygen separation performance of the module.

中文翻译：

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用于氧分离的钙钛矿中空纤维膜组件的 CFD 建模

摘要 基于计算流体动力学 (CFD) 方法开发了 3D 模型，以研究钙钛矿中空纤维膜组件用于氧气分离的行为。用户定义函数 (UDF) 和 FLUENT 软件用于计算模拟结果，并通过 La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) 膜组件的实验数据进行验证，该组件由 7 个中空纤维膜组装而成。已经根据膜组件中的氧气渗透率、温度、氧气浓度和气体速度分布研究了诸如预热空气进料、加压空气进料和/或抽真空的操作条件的影响。模拟结果表明，增加渗透侧的真空度比增加空气进料侧的压力更有效地提高氧气分离率。用空气流出物或氧气产品预热空气进料也显着提高了模块的氧气分离性能。