Numerical investigation on diffusion length, suspending time, and forces acting on COVID-19 virus particles in an indoor environment

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This study used CFD simulations to compute diffusion length and suspending time of COVID-19 virus particles in air, considering Brownian, drag, Saffman, and weight forces under various initial conditions.

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Abstract

Abstract The purpose of this study is to study two-dimensional CFD simulations of the COVID-19 virus two-phase flow in steady air with the Euler-Lagrange method. This was accomplished by developing CFD programs in MATLAB and simulations in COMSOL software. Brownian, drag, Saffman, and weight forces are considered for studying the dynamics of virus flow. In order to study the motion of viruses, Brownian, drag forces, and the weight of viruses play an important role. In this study, three different diameters of virus particles were considered, with three different initial conditions and three different initial velocities. The diffusion length and suspending time of viruses in the air have been computed in each of the nine states.
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This was accomplished by developing CFD programs in MATLAB and simulations in COMSOL software. Brownian, drag, Saffman, and weight forces are considered for studying the dynamics of virus flow. In order to study the motion of viruses, Brownian, drag forces, and the weight of viruses play an important role. In this study, three different diameters of virus particles were considered, with three different initial conditions and three different initial velocities. The diffusion length and suspending time of viruses in the air have been computed in each of the nine states. Plasma and Fluids Mechanical Engineering Environmental Engineering CFD Two Phase-flow COVID-19 virus Euler-Lagrange method Diffusion Length Suspending Time Full Text Cite Share Download PDF Status: Posted Version 3 posted You are reading this latest preprint version Show more versions Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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