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Prediction of airflow patterns in a ventilated enclosure with zonal methods

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  • Daoud, Ahmed
  • Galanis, Nicolas

Abstract

A zonal model with two different approaches for expressing mass flow rates (the conventional method based on relations for flow in conduits and the shear stress QSNA-Newton's approximation) is used to predict airflow patterns in a ventilated isothermal enclosure. A new proposed 3D wall jet model gives much better agreement with experimental results than the previously available 2D wall jet model. The outlet boundary condition ( or Pout = Patm) has no influence on the mass flow rates. However, the pressure condition should be chosen when there is more than one outlet. Based on the calculated results, it is recommended that the shear stress approximation should be privileged over the conventional method since the latter predicts completely unrealistic average cell pressures with both outlet boundary conditions.

Suggested Citation

  • Daoud, Ahmed & Galanis, Nicolas, 2008. "Prediction of airflow patterns in a ventilated enclosure with zonal methods," Applied Energy, Elsevier, vol. 85(6), pages 439-448, June.
    • Handle: RePEc:eee:appene:v:85:y:2008:i:6:p:439-448
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    Cited by:

    1. Lu, Yanyu & Dong, Jiankai & Liu, Jing, 2020. "Zonal modelling for thermal and energy performance of large space buildings: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 133(C).
    2. Mehdi Taebnia & Sander Toomla & Lauri Leppä & Jarek Kurnitski, 2019. "Air Distribution and Air Handling Unit Configuration Effects on Energy Performance in an Air-Heated Ice Rink Arena," Energies, MDPI, vol. 12(4), pages 1-21, February.

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