University of Michigan Researchers Have Provided New Study Findings on Applied Physical Science (On the utility of a well-mixed model for predicting disease transmission on an urban bus)

摘要

2021 SEP 21 (NewsRx) - By a News Reporter-Staff News Editor at Disease Prevention Daily - Researchers detail new data in applied physical science. According to news originating from the University of Michigan by NewsRx editors, the research stated, "The transport of virus-laden aerosols from a host to a susceptible person is governed by complex turbulent airflow and physics related to breathing, coughing and sneezing, mechanical and passive ventilation, thermal buoyancy effects, surface deposition, masks, and air filtration." The news correspondents obtained a quote from the research from University of Michigan: "In this paper, we study the infection risk via airborne transmission on an urban bus using unsteady Reynolds-averaged Navier-Stokes equations and a passive-scalar model of the virus-laden aerosol concentration. Results from these simulations are directly compared to the widely used well-mixed model and show significant differences in the concentration field and number of inhaled particles. Specifically, in the limit of low mechanical ventilation rates, the well-mixed model will overpredict the concentration far from the infected passenger and substantially underpredict the concentration near the infected passenger."