Numerical calculation and analysis of filtration performance of an effective novel structural fiber for PM2.5.

ABSTRACT: In this study, a novel fiber with slit-crescent-shaped cross-section is proposed to enhance the filtration performance of PM2.5 in fibrous filtration. The collection efficiency of this fiber is simulated by using a Brownian dynamics simulation technique, and its filtration pressure drop is obtained by numerically solving Navier-Stokes equation with Fluent software. A parametric study is performed to improve the optimum filtration performance of the slit-crescent-shaped fiber via adjusting its structural parameters (dimensionless center-to-center spacing and slit width). Results indicate that at the optimal condition, i.e., when dimensionless slit width ranges from 0.2 to 0.4, collection efficiency is enhanced by 13.1%-101.1% relative to the circular fiber for particles ranging from 0.1μm t

SUBMITTER: Yang H 

PROVIDER: S-EPMC7580886 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature