Flow Structure Downstream of a Confined Buoyant Round Jet in Cross Flow with Relevance to Tunnel Fires

Abstract : The flow structure downstream of a confined buoyant round jet in cross flow discharging into a channel is investigated. Experimental visualizations in the rectangular channel cross-section revealed that the interface between the upper layer of light gas and the lower clean air layer is distorted, appearing in the form of ‘hollows' and ‘bulges'. Numerical simulations show that these flow features are due to vorticity transfers from the upper to the lower part of the channel. Applied to the tunnel fire issue, this study contributes to the understanding of the impact of a longitudinal ventilation on a fire plume in a tunnel that can affect the smoke natural stratification.
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-00406202
Contributeur : Ghislain Michaux <>
Soumis le : mardi 21 juillet 2009 - 16:27:46
Dernière modification le : jeudi 7 février 2019 - 14:34:36

Lien texte intégral

Identifiants

Collections

Citation

Ghislain Michaux, Olivier Vauquelin. Flow Structure Downstream of a Confined Buoyant Round Jet in Cross Flow with Relevance to Tunnel Fires. Journal of Fire Sciences, SAGE Publications, 2009, 27, pp.265-284. 〈10.1177/0734904108099382〉. 〈hal-00406202〉

Partager

Métriques

Consultations de la notice

52