A network model and numerical simulations of flow distributions in packed bed reactors with different packing structures

Principles, technology, and application of transfer processes for energy saving and storage

“…此 外, GSCPB中沿程截面上的速度分布更加均匀, 因此 其推流度更高(图12). 因此, 格栅的引入不仅易于有序 堆积结构的实现, 还可以改善流动分布不均匀性, 提高 推流度, 减小流阻和热阻, 从而增强综合换热性能 [34,41] . [38] .…”

“…Copyright©2019, Elsevier. (a) 格栅-颗粒复合堆 积床; (b) 颗粒无序堆积床 图 13 网络模型和CFD计算获得的流量和速度分布对 比 [34,41] . Copyright©2020, Elsevier.…”

Analysis of Void Structure in Deforming Packed Bed of Mono-dispersed Spherical Particles

“…Recent approaches have tried to reflect the actual void structure to the formation of the artificial network. [38][39][40][41][42][43] Larachi and coworker 38,39) converted computed tomography image to the network with spherical void spaces and connecting throats. The other researchers tried to extract void information from the computed or reproduced packing structures through distribution of sectional void space 40) or topological techniques.…”

“…The other researchers tried to extract void information from the computed or reproduced packing structures through distribution of sectional void space 40) or topological techniques. [41][42][43] With these techniques, important information about the void in the packed bed such as the void network connection, distribution of throat radii, and so on can be revealed, as well as the fluid motion and pressure drop. To apply the network modeling to the cohesive zone of blast furnace, information about the void structure should be further discussed by relating with the bed deformation.…”