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Validation of a fast fluid dynamics program for simulating natural ventilation in buildings.

Numéro : 776

Auteurs : JIN M., CHEN Q. Y., ZUO W.

Résumé

Natural ventilation is a sustainable building technology that can provide good indoor environment and save energy. The application of natural ventilation in buildings requires a careful design in the early design phase, and simple, fast design tools are highly needed. As an intermediate approach between computational fluid dynamics (CFD) and multi-zone model, fast fluid dynamics (FFD) can provide informative airflow information with a speed of 15 times faster than the laminar CFD so that it could be a potential design tool for natural ventilation. This study thus evaluated the performance of FFD for simulating natural ventilation. The FFD was validated with three cases representing natural ventilation with different driven forces: (1) wind-driven natural ventilation through a scaled building model; (2) wind-driven natural ventilation under different wind direction through a full scale building with partitions; (3) buoyancy-driven single-sided natural ventilation in an environmental chamber with a large opening. From comparing the results predicted by FFD and the experimental data, this study found that the FFD was capable of predicting main air flow feature and ventilation rate with reasonable accuracy for the wind-driven or buoyancy-driven natural ventilation in buildings. .

Documents disponibles

Format PDF

Pages : 11 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Validation of a fast fluid dynamics program for simulating natural ventilation in buildings.
  • Identifiant de la fiche : 30009846
  • Langues : Anglais
  • Sujet : Environnement
  • Source : Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
  • Date d'édition : 16/06/2013

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