Periodic Open Cellular Structures are envisioned as potential enhanced catalyst substrates for heat and mass transfer-limited processes. To enable their rational design, in this study, we propose a combined numerical and experimental approach to assess the pressure drop in the tetrakaidekahedral and diamond lattices since generalized correlations are not present in the literature. Deviations are observed between the model predictions available in the literature, which are possibly due to the different methods of investigation, that is, numerical on ideal geometries and experimental on reproductions. To reconcile the two approaches and prevent discrepancies, careful attention is paid here to the quality of 3D-printed replicas for experimental investigation to obtain results representative of ideal lattices. Computational Fluid Dynamics simulations and experiments are then employed together to cross-validate the results and then to perform a parametric analysis of the effect of the morphological properties on the pressure drop. The effect of the cell size and the porosity are discussed, enabling the derivation of engineering correlations for the prediction of the pressure drop across the lattices within the range of 1 < Re_ds < 300. Finally, the performances of lattice materials are compared with those of conventional structured supports by evaluating the trade-off between the fluid–solid mass transfer rate and the pressure drop, which is crucial for several catalytic processes. Results show that the diamond lattice outperforms other cellular materials and can outperform ceramic honeycomb monoliths at low Reynolds numbers.

中文翻译：

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用于强化催化过程的周期性开孔结构中压降的数值和实验研究

周期性开孔结构被设想为用于传热和传质受限过程的潜在增强催化剂底物。为了实现它们的合理设计，在本研究中，我们提出了一种结合数值和实验的方法来评估四面体和金刚石晶格中的压降，因为文献中不存在广义相关性。在文献中可用的模型预测之间观察到偏差，这可能是由于不同的调查方法，即理想几何的数值和复制的实验。为了协调这两种方法并防止出现差异，这里要特别注意 3D 打印复制品的质量，以进行实验研究，以获得代表理想晶格的结果。然后一起使用计算流体动力学模拟和实验来交叉验证结果，然后对形态特性对压降的影响进行参数分析。讨论了单元尺寸和孔隙率的影响，从而能够推导工程相关性，以预测 1 < Re 范围内跨晶格的压降_ds < 300。最后，通过评估流体 - 固体传质速率和压降之间的权衡，将晶格材料的性能与传统结构载体的性能进行比较，这对于几种催化过程至关重要。结果表明，金刚石晶格优于其他蜂窝材料，并且在低雷诺数下的性能优于陶瓷蜂窝整体。