In this work, a novel three-phase and three dimensional CFD model based on the Euler-Euler approach developed for modeling the hydrodynamic, mass transfer and CO fixation using microalgae in an internal loop airlift reactor with internal sparger. The main objective of this work was to development of CFD codes in order to simulate the CO biofixation process under different input gas velocity during 11 days of culture time and simulate the unsteady state mass transfer based on Surface-Renewal-Stretch (SRS) model. The CFD results were compared with the our previous experimental work and they showed good agreement with a margin of less than 10%. This paper illustrated the ability of the CFD in complex process simulation such as CO biofixation in the airlift reactor and provided a useful basis for further study.

中文翻译：

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在气升式反应器中使用生物催化剂从空气中捕获二氧化碳的计算流体动力学模型


在这项工作中，开发了一种基于 Euler-Euler 方法的新型三相三维 CFD 模型，用于在带有内部分布器的内循环气升式反应器中使用微藻对流体动力学、传质和 CO 固定进行建模。这项工作的主要目标是开发 CFD 代码，以模拟 11 天培养时间内不同输入气体速度下的 CO 生物固定过程，并模拟基于表面更新拉伸 (SRS) 模型的非稳态传质。 CFD 结果与我们之前的实验工作进行了比较，结果显示出良好的一致性，误差小于 10%。本文阐述了CFD在气升反应器中CO生物固定等复杂过程模拟中的能力，为进一步研究提供了有益的基础。