Natural ventilation and cfd in the historic city: the quality of the urban project

Attention to the design process must necessarily include the living space at different scales, not only the individual building, but the entire urban space. In this process, which goes from the design phase to the construction, use and disposal phases, the cli-matic theme must also be included, in order to achieve a condition of balance between situations of comfort and discomfort. Starting from the porosity of the architectural or-ganism, the focus has therefore been on natural ventilation as one of the factors that affect the urban climate, opening a parenthesis on the potential and limitations in the use of CFD, for the diagnosis and prognosis of the urban project in a specific field of investigation: the historic city.