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Technical Brief

Improvement of correlative approaches for mixed convective flow through a horizontal vent

[+] Author and Article Information
Kevin Varrall

Institut de Radioprotection et de Sûreté Nucléaire (PSN-RES/SA2I), Laboratoire de recherche commun ETiC, Centre de Cadarache, 13115 St Paul Lez Durance, France
kevin.varrall@hotmail.fr

Hugues Pretrel

Institut de Radioprotection et de Sûreté Nucléaire (PSN-RES/SA2I), Laboratoire de recherche commun ETiC, Centre de Cadarache, 13115 St Paul Lez Durance, France
hugues.pretrel@irsn.fr

Samuel Vaux

Institut de Radioprotection et de Sûreté Nucléaire (PSN-RES/SA2I), Laboratoire de recherche commun ETiC, Centre de Cadarache, 13115 St Paul Lez Durance, France
samuel.vaux@irsn.fr

Olivier Vauquelin

Aix Marseille Université, Laboratoire IUSTI, UMR 7343, 5 Rue Enrico Fermi, 13453 Marseille Cedex 13, France
olivier.vauquelin@univ-amu.fr

1Corresponding author.

ASME doi:10.1115/1.4042330 History: Received February 16, 2018; Revised December 03, 2018

Abstract

This study deals with the mixed convection flow through a 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. The study proposes a new assessment of these correlations based on new experimental data obtained from laboratory facility as well from industrial apparatus. In addition, an improvement of the best model is proposed which better reproduced the experimental results.

Copyright (c) 2018 by ASME
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