Numerical simulation of the water-sediment mixed flow in a periodic channel by a two-phase model

J. Chauchat (1) , S. Guillou (2) , K.D. Nguyen (1)

1 M2C - Morphodynamique Continentale et Côtière
2 LUSAC - Laboratoire Universitaire des Sciences Appliquées de Cherbourg

The two-phase approach (fluid-solid) is an interesting one in modelling sediment transport process. This paper presents the application of such a model for simulating watersediment mixed flows in a periodic open channel, for which some experimental data are available. Particularly, the results obtained by the model show the importance of turbulence in the transport process. Thus, a drift velocity, which is due to the correlation between the instantaneous particle distribution and the fluid velocity fluctuations, is introduced. This is necessary to improve the numerical results.

Domaines: Mécanique des fluides [physics.class-ph]; Mécanique des fluides [physics.class-ph]; Ingénierie de l'environnement

J. Chauchat, S. Guillou, K.D. Nguyen. Numerical simulation of the water-sediment mixed flow in a periodic channel by a two-phase model. Flow simulation in hydraulic engineering / Dresdner Wasserbaukolloquium, Mar 2006, Dresden, Germany. pp.229-236. ⟨hal-00621159⟩