Naturally Ventilated Double Skin Façades: Comparisons Between Different CFD Models

Double Skin Façades (DSFs) have become widespread solutions commonly employed in new and existing buildings the last decades. Since its introduction, multi-layered façade has improved profoundly, assuming more articulate complex shapes for better energy performances combining advanced technologies as innovative materials or systems. However, effectiveness thermal behaviour of DSFs should be carefully evaluated since design phase by selecting proper methodologies, thus avoiding inaccurate results. In fact, correct estimation airflows inside DSF channels is heavily influenced simulation settings. Furthermore, lack measurements empirical validations field primary source concern researchers. Considering available numerical methods investigating DSFs, Computational Fluid Dynamics (CFD) simulations proven to most appropriate option. The present work compares multiple Façade configurations performing CFD analyses adopting different turbulence models bi- three-dimensional domains. results underline capability 2D predicting fluxes channel domain. comparisons among velocity profiles estimated formulations highlight only slight variations, especially proximity perturbated areas cavity.