| Titre : | Three-phase bi-layer model for simulating mixed flows (2012) |
| Auteurs : | François Kerger, Auteur ; Pierre Archambeau, Auteur ; Benjamin J. Dewals, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Journal of hydraulic research (Vol. 50 N° 3, Mai/Juin 2012) |
| Article en page(s) : | pp. 312-319 |
| Note générale : | Hydraulique |
| Langues : | Anglais |
| Tags : | Air entrapment entrainment Air–water flow Drift-flux model Multiphase |
| Résumé : | Mixed flows characterized by a simultaneous occurrence of free surface and pressurized flows are often encountered in hydraulic engineering. Numerous researches have been dedicated to unify the mathematical description of both flows. Herein, shock-capturing models succeed in giving a unique set of equations. However, no method accounts for both air-entrapment and air-entrainment. This study proposes an original model to simulate air–water interactions in mixed flows. The new approach relies on the area-integration of a three-phase model over two layers. The applicability of this free surface model is extended to pressurized flows by a modified pressure term accounting for the dispersed air. The derived modelling system WOLF IMPack is then validated. The code successfully simulates open channel flows, mixed flows and water hammer in a unified framework, including air–water interactions, in structures like the drainage network. |
| ISSN : | 0022-1686 |
| En ligne : | http://www.tandfonline.com/doi/full/10.1080/00221686.2012.684454 |
