Wind and buoyancy driven natural ventilation in double skin façades
| Autor: | Diego Angeli, Alessandro Dama |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Work (thermodynamics)
Buoyancy double skin façade 020209 energy Maximum deviation 02 engineering and technology Computational fluid dynamics engineering.material Building simulation CFD model assessment natural ventilation wind pressure coefficients Control and Systems Engineering Civil and Structural Engineering Building and Construction Electrical and Electronic Engineering 0202 electrical engineering electronic engineering information engineering Sensitivity (control systems) business.industry Natural ventilation Structural engineering engineering business Communication channel |
| Popis: | The computational fluid dynamics (CFD) modelling activity presented in this work aims at investigating the reliability of the assumptions employed in a double skin facades (DSFs) simplified model, developed for the integration of naturally ventilated DSFs in building simulation (BS) tools. The simplified fluid-dynamic model considers both the wind action, by means of pressure coefficients (Cp) on the openings, and the buoyancy inside the ventilated channel. Both the BS and the CFD models have been assessed using the database of an experimental campaign carried out in a full scale test facility, named ‘The Cube’, and made available by the Department of Civil Engineering of Aalborg University. The results show a good agreement between the CFD and BS models in terms of predicted temperature increase, with a maximum deviation of 15%. Both models exhibit a high sensitivity to the imposed differential wind pressure, which depends on the Cp source employed. The determination of proper Cp values for the s... |
| Databáze: | OpenAIRE |
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