Tall building influence on city wind pattern
INTERNATIONAL JOURNAL OF MODERN PHYSICS C, (2018)DOI: 10.1142/S0129183118500869
Abstract
The population growth in big urban centers generates the necessity for
tall buildings. This phenomenon happens also in tourist regions where it
is necessary to host many people. However, locations with high buildings
interfere with the flow of the wind and can affect the comfort and
safety of pedestrians at street level. Tall buildings barrier reduces
the natural ventilation in regions far from the beach. This work
presents the results concerning the effects created by tall buildings on
Mucuripe beach, Fortaleza, Brazil. We performed numerical simulations to
verify the wind interference with buildings in an area of 1.6 x 10(5)
m(2) , using the OpenFOAM toolbox, to solve the Reynolds Averaged
Navier-Stokes (RANS) equations with the k-epsilon turbulence model. The
results showed how the obstacles alter the airflow. From them, one can
identify the regions with reduced safety and pedestrian comfort, and
also the weak wind zone created by the downstream of the constructions
for the different wind directions that are locally observed.