Analytical and numerical investigation of the airflow in face masks used for protection against COVID-19 virus--implications for mask design and usage

R Perić, M Perić - arXiv preprint arXiv:2005.08800, 2020 - arxiv.org
… of masks may not persist indefinitely so that protective masks … However, the filtration efficiency
of the filter material is not … -phase flow simulations are the equation for mass conservation …

[HTML][HTML] Medical face masks offer self-protection against aerosols: An evaluation using a practical in vitro approach on a dummy head

CM Sterr, IL Nickel, C Stranzinger… - PloS one, 2021 - journals.plos.org
… All the mask and respirator models were tested using three … We calculated this ratio for
particles sized 0.5 μm. … ; moreover, a certain number of viable virus particles need to be inhaled to …

[HTML][HTML] Quantitative modeling of the impact of facemasks and associated leakage on the airborne transmission of SARS-CoV-2

J Schmitt, J Wang - Scientific reports, 2021 - nature.com
… The ongoing worldwide outbreak of COVID-19 has set personal protective … a computational
model to calculate the ability of different types of facemasks to reduce the exposure to virus-…

A critical review on the role of leakages in the facemask protection against SARS‐CoV‐2 infection with consideration of vaccination and virus variants

J Schmitt, J Wang - Indoor air, 2022 - Wiley Online Library
… a computational model to compare the mitigation impact of … accurate estimation of the
protection provided by facemasks is … -efficiency face protection also called respiratory protective

Numerical analysis of the efficiency of face masks for preventing droplet airborne infections

K Onishi, A Iida, M Yamakawa, M Tsubokura - Physics of Fluids, 2022 - pubs.aip.org
… The protective efficiency of face masks suppressing droplet … However, the virus infection
prevention effect of face masks … impossible to calculate the face mask by 3D modeling of all the …

[HTML][HTML] Size-and time-dependent particle removal efficiency of face masks and improvised respiratory protection equipment used during the COVID-19 pandemic

A Pogačnik Krajnc, L Pirker, U Gradišar Centa… - Sensors, 2021 - mdpi.com
… were calculated with Equation (2) where the PRE was calculated in … against the spread
of the SARS-CoV-2 virus. A wide variety of materials used in masks and different mask models

[HTML][HTML] An overview of filtration efficiency through the masks: Mechanisms of the aerosols penetration

A Tcharkhtchi, N Abbasnezhad, MZ Seydani, N Zirak… - Bioactive materials, 2021 - Elsevier
… , or the infectious airborne viruses initiated from the sneezing, … 3D modeling of these masks
can quickly be done by taking … were used are the mass conservation equation, the three-…

[HTML][HTML] Fundamental protective mechanisms of face masks against droplet infections

CJ Kähler, R Hain - Journal of aerosol science, 2020 - Elsevier
… made of good filter material cannot reliably protect against droplet … be calculated. The pressure
drops provided in Table 1 are … persons in the environment and the viral load in the room is …

Strategies to minimize SARS-CoV-2 transmission in classroom settings: combined impacts of ventilation and mask effective filtration efficiency

DA Rothamer, S Sanders, D Reindl… - … and Technology for the …, 2021 - Taylor & Francis
… In this work, we define inhalable virus laden aerosol particles (bioaerosols) as … calculations
assuming 100% filtration efficiency for the purifier and no impact on the well-mixed model

[HTML][HTML] A computational model for predicting changes in infection dynamics due to leakage through N95 respirators

P Hariharan, N Sharma, S Guha, RK Banerjee… - Scientific Reports, 2021 - nature.com
equation prescribing the trajectory of each particle. The differential … the protective equipment
(inward particle flux, outward particle flux). For the present risk assessment, influenza virus