ArticleSeparation and purification technology2022
Filtering efficiency model that includes the statistical randomness of non-woven fiber layers in facemasks.
Article in Separation and purification technology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Hybrid modeling for optimizing electrospun polyurethane nanofibrous membranes in air filtration applications.Scientific reports · 2025Article
- Microstructural evaluation and recommendations for face masks in community use to reduce the transmission of respiratory infectious diseases.Computer methods and programs in biomedicine · 2022Article
- Uncertainty analysis of facemasks in mitigating SARS-CoV-2 transmission.Environmental pollution (Barking, Essex : 1987) · 2022Article
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6 authors.
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Abstract
Facemasks have become important tools to fight virus spread during the recent COVID-19 pandemic, but their effectiveness is still under debate. We present a computational model to predict the filtering efficiency of an N95-facemask, consisting of three non-woven fiber layers with different particle capturing mechanisms. Parameters such as fiber layer thickness, diameter distribution, and packing density are used to construct two-dimensional cross-sectional geometries. An essential and novel element is that the polydisperse fibers are positioned randomly within a simulation domain, and that the simulation is repeated with different random configurations. This strategy is thought to give a more realistic view of practical facemasks compared to existing analytical models that mostly assume homogeneous fiber beds of monodisperse fibers. The incompressible Navier-Stokes and continuity equations are used to solve the velocity field for various droplet-laden air inflow velocities. Droplet diameters are ranging from 10 nm to 1.0 µm, which covers the size range from the SARS-CoV-2 virus to the large virus-laden airborne droplets. Air inflow velocities varying between 0.1 m·s
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