Z E M C H 2 0 1 2 I n t e r n a t i o n a l C o n f e r e n c e
258
Bellafiore and Staacke’s theories on the passive systems working are developed
according to their assumptions about the original architectural configuration.
Figure
7
: Longitudinal section. Original configuration and motion of the air. Hypothesis Staacke
Computational fluid dynamics (CFD)
Specific simulations were carried out using the Ansys Fluent CFD software to test the
hypotheses concerning the movement of air and temperature control inside the Zisa
Complex.
The model created considers the building architectural configuration, its position and its
orientation (Fig.3). The adopted architectural configuration is the most shared, proposed
by Prof. Bellafiore (Fig.5).
The model has been georeferenced to Palermo’s latitude and longitude coordinates
(Latitude 38.11°, Longitude 13.65°) and solar radiation values have been assigned in a
summer day (26th August) in order to guarantee a certain amount of shaded areas and
thermal gradient (Fig.8).
Figure 8
: Sun Stereographic Diagram (August 26)
The time interval analyzed is between 6 a.m. and 12 a.m. Moreover, between 12 a.m.
and 3 p.m., it has been considered the wind action, in order to simulate the effects of sea
