Effect of roof impacts on coupling between wave response and shloshing in tanks of LNG-carriers

Bernard Molin (1, 2) , Fabien Remy (1, 2) , A. Ledoux , N. Ruiz

1 IRPHE - Institut de Recherche sur les Phénomènes Hors Equilibre
2 ECM - École Centrale de Marseille

An experimental campaign is reported on the wave response of a rectangular barge supporting two rectangular tanks partly filled with water. Flat and chamfered tank roofs are successively tested, at varying heights above the free surfaces inside the tanks. The tests are carried out in irregular wave systems coming from abeam. The measured barge roll and sloshing motions in the tanks are compared with numerical results from a linearized potential flow model. Good agreement is reported in mild seastates. Nonlinear effects, associated with large amplitude sloshing motion and/or roof impacts, are investigated.

Mots clés: sloshing; wave impact; LNG

Domaines: Mécanique des fluides [physics.class-ph]; Mécanique des fluides [physics.class-ph]

Bernard Molin, Fabien Remy, A. Ledoux, N. Ruiz. Effect of roof impacts on coupling between wave response and shloshing in tanks of LNG-carriers. 27th International Conference on OFFSHORE MECHANICS AND ARCTIC ENGINEERING, Jun 2008, Estoril, Portugal. ⟨10.1115/OMAE2008-57039⟩. ⟨hal-00454547⟩