Wind effects on a tall building with permeable envelopes

The comprehension of the wind effects on permeable building envelopes represents a challeng-ing task. This work deals with three-dimensional wind tunnel tests on a reference geometry rep-resenting a tall building equipped with some permeable envelopes. The aim of the study is to understand if and how permeable façades may cause local or global effects on the building aer-odynamics. The early results from pressure measurements seem to indicate that, in certain con-figurations, flow mechanisms of interaction between internal and external flows can occur, similar to those observed for preliminary two-dimensional studies.