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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, 82 pp. 35-58. ISSN 0889-9746 (2018) [Refereed Article]
Copyright Statement
Copyright 2018 Elsevier Ltd.
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 |
| UTAS Author: | Lavroff, J (Dr Jason Lavroff) |
| UTAS Author: | Davis, MR (Professor Michael Davis) |
| UTAS Author: | Thomas, G (Professor Giles Thomas) |
| ID Code: | 127054 |
| Year Published: | 2018 |
| Web of Science® Times Cited: | 3 |
| Deposited By: | Engineering |
| Deposited On: | 2018-07-09 |
| Last Modified: | 2018-11-01 |
| Downloads: | 0 |
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