uDALES 1.0: a large-eddy simulation model for urban environments

Abstract. Urban environments are of increasing importance in climate and air quality research due to their central role the population's health well-being. Tools model local environmental conditions, urban morphology interaction with atmospheric boundary layer play an important for sustainable planning policy making. uDALES is a high-resolution, building-resolving, large-eddy simulation code microclimate quality. solves surface energy balance each facet models multi-reflection shortwave radiation, longwave heat storage conductance, as well turbulent latent sensible fluxes. Vegetated surfaces effect on outdoor temperatures demand can be studied. Furthermore, scheme simulate emissions transport passive reactive gas species present. The has been tested against idealised cases dispersion wind tunnel experiments Dispersion Air Pollution its Penetration into Local Environment (DAPPLE) field study, yielding satisfying results. used study new buildings other changes landscape flow gain fundamental insight climate, ventilation dispersion. available online under GNU General Public License remains active maintenance development.