Computational fluid dynamics challenge on indoor dispersion of pathogen-laden aerosols

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(2)

Published: Feb. 1, 2025

This paper presents and discusses the results of “2024 International Computational Fluid Dynamics Challenge on long-range indoor dispersion pathogen-laden aerosols” aimed at assessing ability different computational codes turbulence models to reproduce particles produced by a turbulent natural convection flow enclosed in room sized cubical cavity. A total 12 research groups from ten countries have conducted 15 simulations same configuration solving Reynolds averaged Navier–Stokes (RANS) equations, unsteady (URANS) equations or using scale adaptive (SAS), large-eddy (LES), hybrid (URANS-LES) techniques. Results for velocity field particle provided are compared extensively, including reference direct numerical simulation (DNS). In general, LES methods time-averaged correctly, spatial distribution kinetic energy, dispersion. The performance SAS is similar that while predictions RANS URANS exhibit larger deviations with respect DNS. better reproduced capture correctly energy.

Language: Английский

A multi-domain simulation approach for enhanced indoor environmental quality in offices: Challenges and opportunities

Energy and Buildings, Journal Year: 2025, Volume and Issue: unknown, P. 115829 - 115829

Published: May 1, 2025

Language: Английский