McVicar, J;
Lavroff, J;
Davis, MR;
Thomas, GA;
(2018)
Fluid-structure interaction simulation of slam-induced bending in large high-speed wave-piercing catamarans.
Journal of Fluids and Structures
, 82
pp. 35-58.
10.1016/j.jfluidstructs.2018.06.009.
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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.
| Type: | Article |
|---|---|
| Title: | Fluid-structure interaction simulation of slam-induced bending in large high-speed wave-piercing catamarans |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.jfluidstructs.2018.06.009 |
| Publisher version: | https://doi.org/10.1016/j.jfluidstructs.2018.06.00... |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Slamming, Whipping, Fluid–structure interaction, Hydroelasticity, Catamaran, Wave-piercing |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10051680 |
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