A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Near-field pollutant dispersion in the built environment by CFD and wind tunnel simulations
Abstract Buildings are always found to be in the vicinity of other buildings, especially in urban areas. This causes effluents released from stacks located on one of the buildings to re-enter the same or an adjacent building, generating potential health problems to the occupants of the building. Earlier, Computational Fluid Dynamics (CFD) has been used in simulating pollutant transport for isolated buildings, with only few studies examining the effects of adjacent buildings. In this paper three cases that include an isolated low-rise building (source), a taller building placed upwind of the source and a case with taller buildings placed upwind and downwind of the source were considered. CFD simulations using the Realizable k–ε model for different turbulent Schmidt numbers (Sc t) and wind tunnel experiments were performed for these cases. was also used to assess plume dispersion for the isolated building. It was found that a strong dependence of Sc t on CFD simulations of pollutant transport exists for the isolated building configuration. However, variations of Sc t have less impact on assessing pollutant dispersion in the presence of adjacent buildings. The model predicted very low dilutions for the isolated building, making it necessary to re-visit its formulations.
Near-field pollutant dispersion in the built environment by CFD and wind tunnel simulations
Abstract Buildings are always found to be in the vicinity of other buildings, especially in urban areas. This causes effluents released from stacks located on one of the buildings to re-enter the same or an adjacent building, generating potential health problems to the occupants of the building. Earlier, Computational Fluid Dynamics (CFD) has been used in simulating pollutant transport for isolated buildings, with only few studies examining the effects of adjacent buildings. In this paper three cases that include an isolated low-rise building (source), a taller building placed upwind of the source and a case with taller buildings placed upwind and downwind of the source were considered. CFD simulations using the Realizable k–ε model for different turbulent Schmidt numbers (Sc t) and wind tunnel experiments were performed for these cases. was also used to assess plume dispersion for the isolated building. It was found that a strong dependence of Sc t on CFD simulations of pollutant transport exists for the isolated building configuration. However, variations of Sc t have less impact on assessing pollutant dispersion in the presence of adjacent buildings. The model predicted very low dilutions for the isolated building, making it necessary to re-visit its formulations.
Near-field pollutant dispersion in the built environment by CFD and wind tunnel simulations
Chavez, Mauricio (author) / Hajra, Bodhisatta (author) / Stathopoulos, Ted (author) / Bahloul, Ali (author)
Journal of Wind Engineering and Industrial Aerodynamics ; 99 ; 330-339
2011-01-01
10 pages
Article (Journal)
Electronic Resource
English
Pollution , Dispersion , CFD , Schmidt number , Multiple building , Re-ingestion , Stack , Wind tunnel
Near-field pollutant dispersion in the built environment by CFD and wind tunnel simulations
| Online Contents | 2011
Ten questions concerning modeling of near-field pollutant dispersion in the built environment
| British Library Online Contents | 2016
Ten questions concerning modeling of near-field pollutant dispersion in the built environment
| Online Contents | 2016
Ten questions concerning modeling of near-field pollutant dispersion in the built environment
| Online Contents | 2016