Numerical simulation for predicting the respose of an offshore heavy lift barge in regular and irregular waves

  • Adham Bekhit “Dunarea de Jos” University of Galati
  • Săndița Pacuraru “Dunarea de Jos” University of Galati
Keywords: Seakeeping, 6 degrees of freedom, BEM, diffraction/radiation.

Abstract

This study case concerns the prediction of the hydrodynamic response of an offshore heavy lift barge in the regular and irregular waves. The study focuses on predicting the six degrees of freedom responses for the barge in the operation condition when the ship speed is equal to zero, at various heading angles (0~180˚) and for several wave frequencies (0.02~2.0 rad/s). The numerical simulation is carried out using the 3D diffraction /radiation motion solver Hydrostar software that is based on potential theory to predict the wave-body interactions. All the hydrostatics, loading and sailing aspects are initially estimated, and then introduced as an input in the simulation process corresponding to the ship speed and heading directions. For the irregular sea simulations, the ITTC spectrum is used to describe the wave for a generic study case in the Black Sea to make the study feasible for offshore applications in operational conditions where the ship speed is equal to zero.

References

[1]. Pacuraru, F., Pacuraru, S., Bekhit, A., (2020). Numerical analysis of ship motions for an offshore vessel, AIP Conf. Proc. 2293, 420091, 1–4.
[2]. Pacuraru, S., Domnisoru, L. Bekhit, A. (2022). Numerical simulation for the motion response of an Offshore AHTS ship in regular and irregular waves, International Journal of Modern Manufacturing Technologies, ISSN 2067–3604, Vol. XIV, No. 3 / 2022.
[3]. Guevel, P., Bougis, J., (1982), Ship-motions with forward speed in infinite depth, Int. Shipbuilding Progress, 29(332), 103-117.Dan Obreja, 2004, "Hydrodynamic Peculiarities of Small Ship Design”.
[4]. Hossein Mousavizedegan S., " Dynamics of Marine vehicles. Faculty of Marine Technology. Amirkabir University of Technology, No. 424, Hafez Ave., Tehran, Iran, available online: https://faculty.kmsu.ac.ir/file/download/course/1582099786-waves.pdf. Last accessed on: 21.11.2023
[5]. Queutey P, Visonneau M, 2007 An interface capturing method for free-surface hydrodynamic flows Computers & Fluids;
Published
2023-12-04
How to Cite
1.
Bekhit A, Pacuraru S. Numerical simulation for predicting the respose of an offshore heavy lift barge in regular and irregular waves. Annals of ”Dunarea de Jos” University of Galati. Fascicle XI Shipbuilding [Internet]. 4Dec.2023 [cited 23Jul.2024];46:189-96. Available from: https://www.gup.ugal.ro/ugaljournals/index.php/fanship/article/view/6313
Section
Articles

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