Lattice Boltzmann simulation on porous structure and soot accumulation
Lattice Boltzmann simulation on porous structure and soot accumulation
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DOI：
10.1016/j.matcom.2006.05.021
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发表时间：
2006-09-09
影响因子：
4.6
通讯作者：
Misawa, Masaki
中科院分区：
文献类型：
--
作者：
Yamamoto, Kazuhiro;Satake, Shingo;Misawa, Masaki
在这项研究中，我们使用格子玻尔兹曼方法，模拟碳烟在多孔介质中的积累，检查颗粒捕集器（DPF）的柴油机颗粒过滤器（DPF）。在给定孔隙率的条件下，对不同内部结构的多孔介质进行了数值模拟。结果表明，在两种情况下，压力场基本相同，得到了与真实的Ni-Cr金属样品相似的多孔结构。在碳烟堆积过程的模拟中，碳烟附着在多孔壁面上的速度场发生了变化。压降大大增加。有趣的是，摩擦因子小于Ergun方程的实验预测值。(c)2006年IMACS。Elsevier B. V.出版，保留所有权利。
In this study, using the lattice Boltzmann method, we simulate soot accumulation in porous media to examine the particle trap in a diesel particulate filter (DPF). The porous media are numerically formed for different inner structure with given porosity. The porous structure similar to the real sample, Ni-Cr metal, can be obtained, where the pressure fields in both cases are almost the same. In the simulation of soot accumulation, the velocity field is changed when the soot is attached to the porous wall. The pressure drop is largely increased. Interestingly, the friction factor is smaller than experimentally predicted value by Ergun equation. (c) 2006 IMACS. Published by Elsevier B.V. All rights reserved.