uDALES 1.0: a large-eddy simulation model for urban environments
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Urban environments are of increasing importance in climate and air quality research due to their central role in the population's health and well-being. Tools to model the local environmental conditions, urban morphology and interaction with the atmospheric boundary layer play an important role for sustainable urban planning and policy making. uDALES is a high-resolution, building-resolving, large-eddy simulation code for urban microclimate and air quality. uDALES solves a surface energy balance for each urban facet and models multi-reflection shortwave radiation, longwave radiation, heat storage and conductance, as well as turbulent latent and sensible heat fluxes. Vegetated surfaces and their effect on outdoor temperatures and energy demand can be studied. Furthermore, a scheme to simulate emissions and transport of passive and reactive gas species is present. The energy balance has been tested against idealised cases and the dispersion against wind tunnel experiments of the Dispersion of Air Pollution and its Penetration into the Local Environment (DAPPLE) field study, yielding satisfying results. uDALES can be used to study the effect of new buildings and other changes to the urban landscape on the local flow and microclimate and to gain fundamental insight into the effect of urban morphology on local climate, ventilation and dispersion. uDALES is available online under the GNU General Public License and remains under active maintenance and development.
Date Issued
2022-07-13
Date Acceptance
2022-04-28
Citation
Geoscientific Model Development, 2022, 15 (13), pp.5309-5335
ISSN
1991-959X
Publisher
Copernicus Publications
Start Page
5309
End Page
5335
Journal / Book Title
Geoscientific Model Development
Volume
15
Issue
13
Replaces
10044/1/98298
Copyright Statement
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/)
the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/)
License URL
Sponsor
Engineering and Physical Sciences Research Council
Engineering & Physical Science Research Council (EPSRC)
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000823726500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
EP/R023926/1
Subjects
Science & Technology
Physical Sciences
Geosciences, Multidisciplinary
Geology
DIFFUSE VIEW FACTORS
POLLUTANT DISPERSION
RADIATION MODEL
WIND-TUNNEL
HEAT-ISLAND
ENERGY
FLOW
OBSTACLE
WATER
COMFORT
Publication Status
Published