Analysis of fluid permeation through a particle-packed layer using an electric resistance network as an analogy
Analysis of fluid permeation through a particle-packed layer using an electric resistance network as an analogy
复制标题
使用电阻网络作为类比分析流体通过颗粒填充层的渗透
DOI：
10.1016/j.powtec.2008.08.026
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发表时间：
2009
影响因子：
5.2
通讯作者：
K. Okuyama
中科院分区：
文献类型：
--
作者：
Y. Endo;C. Ngan;A. Nandiyanto;Ferry Iskandar;K. Okuyama
对非均匀结构颗粒填充床的流体渗透阻力进行了理论和实验研究，以确定压降与空气流量之间的关系。本实验采用了由不同类型粉末组成的多块结构的颗粒床。为了简化设计和操作，使用模型床模拟了由于颗粒尺寸、颗粒形状和堆积密度的局部变化而导致的非均匀结构的实际粉末床。用网络电路类比的方法描述了流体在床层内颗粒间以之字形流动的理论模型。结果表明，理论模型与实验数据吻合较好。结果还验证了采用非均匀结构时，流体在各个方向上的流动是不规则的。此外，本研究还表明，由于床层内流动路径的不规则性，应考虑“曲折”的概念。因此，本文的研究结果表明，电阻网络类比在解决非均匀结构的实际颗粒层中的流体渗透问题时可能是有用的。
Fluid permeation resistance through a particle-packed bed with a non-uniform structure was investigated both theoretically and experimentally to confirm the relationship between pressure drop and air flow rate. Multiple-block construction consisting of various types of powders in the particle bed was used in this experiment. With the goal of design and operation simplification, a model bed was used to simulate an actual powder bed with a non-uniform structure due to local variation in particle size, particle shape and packing density. An electrical network circuit analogy was used to express the theoretical model bed where fluid flows in a zigzag manner among particles in the bed. The results showed good agreement between the theoretical model and experimental data. The results also verified that the fluid flow was irregular in all directions when using the non-uniform structure. In addition, the present study demonstrated that the concept of “tortuosity” should be considered due to the irregular flow path in the bed. Thus, the results of the present study suggest that the electric resistance network analogy might be useful in solving the problem of fluid permeation in actual particle layers with non-uniform structures.