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DOI	10.1016/j.atmosenv.2021.118857
	Modelling the transport of expelled cough particles using an Eulerian approach and the variational multiscale method
	Bayram A.; Korobenko A.
发表日期	2022
ISSN	1352-2310
卷号	271
英文摘要	Modelling the dispersion and deposition of expelled particles in an indoor environment is presented in this paper. The airflow is described by the incompressible Navier–Stokes equations, and the dispersion of a group of particles is modelled through an Eulerian transport equation coupled to the system of Navier–Stokes equations. The turbulent airflow and turbulent dispersion of particles are modelled by the variational multiscale method. Boundary integral terms are presented for weakly imposing essential boundary conditions as a wall model, and for modelling the deposition of particles on no-slip walls. The formulation is validated against experimental measurements and numerical data of the concentration of particles in a model chamber with success. A study case is presented where a coughing event is modelled in a real-life indoor environment under two different ventilation scenarios, where the first scenario considers only the air supply provided by the ceiling vents, while the second scenario considers in addition the air supply provided by two wall-mounted air conditioners. The coughing event is represented through realistic boundary conditions taken from experimental measurements. The dispersion and deposition patterns are compared between the two ventilation scenarios. The results show robustness of the presented formulation and encourages further developments in future works. © 2021 Elsevier Ltd
关键词	Eulerian drift-flux Expiratory events Finite elements Navier–Stokes VMS
语种	英语
scopus关键词	Air; Air conditioning; Boundary conditions; Deposition; Dispersions; Finite element method; Air supply; Drift flux; Eulerian; Eulerian approach; Eulerian drift-flux; Expiratory event; Indoor environment; Navier Stokes; Variational multiscale methods; VMS; Navier Stokes equations; airflow; atmospheric modeling; atmospheric transport; boundary condition; dispersion; equation; Eulerian analysis; methodology; ventilation; airflow; Article; coughing; dispersion; eddy diffusivity; Eulerian approach; finite element analysis; indoor environment; mathematical analysis; model
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248097
作者单位	Department of Mechanical and Manufacturing Engineering University of Calgary, Calgary, AB T2N 1N4, Canada
推荐引用方式 GB/T 7714	Bayram A.,Korobenko A.. Modelling the transport of expelled cough particles using an Eulerian approach and the variational multiscale method[J],2022,271.
APA	Bayram A.,&Korobenko A..(2022).Modelling the transport of expelled cough particles using an Eulerian approach and the variational multiscale method.ATMOSPHERIC ENVIRONMENT,271.
MLA	Bayram A.,et al."Modelling the transport of expelled cough particles using an Eulerian approach and the variational multiscale method".ATMOSPHERIC ENVIRONMENT 271(2022).