Design and construction of a buildings natural ventilation control system based in a dinamic cell

Abstract

This work presents the Natural Ventilation Cell (NVC) as an innovative system for integration into building envelopes, designed to regulate air flow. The cell’s design is based on aerodynamic principles and incorporates an automated system that allows its geometry to adapt to variable wind conditions, stabilizing air flow velocity and thereby achieving controlled natural ventilation. The study methodology combines experimental tests in a low-speed wind tunnel, using laser visualization and anemometry techniques, with Computational Fluid Dynamics (CFD) simulations in OpenFOAM. The results show that the NVC attenuates the influence of outdoor wind variability, achieving increases of up to 75% in outlet flow velocity compared to ambient conditions. NVC is proposed as an adaptable component of architectural envelopes, aimed at the design of passive natural ventilation strategies in various architectural typologies.