This study deals with the mixed convection flow through a shallow horizontal vent linking two compartments (one over the other). Depending on the temperature difference of gas as well as the ventilation flow rate between the two compartments, the flow through the vent can be bi- or uni-directional. A literature survey highlights that three correlations are used in safety engineering to calculate these upward and downward mixed convection flow rates. Unfortunately, for the same conditions, these correlations give very different results and, to date, there is no common agreement in the scientific community to identify quantitatively the most accurate model. This study proposes a new assessment of these correlations based on new experimental data obtained from the laboratory facility as well from the industrial apparatus. In addition, an improvement of the best model is proposed which better reproduced the experimental results.
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Improvement of Correlative Approaches for Mixed Convective Flow Through a Horizontal Vent
Kevin Varrall,
Kevin Varrall
Laboratoire de Recherche Commun ETiC,
Institut de Radioprotection et de Sûreté
Nucléaire (PSN-RES/SA2I),
Centre de Cadarache,
St Paul Lez Durance 13115, France
Institut de Radioprotection et de Sûreté
Nucléaire (PSN-RES/SA2I),
Centre de Cadarache,
St Paul Lez Durance 13115, France
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Hugues Pretrel,
Hugues Pretrel
Laboratoire de Recherche Commun ETiC,
Institut de Radioprotection et de Sûreté
Nucléaire (PSN-RES/SA2I),
Centre de Cadarache,
St Paul Lez Durance 13115, France
e-mail: hugues.pretrel@irsn.fr
Institut de Radioprotection et de Sûreté
Nucléaire (PSN-RES/SA2I),
Centre de Cadarache,
St Paul Lez Durance 13115, France
e-mail: hugues.pretrel@irsn.fr
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Samuel Vaux,
Samuel Vaux
Laboratoire de Recherche Commun ETiC,
Institut de Radioprotection et de Sûreté
Nucléaire (PSN-RES/SA2I),
Centre de Cadarache,
St Paul Lez Durance 13115, France
Institut de Radioprotection et de Sûreté
Nucléaire (PSN-RES/SA2I),
Centre de Cadarache,
St Paul Lez Durance 13115, France
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Olivier Vauquelin
Olivier Vauquelin
Laboratoire IUSTI,
Aix Marseille Université,
UMR 7343, 5 Rue Enrico Fermi,
Marseille Cedex 13453, France
Aix Marseille Université,
UMR 7343, 5 Rue Enrico Fermi,
Marseille Cedex 13453, France
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Kevin Varrall
Laboratoire de Recherche Commun ETiC,
Institut de Radioprotection et de Sûreté
Nucléaire (PSN-RES/SA2I),
Centre de Cadarache,
St Paul Lez Durance 13115, France
Institut de Radioprotection et de Sûreté
Nucléaire (PSN-RES/SA2I),
Centre de Cadarache,
St Paul Lez Durance 13115, France
Hugues Pretrel
Laboratoire de Recherche Commun ETiC,
Institut de Radioprotection et de Sûreté
Nucléaire (PSN-RES/SA2I),
Centre de Cadarache,
St Paul Lez Durance 13115, France
e-mail: hugues.pretrel@irsn.fr
Institut de Radioprotection et de Sûreté
Nucléaire (PSN-RES/SA2I),
Centre de Cadarache,
St Paul Lez Durance 13115, France
e-mail: hugues.pretrel@irsn.fr
Samuel Vaux
Laboratoire de Recherche Commun ETiC,
Institut de Radioprotection et de Sûreté
Nucléaire (PSN-RES/SA2I),
Centre de Cadarache,
St Paul Lez Durance 13115, France
Institut de Radioprotection et de Sûreté
Nucléaire (PSN-RES/SA2I),
Centre de Cadarache,
St Paul Lez Durance 13115, France
Olivier Vauquelin
Laboratoire IUSTI,
Aix Marseille Université,
UMR 7343, 5 Rue Enrico Fermi,
Marseille Cedex 13453, France
Aix Marseille Université,
UMR 7343, 5 Rue Enrico Fermi,
Marseille Cedex 13453, France
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received February 16, 2018; final manuscript received December 3, 2018; published online January 25, 2019. Assoc. Editor: Antonio Barletta.
J. Heat Transfer. Mar 2019, 141(3): 034501 (5 pages)
Published Online: January 25, 2019
Article history
Received:
February 16, 2018
Revised:
December 3, 2018
Citation
Varrall, K., Pretrel, H., Vaux, S., and Vauquelin, O. (January 25, 2019). "Improvement of Correlative Approaches for Mixed Convective Flow Through a Horizontal Vent." ASME. J. Heat Transfer. March 2019; 141(3): 034501. https://doi.org/10.1115/1.4042330
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