Numerical simulation of the water entry of rigid and elastic structures with hydroelastic coupling

Dongni Yan*, Puramharikrishnan Lakshmynarayanana, Tommi Mikkola, Pentti Kujala, Spyros Hirdaris

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

In rough seas, ships may be subject to wave-induced slamming loads caused by high vertical velocities and accelerations imposed by incident waves in way of water entry. Suitable modelling of fluid and structural mechanics, and their dynamic interactions may help with the evaluation of local slamming loads for use in design. This paper presents the use of a partitioned FSI method combining CFD and dynamic FEA via a two - way coupling scheme with the aim to study the influence of water impact on flat plate and wedge structures entering the water. The approach employs a volume of fluid (VOF) method to track the shape and position of the air-water interface. An implicit unsteady solver is utilized to solve the governing equations based on Finite Volume Method (FVM) and nonlinear transient dynamic responses are implemented by FEA. Computational results are assessed and compared against available experimental data. It is concluded that even when the speed of the body motion is moderate, the contact boundary between the water and structure expand at high speed in way of water entry. Slamming loads may vary depending on the magnitude of impact pressure, the angle of impingement on water and the flexibility of the structure.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Ships and Offshore Structures ICSOS 2021
Number of pages12
Publication statusPublished - 6 Sept 2021
MoE publication typeNot Eligible
EventInternational Conference on Ships and Offshore Structures
- Hamburg, Germany
Duration: 6 Sept 20208 Sept 2021
https://www.icsos.info/past-conferencese289df64

Conference

ConferenceInternational Conference on Ships and Offshore Structures
Abbreviated titleICSOS
Country/TerritoryGermany
CityHamburg
Period06/09/202008/09/2021
Internet address

Keywords

  • Sea Loads
  • Slamming
  • Hydroelasticity
  • Fluid–structure–interactions (FSI)
  • CFD
  • FEA

Field of art

  • Design

Fingerprint

Dive into the research topics of 'Numerical simulation of the water entry of rigid and elastic structures with hydroelastic coupling'. Together they form a unique fingerprint.

Cite this