Natural ventilation systems in Pitti Palace Boundary-layer wind tunnel tests for the analysis of wind speed profiles and turbulence phenomena

摘要

This work starts from the Palladio observations on chimneys of the Quattro libri dell’Architettura published in Venice on 1570, referring to which a wide survey was executed to study similar technologies. Pitti Palace in Florence, and in particular the summer lodgings built for Ferdinando II during 1621, is one of the examples that was studied. After finding all the historical maps a direct survey was made using a scanner-laser 3D. This was necessary to build a plastic model of the building corresponding to the seventeenth century architectural structure. This model has been realized into an appropriate scale referring to the experimental investigations that will be performed inside the boundary-layer wind tunnel of the C.R.I.A.C.I.V. (Inter-University Research Centre on Wind Engineering and Building Aerodinamycs) located in Prato, that allows to simulate the atmospheric conditions. The analysis inside the wind tunnel, using tracers, allows the simulation of air flows dynamic effects through the rooms of building, taking into account shape and roughness of different surfaces and the urban morphology around the palace. The model includes a portion of the garden and the square with the neighbouring buildings. The experimental investigation will allow natural air conditioning systems to be verified and tested.