Flow structure and near-field dispersion in arrays of building-like obstacles
TLDR
In this paper, the authors analyzed data from direct numerical simulations in arrays of building-like obstacles and found that the mean flow structure around the buildings exert a strong influence over the dispersion of material in the near field.About:
This article is published in Journal of Wind Engineering and Industrial Aerodynamics.The article was published on 2014-02-01 and is currently open access. It has received 54 citations till now. The article focuses on the topics: Dispersion (optics) & Atmospheric dispersion modeling.read more
Citations
More filters
Journal ArticleDOI
100 years of progress in boundary layer meteorology
Margaret A. LeMone,Wayne M. Angevine,Wayne M. Angevine,Christopher S. Bretherton,Fei Chen,Jimy Dudhia,Evgeni Fedorovich,Kristina B. Katsaros,Donald H. Lenschow,Larry Mahrt,Edward G. Patton,Jielun Sun,Michael Tjernström,Jeffrey Weil +13 more
TL;DR: In the last 100 years, boundary layer meteorology grew from the subject of mostly near-surface observations to a field encompassing diverse atmospheric boundary layers (ABLs) around the world as mentioned in this paper.
Journal ArticleDOI
Validation and optimization of SST k-ω turbulence model for pollutant dispersion within a building array
TL;DR: In this article, the authors report and quantitatively validate the shear stress transport (SST) k-ω turbulence closure model and its transitional variant for pollutant dispersion under complex urban environment.
Journal ArticleDOI
Street canyon ventilation and airborne pollutant dispersion: 2-D versus 3-D CFD simulations
TL;DR: Wang et al. as discussed by the authors investigated the applicability of 2D CFD simulations on street canyon ventilation for 3D scenarios and identified two important ventilation mechanisms for controlling ventilation and dispersion in a 3D street canyon.
Journal ArticleDOI
Wind driven natural ventilation in the idealized building block arrays with multiple urban morphologies and unique package building density
TL;DR: Wang et al. as discussed by the authors investigated the wind flow through the building arrays by the use of renormalization group (RNG) k-e turbulence model and found that a low level of packaging building density could significantly enhance the ventilation rate.
Journal ArticleDOI
Effect of the numerical viscosity on reproduction of mean and turbulent flow fields in the case of a 1:1:2 single block model
TL;DR: In this paper, large-eddy simulations were performed for the velocity fields around a 1:1:2 single block model to clarify the effect of the numerical viscosity in different advection schemes.
References
More filters
Journal ArticleDOI
Flow and dispersion in urban areas
Rex Britter,Steven R. Hanna +1 more
TL;DR: In this article, the authors address flow and dispersion in urban areas at four scales: regional, city, neighborhood, and street, and address the most appropriate framework to study and quantify the result.
Journal ArticleDOI
Mean Flow and Turbulence Statistics Over Groups of Urban-like Cubical Obstacles
TL;DR: In this article, a simulation of turbulent flow over regular arrays of urban-like, cubical obstacles is presented, and results are analyzed in terms of a formal spatial averaging procedure to enable interpretation of the flow within the arrays as a canopy flow, and of flow above as a rough wall boundary layer.
Journal ArticleDOI
Structure of turbulent flow over regular arrays of cubical roughness
TL;DR: In this paper, the structure of turbulent flow over large roughness consisting of regular arrays of cubical obstacles is investigated numerically under constant pressure gradient conditions, and the results are analyzed in terms of first and second-order statistics, by visualization of instantaneous flow fields and by conditional averaging.
Journal ArticleDOI
Mixing and transport in urban areas
TL;DR: In this article, the authors review the important fluid dynamical processes that control dispersion in the first kilometre, the neighbourhood scale, when much of the material remains within the urban canopy.
Journal ArticleDOI
A comparison of results from scaled field and wind tunnel modelling of dispersion in arrays of obstacles
TL;DR: In this article, the problem of plume dispersion around urban buildings has been investigated by physical modeling using arrays of building-like obstacles at two scales (1/100 and 1/10) in a boundary layer wind tunnel and at a field site.