Large bandwidth at mm-wave is crucial for 5G and beyond but the high path loss (PL) requires highly accurate PL prediction network planning optimization. Statistical models with slope-intercept fit fall short in capturing large variations seen urban canyons, whereas ray-tracing, capable of characterizing site-specific features, faces challenges describing foliage street clutter associated refle...

This study was conducted to examine the effect on airflow of shape an urban road green belt in asymmetrical street canyon. In this paper, field at pedestrian height with different building ratios (ASF) both sides is modeled and simulated using computational fluid dynamics (CFD) software, ANSYS FLUENT, flow rate characteristic distribution index average intensity are used evaluate analyze level....

Air pollution remains a major environmental and health concern in urban environments, especially street canyons that show increased levels due to lack of natural ventilation. Previous studies have investigated the relationship between canyon morphology in-canyon levels. However, these are typically limited scale single city-wide assessments on this matter scarce. In 2018, NO2 concentrations wer...

Martilli’s urban parameterization scheme is improved and implemented in a mesoscale model in order to take into account the typical effects of a real city on the air temperature near the ground and on the surface exchange fluxes. The mesoscale model is run on a single column using atmospheric data and radiation recorded above roof level as forcing. Here, the authors validate Martilli’s urban bo...

The purpose of this article is to show how the dispersion of air pollutants in a street canyon could be evaluated (we take as an example Bonaparte Street in the 6th district of Paris) so as to estimate the pollutants concentrations in all points even if there are no stations of measurement. This study, which was made for Airparif, is based on a three dimensional air dispersion model called MISK...