Source avec lien : Applied Sciences, 12(23). 10.3390/app122312381
Il est question dans cet article du développement d’une nouvelle technique de modélisation multi-échelle qui incorpore l’équation de l’équilibre de la population dans une méthode standard de particules-sources-en-cellules. Ainsi, l’efficacité de la technique susmentionnée dans la modélisation de la génération de noyaux de gouttelettes est démontrée et discutée. L’impact des conditions limites de vitesse à l’embouchure est également évalué ainsi que l’effet des corrélations pour le transfert de masse montrant que leur négligence entraîne une sous-estimation de la distance atteinte par les gouttelettes.
COVID-19 pandemic promoted a lot of research activities in relation to mucosalivary fluid airborne transport. Indeed, infection mechanisms are the result of mucosalivary fluid droplets exchange and the knowledge in this area is still largely inadequate. One of the main challenges concerns the modelling of mucosalivary fluid complex nature. Specifically, this is a key element to predict small diameters dry nuclei formation which are highly relevant from the transmission risk point of view. For this reason, in this paper we present and discuss the development of a new multi-scale modelling technique which incorporates the Population Balance Equation into a standard particle-source-in-cell method. Thus, the effectiveness of the aforementioned technique in droplet nuclei generation modelling is showed and discussed. Also the impact of velocity boundary conditions at the mouth print is assessed as well as the effect of the correlations for mass transfer showing that their neglect causes an underestimation in distance reached by the droplets.