Experimental analysis of extreme wave loads on a containership

Shinwoong Kim (1) , Guillaume de Hauteclocque (2) , Benjamin Bouscasse (1) , Marine Lasbleis (2) , Guillaume Ducrozet (1)

1 LHEEA - Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique
2 Bureau Veritas Marine & Offshore

Model-scale experiments were conducted to investigate the non-linearities associated with the Vertical Bending Moment (VBM) of a rigid container vessel in irregular waves. Long-duration runs (≃ 25 hours of data in full scale) were performed to allow the calculation of statistically meaningful extreme values of hogging and sagging on five different sea-states (from Hs = 6m up to Hs = 17 m). The model tests are presented in detail, and sampling errors are estimated. It is found that the ratio between linear and non-linear VBM (the so-called non-linear factor) can be modeled as a function of the linear value only. For a given linear value, the non-linear correction is the same, whatever the sea state. This observation, new in the fully non-linear case, is very valuable as it opens the door to efficient design assessment methodologies such as increased design sea state or design waves.

Domains: Oceanography; Fluids mechanics [physics.class-ph]

Shinwoong Kim, Guillaume de Hauteclocque, Benjamin Bouscasse, Marine Lasbleis, Guillaume Ducrozet. Experimental analysis of extreme wave loads on a containership. Ocean Engineering, 2024, 306, pp.118031. ⟨10.1016/j.oceaneng.2024.118031⟩. ⟨hal-04568573⟩