This work presents the enhanced numerical simulation of the radiation transport in three different types of photocatalytic reactor using a novel Discrete Ordinate Method model recently developed for the open-source computational fluid dynamics (CFD) platform OpenFOAM. The photoreactors represent commonly used geometries and illumination sources in the field of heterogeneous photocatalysis: an annular reactor illuminated by a mercury fluorescent lamp, a tubular reactor coupled to a compound parabolic collector illuminated by sunlight, and a tubular reactor illuminated by LEDs. Simulations were carried out for different photocatalyst concentrations, considering absorption and anisotropic scattering, showing differences smaller than 2.4% with respect to the results obtained by commercial CFD software for systems with isotropic emission, such as fluorescent lamps. Moreover, the model was able to improve the simulation of solar reactors and dramatically outperformed the simulation of LED sources, due to the combined effect of quadrature rotation and cone-limit fitting for cone-shaped sources, as well as a LED-specific power-cosine light distribution. The developed model has been thoroughly validated and is now available to the open-source CFD community. It allows a comprehensive numerical simulation of radiation transport using any type of light source, with applications in numerous engineering fields where optical phenomena affect the performance of the process.

这项工作使用最近为开源计算流体动力学（CFD）平台OpenFOAM开发的新型离散标准方法模型，提出了三种不同类型的光催化反应器中辐射传输的增强数值模拟。光反应器代表了非均相光催化领域中常用的几何形状和照明源：由水银荧光灯照射的环形反应器，与日光照射的复合抛物线形收集器连接的管状反应器和由LED照射的管状反应器。考虑到吸收和各向异性散射，针对不同的光催化剂浓度进行了模拟，相对于各向同性发射系统的商用CFD软件所获得的结果，显示出的差异小于2.4％，例如日光灯。此外，由于正交旋转和圆锥形光源的圆锥极限拟合以及LED专用功率的组合效应，该模型能够改进太阳能反应堆的仿真，并大大优于LED光源的仿真。余弦光分布。开发的模型已经过全面验证，现在可用于开源CFD社区。它允许使用任何类型的光源对辐射传输进行全面的数值模拟，并应用于光学现象影响工艺性能的众多工程领域。归因于正交旋转和圆锥形光源的圆锥极限配合的组合效果，以及LED专用的功率余弦光分布。开发的模型已经过全面验证，现在可供开放源代码CFD社区使用。它允许使用任何类型的光源对辐射传输进行全面的数值模拟，并应用于光学现象影响工艺性能的众多工程领域。归因于正交旋转和圆锥形光源的圆锥极限配合的组合效果，以及LED专用的功率余弦光分布。开发的模型已经过全面验证，现在可用于开源CFD社区。它允许使用任何类型的光源对辐射传输进行全面的数值模拟，并应用于光学现象影响过程性能的众多工程领域。