Abstract



Currently, the interaction between free surface flow and an elastic structure is simulated with monolithic codes which calculate the deformation of the structure and the liquid¿gas flow simultaneously. In this work, this interaction is calculated in a partitioned way with a separate flow solver and a separate structural solver using the interface quasiNewton algorithm with approximation for the inverse of the Jacobian from a leastsquares model (IQNILS). The interaction between an elastic beam and a sloshing liquid in a rolling tank is calculated and the results agree well with experimental data. Subsequently, the impact of both a rigid cylinder and a flexible composite cylinder on a water surface is simulated to assess the effect of slamming on the components of certain waveenergy converters. The impact pressure on the bottom of the rigid cylinder is nearly twice as high as on the flexible cylinder, which emphasizes the need for fluid¿structure interaction calculations in the design process of these waveenergy converters. For both the rolling tank simulations and the impact simulations, grid refinement is performed and the IQNILS algorithm requires the same number of iterations on each grid. The simulations on the coarse grid are also executed using GaussSeidel coupling iterations with Aitken relaxation which requires significantly more coupling iterations per time step.  
International

Si 
JCR

Si 
Title

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING 
ISBN

00457825 
Impact factor JCR

1,806 
Impact info


Volume




Journal number


From page

2085 
To page

2098 
Month

ENERO 
Ranking
