Autor según el artículo: Lavrinenko, Akim; Fabregat, Alexandre; Pallares, Jordi;
Departamento: Enginyeria Mecànica
Autor/es de la URV: Fabregat Tomàs, Alexandre / Lavrinenko, Akim / Pallarés Curto, Jorge María
Palabras clave: Urans Speech Lagrangian particle tracking Evaporation Droplets Dns Covid-19 Cough Cfd Aerosol dispersion
Resumen: In this work we compare the DNS results (Fabregat et al. 2021, Fabregat et al. 2021) for a mild cough already reported in the literarure with those obtained with a compressible URANS equations with a k-epsilon turbulence model. In both cases, the dispersed phase has been modelled as spherical Lagrangian particles using the one-way coupling assumption. Overall, the URANS model is capable of reproducing the observed tendency of light particles under 64 mu m in diameter to rise due to the action of the drag exerted by the buoyant puff generated by the cough. Both DNS and URANS found that particles above 64 mu m will tend to describe parabolic trajectories under the action of gravitational forces. Grid independence analysis allows to qualify the impact of increasing mesh resolution on the particle cloud statistics as flow evolves. Results suggest that the k-epsilon model overpredicts the horizontal displacement of the particles smaller than 64 mu m while the opposite occurs for the particles larger than 64 mu m.
Áreas temáticas: Mechanics Mechanical engineering Engineering, mechanical Computational mechanics
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: akim.lavrinenko@urv.cat alexandre.fabregat@urv.cat jordi.pallares@urv.cat
Identificador del autor: 0000-0002-6032-2605 0000-0003-0305-2714
Fecha de alta del registro: 2024-09-07
Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
Enlace a la fuente original: https://link.springer.com/article/10.1007/s10409-022-09032-x
URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: Acta Mechanica Sinica. 38 (8):
Referencia de l'ítem segons les normes APA: Lavrinenko, Akim; Fabregat, Alexandre; Pallares, Jordi; (2022). Comparison between fully resolved and time-averaged simulations of particle cloud dispersion produced by a violent expiratory event. Acta Mechanica Sinica, 38(8), -. DOI: 10.1007/s10409-022-09032-x
DOI del artículo: 10.1007/s10409-022-09032-x
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2022
Tipo de publicación: Journal Publications