Simulation for the convective descent phase of dredged-sediment releases in the seawater by a two-fluid model

Duc Hau Nguyen (1) , Sylvain Guillou (1) , Kim Dan Nguyen (2) , Damien Pham van Bang (3) , Julien Chauchat (4)

1 LUSAC - Laboratoire Universitaire des Sciences Appliquées de Cherbourg
2 M2C - Morphodynamique Continentale et Côtière
3 LHSV - Laboratoire d'Hydraulique Saint-Venant / Saint-Venant Laboratory for Hydraulics
4 LEGI - Laboratoire des Écoulements Géophysiques et Industriels [Grenoble]

The harbour structures are often located in shallow areas, especially in estuaries. It is then necessary to perform dredging to allow ships accessing to the docks. The dredged sediment is released over a predefined deposit zone. During the release, the sediment cloud, of which the concentration can be initially more than 350g/l, contains a lot of contaminants and then will impact to the environment. The purpose of this work is to numerically study the process of dredged sediment with the help of a twophase model [4]. The simulations are performed in the configuration of the experiments of Villaret et al. [6].

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

Duc Hau Nguyen, Sylvain Guillou, Kim Dan Nguyen, Damien Pham van Bang, Julien Chauchat. Simulation for the convective descent phase of dredged-sediment releases in the seawater by a two-fluid model. THESIS 2011, Apr 2011, Paris, France. pp.1-4. ⟨hal-00621135⟩