The structure of photoreactors plays a key role in the photocatalysis by affecting the catalyst loading, mass and light transport properties. Nowadays it has become increasingly important to investigate the hydrodynamic and photocatalytic performances of photoreactors by computational fluid dynamic (CFD) method, thanks to its less cost and more steerable conditions. However, only a limited number of reports about CFD modeling of the packing bed photoreactors were presented because the unstructured substrates are difficult to reconstruct. In this paper, the bed generation technology and relevant hydrodynamic model, reaction kinetic model, and irradiation transport model of packing bed photoreactors are systematically reviewed and analyzed. The deficiency and the required modification of different CFD coupling strategies with the simulations of packing bed photoreactors are presented. The effects of temperature and local light intensity on the kinetic models and modified kinetic equations are summarized. This work may bridge the knowledge gap between the unstructured geometry generation technologies and the CFD simulations of packing bed photoreactors to promote the development/commercialization of the photocatalysis radically.

光反应器的结构通过影响催化剂的负载量，质量和光传输性能，在光催化中起关键作用。如今，由于其成本低廉和可操纵性强，通过计算流体力学（CFD）方法研究光反应器的水动力学和光催化性能变得越来越重要。然而，由于非结构化基质难以重构，因此仅给出了有限的关于填充床光反应器CFD建模的报告。本文对填充床光反应器的床层生成技术及相关的流体力学模型，反应动力学模型和辐照传输模型进行了系统的综述和分析。通过填充床光反应器的仿真，提出了不同CFD耦合策略的不足和需要的修改。总结了温度和局部光强度对动力学模型和改进的动力学方程的影响。这项工作可以弥补非结构化几何生成技术与填充床光反应器的CFD模拟之间的知识鸿沟，从根本上促进光催化的发展/商业化。