Recent Advances in Urban Ventilation Assessment and Flow Modelling

Edited by
April 2019
448 pages
  • ISBN978-3-03897-806-0 (Paperback)
  • ISBN978-3-03897-807-7 (PDF)

This book is a reprint of the Special Issue Recent Advances in Urban Ventilation Assessment and Flow Modelling that was published in

Chemistry & Materials Science
Environmental & Earth Sciences
This book contains twenty-one original papers and one review paper published by internationally recognized experts in the Atmosphere Special Issue "Recent Advances in Urban Ventilation Assessment and Flow Modelling", years 2017–2019. The Special Issue includes contributions on recent experimental and modelling works, techniques, and developments mainly tailored to the assessment of urban ventilation on flow and pollutant dispersion in cities. The study of ventilation is of critical importance, as it addresses the capacity with which a built urban structure is capable of replacing the polluted air with ambient fresh air. Here, ventilation is recognized as a transport process that improves local microclimate and air quality and closely relates to the term “breathability”. The efficiency with which street canyon ventilation occurs depends on the complex interaction between the atmospheric boundary layer flow and the local urban morphology.The individual contributions to this Issue are summarized and categorized into four broad topics: (1) outdoor ventilation efficiency and application/development of ventilation indices, (2) relationship between indoor and outdoor ventilation, (3) effects of urban morphology and obstacles to ventilation, and (4) ventilation modelling in realistic urban districts. The results and approaches presented and proposed will be of great interest to experimentalists and modelers, and may constitute a starting point for the improvement of numerical simulations of flow and pollutant dispersion in the urban environment, for the development of simulation tools, and for the implementation of mitigation strategies.
  • Paperback
© 2019 by the authors; CC BY-NC-ND license
street canyon; seasonal variation; air flow; pollutant dispersion; pollutant removal; natural ventilation; residential wind environments; building arrangements; space pattern; ventilation efficiency; CFD simulation; air change rate (ACH); flow and turbulence profiles; hypothetical urban areas; street-level ventilation; ventilation assessment; wind-tunnel dataset; street vegetation; CFD; aerodynamic and deposition; tree scenarios; urban planning; indoor-outdoor; mass concentration; nanoparticles; particle number concentration (PNC); PM10; PM2.5; sampling; Total Suspended Particles (TSP); ultrafine particles (UFP); urban street canyon; wind enhancement; architectural intervention; water channel experiment; CFD simulation; passive ventilation; street canyon; computational fluid dynamics (CFD); ventilation effectiveness; the age of air; convective boundary layer; LES; street-level ventilation; small open space; air change rate per hour (ACH); concentration decay method; urban age of air; computational fluid dynamic (CFD) simulation; natural ventilation; residential building; climate zone; thermal comfort; natural ventilation hour; Japan cities; building energy use; inter-building effect; highly-reflective building envelope; BEopt analysis; source apportionment; data assimilation; urban air quality modelling; wind environment; Natural Ventilation Potential (NVP); PM2.5; building–tree grouping patterns; Computational Fluid Dynamics (CFD); LES; ventilation; urban planning; dispersion; air quality; street canyon; traffic tidal flow; numerical simulation; vehicular pollution; non-uniform distribution of the pollution source; on-road air quality; traffic composition; high emitting vehicles; street canyon; mobile laboratory; CFD model; heat loss; optimisation; residential building; air quality; carbon dioxide concentration; ventilation system; wind pressure coefficient; airflow network; multiple linear regression; natural ventilation; urban layout; surrogate model; schematic urban environment; wind tunnel; LES; validation; street canyon; coherent structures; road tunnel; natural ventilation; wind catcher; intake fraction; street canyon; CFD; Large Eddy Simulation (LES); urban air quality; pedestrian exposure; concentration fluctuation; outdoor ventilation; urban morphology; building site coverage; ventilation efficiency; n/a