Wind effects on mechanically depressurized indoor containment zones: Impact of uncertainties in computational fluid dynamics wind pressure on ventilation network model output DOI Creative Commons
A.K.R. Jayakumari, Alessio Ricci, Romain Guichard

и другие.

Physics of Fluids, Год журнала: 2025, Номер 37(4)

Опубликована: Апрель 1, 2025

Hazardous pollutant containment zones should be maintained at a pressure lower than the outdoor atmospheric to prevent pollutants from escaping environment. However, wind conditions can cause breaching of zone that is established through mechanical ventilation. This paper combines external (Pe) time series on an internally depressurized building with carefully designed ventilation network analyze indoor (Pi) and breach duration. The Pe data are obtained by wind-tunnel (WT) tests computational fluid dynamics (CFD) simulations large-eddy simulation (LES) scale-adaptive (SAS). objectives (1) comparing results WT CFD; (2) assessing impact uncertainties in CFD resulting Pi duration; (3) estimating duration for initial case study depressurization -40 Pa reference speed (Uref) 12.65 m/s height. discussed terms dimensionless coefficients (Cpe Cpi). It shown LES especially SAS Cpe deviate substantially values but these Cpi remains fairly limited. Deviations statistics fall within experimental uncertainty, deviates generally less 10% result. Estimated durations Uref = m/s, however, go up 80% spite −40 depressurization, stressing importance this type studies.

Язык: Английский

Atmospheric wind effects on depressurization for indoor asbestos pollution containment: experimental analysis and a ventilation network model validation DOI Creative Commons
A.K.R. Jayakumari, Romain Guichard, Stefanie Gillmeier

и другие.

Building and Environment, Год журнала: 2025, Номер unknown, С. 112664 - 112664

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

1
Dynamic wind patterns and indoor/outdoor pollutant dispersion in the simplified building array: statistical and spectral analyses from scaled outdoor experiments DOI

Yuwei Dai,

Wanli Tu,

Xiaoyan Zhang

и другие.

Building and Environment, Год журнала: 2025, Номер unknown, С. 112861 - 112861

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Wind effects on mechanically depressurized indoor containment zones: Impact of uncertainties in computational fluid dynamics wind pressure on ventilation network model output DOI Creative Commons
A.K.R. Jayakumari, Alessio Ricci, Romain Guichard

и другие.

Physics of Fluids, Год журнала: 2025, Номер 37(4)

Опубликована: Апрель 1, 2025

Hazardous pollutant containment zones should be maintained at a pressure lower than the outdoor atmospheric to prevent pollutants from escaping environment. However, wind conditions can cause breaching of zone that is established through mechanical ventilation. This paper combines external (Pe) time series on an internally depressurized building with carefully designed ventilation network analyze indoor (Pi) and breach duration. The Pe data are obtained by wind-tunnel (WT) tests computational fluid dynamics (CFD) simulations large-eddy simulation (LES) scale-adaptive (SAS). objectives (1) comparing results WT CFD; (2) assessing impact uncertainties in CFD resulting Pi duration; (3) estimating duration for initial case study depressurization -40 Pa reference speed (Uref) 12.65 m/s height. discussed terms dimensionless coefficients (Cpe Cpi). It shown LES especially SAS Cpe deviate substantially values but these Cpi remains fairly limited. Deviations statistics fall within experimental uncertainty, deviates generally less 10% result. Estimated durations Uref = m/s, however, go up 80% spite −40 depressurization, stressing importance this type studies.

Язык: Английский

Процитировано

0