Simulating waves and their interactions with a restrained ship using a non-hydrostatic wave-flow model

Simulating waves and their interactions with a restrained ship using a non-hydrostatic wave-flow model

Rijnsdorp, D.P. (TU Delft Environmental Fluid Mechanics)
Zijlema, M. (TU Delft Environmental Fluid Mechanics)

2016-08-01

This paper presents a numerical model to simulate the evolution of waves and their interactions with a restrained ship that is moored in coastal waters. The model aims to be applicable at the scale of a harbour or coastal region, while accounting for the key physical processes that determine the hydrodynamic loads on the ship. Its methodology is based on the non-hydrostatic wave-flow model SWASH, which provides an efficient tool to simulate the nonlinear dynamics that govern the nearshore wave field. In this work, we propose a new numerical algorithm that accounts for the presence of a non-moving floating body, to resolve the wave impact on a restrained ship. The model is validated through comparisons with an analytic solution, a numerical solution, and two laboratory campaigns. The results of the model-data comparison demonstrate that the model captures the scattering of waves by a restrained body. Furthermore, it gives a reasonable prediction of the hydrodynamic loads that act on a restrained container ship for a range of wave conditions. Importantly, the model captures these dynamics efficiently, which demonstrates that it retains this favourable property of the non-hydrostatic approach when a floating body is included. The findings of this study suggest that the model provides a promising new alternative to simulate the nonlinear evolution of waves and their impact on a restrained ship at the scale of a realistic harbour or coastal region.

Hydrodynamic loads
Moored ship
Non-hydrostatic
SWASH
Wave scattering
Wave-ship interactions

http://resolver.tudelft.nl/uuid:5953b9c8-4e43-4f08-938d-d641b09973a9

https://doi.org/10.1016/j.coastaleng.2016.04.018

2018-09-20

0378-3839

Coastal Engineering, 114, 119-136

Institutional Repository

journal article

© 2016 D.P. Rijnsdorp, M. Zijlema