eCite Digital Repository

Fluid–structure interaction simulation of slam-induced bending in large high-speed wave-piercing catamarans

Citation

McVicar, J and Lavroff, J and Davis, MR and Thomas, G, Fluid-structure interaction simulation of slam-induced bending in large high-speed wave-piercing catamarans, Journal of Fluids and Structures pp. 35-58. ISSN 0889-9746 (2018) [Refereed Article]


Preview
PDF (Fluid structure simulation of slam induced bending on high-speed catamarans)
Pending copyright assessment - Request a copy
5Mb
  

Official URL: https://www.sciencedirect.com/science/article/pii/...

DOI: doi:10.1016/j.jfluidstructs.2018.06.009

Abstract

A ship in waves may experience a water impact event known as a slam. In this paper, slam-induced bending of wave-piercing catamarans in head seas is predicted by way of fluid–structure interaction simulations. The flow field during slamming of a wave-piercing catamaran is highly non-linear and cannot be accurately captured using potential flow methods as a result of the interactions between the flow fields produced by water entry of the separate demihulls and centre bow. Thus, the Reynolds-Averaged Navier–Stokes (RANS) equations are solved for rigid body motion of a vessel at model-scale. Verification and validation is conducted using model-scale data from a Hydroelastic Segmented Model (HSM). One-way and two-way interactions are computed considering vibration of the hull girder. In the case of one-way interactions, the computed fluid loads affect the structure, but the structural response does not affect the fluid domain solution whereas for the two-way interactions the structural response affects the fluid solution. A new method for capturing the non-linear time variation in added mass is developed and deemed necessary when computing one-way interactions, primarily as a result of the large changes in forward wetted area present for a wave-piercing catamaran. It is shown that two-way interaction simulation is not needed for predicting the slam induced hull girder loads. One-way interaction simulation can therefore be used allowing reduced computational effort.

Item Details

Item Type:Refereed Article
Keywords:Slamming, bending, CFD, fluid structure interaction, model tests, computer simulation
Research Division:Engineering
Research Group:Mechanical Engineering
Research Field:Mechanical Engineering not elsewhere classified
Objective Division:Transport
Objective Group:Water Transport
Objective Field:Passenger Water Transport
Author:Lavroff, J (Dr Jason Lavroff)
Author:Davis, MR (Professor Michael Davis)
Author:Thomas, G (Professor Giles Thomas)
ID Code:127054
Year Published:2018
Web of Science® Times Cited:1
Deposited By:Engineering
Deposited On:2018-07-09
Last Modified:2018-07-09
Downloads:0

Repository Staff Only: item control page