In this work, we use a lattice Boltzmann-cellular automaton (LB-CA) probabilistic model to simulate the particle filtration processes of rectangular fibers. The pressure drop and collection efficiency for the diffusion dominant regime are investigated. By normalizing the pressure drop and collection efficiency of rectangular fibers with those of the circular fiber calculated by using the existing classical expressions, the corresponding ratios are oftained. Then the Levenberg-Marquardt algorithm is used to obtain the fitting expressions of the ratios. The proposed fitting expressions are used to calculate the pressure drops and diffusional collection efficiencies of rectangular fibers under different operation conditions. The results show that the pressure drop of rectangular fibers is dependent on the orientation angle and the aspect ratio and that the diffusional collection efficiency is proportional to the aspect ratio but almost independent of the orientation angle.
HUANG Haokai
,
ZHAO Haibo
. Numerical study of pressure drop and diffusional collection efficiency of rectangular fibers in filtration[J]. Journal of University of Chinese Academy of Sciences, 2017
, 34(2)
: 210
-217
.
DOI: 10.7523/j.issn.2095-6134.2017.02.014
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