Urban buoyancy-driven air flow and modelling method: A critical review

SJ Mei, C Yuan - Building and Environment, 2022 - Elsevier
The evaluation of buoyancy effect on urban ventilation, especially on low wind conditions, is
important for the extreme urban heat islands to improve urban climate resilience. To provide …

Assessment of the dispersion of pollutants from automobile exhaust, taking into account relative humidity, pavement temperature, wind direction and speed, which …

A Issakhov, A Abylkassymova - … Communications in Heat and Mass Transfer, 2024 - Elsevier
This paper investigates the spread of pollutants in a residential area of Almaty city. To
implement the problem, special attention is paid to taking into account real weather …

Buoyant flows in street canyons: Validation of CFD simulations with wind tunnel measurements

J Allegrini, V Dorer, J Carmeliet - Building and Environment, 2014 - Elsevier
Computational fluid dynamics (CFD) is often used to predict flow structures in urban areas
for the determination of pollutant dispersion, human comfort or heat fluxes. During daytime …

A wind tunnel study on three-dimensional buoyant flows in street canyons with different roof shapes and building lengths

J Allegrini - Building and Environment, 2018 - Elsevier
Higher temperatures are measured in urban areas compared to surrounding rural areas due
to the urban heat island effect. One of the most efficient ways of removing heat from urban …

Effects of urban morphology on anthropogenic heat dispersion in tropical high-density residential areas

AS Adelia, C Yuan, L Liu, RQ Shan - Energy and Buildings, 2019 - Elsevier
Anthropogenic heat is constantly emitted to the urban environment in which could trigger a
vicious cycle: risen the air temperature, subsequently increase the cooling-energy …

Urban air quality modeling with full O3–NOx–VOC chemistry: Implications for O3 and PM air quality in a street canyon

MJ Kim, RJ Park, JJ Kim - Atmospheric Environment, 2012 - Elsevier
We examine transport and chemical transformation of reactive pollutants on an urban street
using a computation fluid dynamics (CFD) model coupled with full photochemistry of reactive …

Impacts of traffic tidal flow on pollutant dispersion in a non-uniform urban street canyon

T Ming, W Fang, C Peng, C Cai, R De Richter… - Atmosphere, 2018 - mdpi.com
A three-dimensional geometrical model was established based on a section of street
canyons in the 2nd Ring Road of Wuhan, China, and a mathematical model describing the …

Characteristics of flow and reactive pollutant dispersion in urban street canyons

SJ Park, JJ Kim, MJ Kim, RJ Park, HB Cheong - Atmospheric Environment, 2015 - Elsevier
In this study, the effects of aspect ratio defined as the ratio of building height to street width
on the dispersion of reactive pollutants in street canyons were investigated using a coupled …

Comparison of urban airflow between solar-induced thermal wall and uniform wall temperature boundary conditions by coupling CitySim and CFD

G Chen, L Rong, G Zhang - Building and Environment, 2020 - Elsevier
Previous studies investigated the urban wind airflow under the isothermal condition, solar-
induced thermal wall and uniform wall temperature boundary conditions. The differences in …

An improved three-dimensional simulation of the diurnally varying street-canyon flow

N Yaghoobian, J Kleissl, KT Paw U - Boundary-Layer Meteorology, 2014 - Springer
The impact of diurnal variations of the heat fluxes from building and ground surfaces on the
fluid flow and air temperature distribution in street canyons is numerically investigated using …