@Article{CiCP-23-4,
author = {},
title = {Microfiber Filter Performance Prediction Using a Lattice Boltzmann Method},
journal = {Communications in Computational Physics},
year = {2018},
volume = {23},
number = {4},
pages = {910--931},
abstract = {<p style="text-align: justify;">Fibrous filter media are made of small fibers (micro and nanoscale). In these
cases, the Knudsen number can be appreciable and the slip phenomenon on the fluid
boundary surfaces should be considered. For this purpose, the mesoscopic approach
lattice Boltzmann method (LBM) can be applied to predict the flow, with appropriate
boundary conditions (BC). This paper analyzes a fibrous microfilter, including the
construction of the geometric model from scanning electron microscope (SEM) images,
and the comparison with experimental results and macroscopic approach modeling. A
slip condition was implemented in open-source code OpenLB, based on specular reflections
of the populations. The validation of the proposed boundary condition was
carried out by simulations in a 2D channel, disposed at 45 and 90 degrees, and simple
cases of a flow around an octagon. The experimental order of convergence (EOC) was
evaluated for all cases and the results of the pressure drop around the octagon were
compared to data obtained by a macroscopic approach. A good agreement between the
pressure drop through the filter media and the results obtained numerically and experimentally
was observed. These findings endorse the accuracy of the implemented slip
BC and the importance in considering this phenomenon in microscale systems.</p>},
issn = {1991-7120},
doi = {https://doi.org/10.4208/cicp.OA-2016-0180},
url = {https://global-sci.com/article/80037/microfiber-filter-performance-prediction-using-a-lattice-boltzmann-method}
}