Abstract
Over the past two decades high-speed vessels have extended their service areas from protected waters to the open ocean where frequent and large water impacts can result in structural damage. The accurate prediction of slamming loads, and their consequences on light-weight high-speed vessels, is an essential element of efficient structural design. The aim of this work is to understand and accurately predict the behavior and local slam loads of quasi-2D wedge shaped hull forms impacting water. The computed results, using finite-volume Computational Fluid Dynamics (CFD), are validated against drop test experimental data and compared to a previously published numerical simulation using Smoothed Particle Hydrodynamics (SPH). The CFD results show good agreement with the experimental measurements.
Highlights
A major challenge in designing advanced marine vehicles is to achieve efficient structural design
It was found that the computed pressures are very susceptible to the location of the pressure sensors and a sensitivity study for the location of the pressure sensors was carried out in which a sensor’s centre location was varied to ±1.9 mm of the given location during experiments. This emphasised the importance of validating the numerical results with high quality experimental data, as if there is a slight deviation in the position of the transducer, the error could be duplicated, as shown in Figures 9 and 10
This paper presented results of a comparative study for drop tests on symmetrical wedges
Summary
A major challenge in designing advanced marine vehicles is to achieve efficient structural design This can only be accomplished through the accurate prediction of a vessel’s motion response and the resulting sea loads [1]. A slam may cause severe damage, as reported by Sun [4], due to significant local loads, and can excite the natural modes of the structure, called whipping [5]. This can have a significant influence on reducing the fatigue life of a vessel as discussed by Thomas et al [5,6].
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