Using CFD to Evaluate Natural Ventilation through a 3D Parametric Modeling Approach

Predicting building air change rates is a challenge for designers seeking to deal with natural ventilation, more and popular passive strategy. Among the methods available this task, computational fluid dynamics (CFD) appears most compelling, in ascending use. However, CFD simulations require range of settings skills that inhibit its wide application. With primary goal providing pragmatic application promote wind-driven ventilation assessments at design phase, paper presents study investigates integrating 3D parametric modeling CFD. From pre- post-processing, workflow addresses all simulation steps: geometry weather definition, including incident wind directions, model set up, control, results’ edition, visualization. Both indoor velocities (ACH) were calculated within procedure, which used test house measurements as reference. The explores alternatives platform’s frame display compute ACH parametrically generate surfaces where are computed. also discusses effectiveness reference building’s by analyzing outputs. proposed approach assists practical use designers, detailed information about numerical model, well enabling means cases, visualize, post-process results.