BASE DE DADOS DE COEFICIENTES DE PRESSÃO PARA EDIFÍCIOS NO FORMATO H

Abstract

Due to the great importance that natural ventilation has on thermal comfort, current researches have sought to include natural ventilation analysis in their scope. For such, it is possible to resort to computational simulations which can be performed by many methods, such as Computational Fluid Dynamics (CFD) and Airflow Network (AFN). The first is more precise but involves a longer learning curve and requires a lot of time for modeling, configuration, simulation also data processing. AFN simulation, on the other hand, is usually coupled with Building Energy Simulation (BES) software, which simulates faster than CFD; it also has a shorter learning curve, especially for users who already run energy simulations and only seek to include the natural ventilation effects. Despite these benefits, AFN simulation demands previous knowledge on Pressure Coefficient (Cp) and its precision is essential for the validity of the final results. Although it is of great relevance, the currently available databases and analytical models of Cp are still incomplete, lacking data for various buildings configurations. Thus, it is intended to elaborate a Cp database for building in H shape due to its large occurrence in Brazil. In order to generate a database for a wide range of applications, CFD simulations will be performed with variable heights and proportion at floor plan. Therefore, it is expected to further the researchers access to natural ventilation simulations in BES software, reducing results uncertainties and encouraging the application of natural ventilation in new constructions.