Volume 1: Offshore Technology 2017
DOI: 10.1115/omae2017-61473
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Wave Impact Experiment of a GBS Model in Large Waves

Abstract: For the design of offshore structures in harsh wave environments, model testing continues to be the recommended industry practice for determining wave impact forces on offshore structures. Accurate measurements of wave impacts in model tests have been a challenge for several decades. Transducers are required to accurately capture the short duration, high magnitude, and dynamic nature of impact loads. The structural model, transducers, and the transducer mountings need to be designed such that mechanical vibrat… Show more

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Cited by 4 publications
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“…The OC6 Phase Ib campaign incorporated load measurements for each of the column/heave plate components of the semisubmersible seen in Figure 2, as well as pressure measurements on the heave plate and near the still waterline, where it is expected that the nonlinear hydrodynamic loading is the highest. Prior examples of pressure measurement in a wave basin with a surfacepiercing structure often focus on water impact problems during extreme wave events (see, e.g., [18][19][20][21][22]). In contrast, measurement of pressure on structures in nonbreaking and moderate waves is less common.…”
Section: Introductionmentioning
confidence: 99%
“…The OC6 Phase Ib campaign incorporated load measurements for each of the column/heave plate components of the semisubmersible seen in Figure 2, as well as pressure measurements on the heave plate and near the still waterline, where it is expected that the nonlinear hydrodynamic loading is the highest. Prior examples of pressure measurement in a wave basin with a surfacepiercing structure often focus on water impact problems during extreme wave events (see, e.g., [18][19][20][21][22]). In contrast, measurement of pressure on structures in nonbreaking and moderate waves is less common.…”
Section: Introductionmentioning
confidence: 99%
“…Given the rare occurrence of the critical wave impact phenomena, both approaches-experimental and numerical-can be quite time-consuming for a proper statistical robustness to be obtained. Thereby, many recent model test campaigns do include multiple 3-h realisations (seed numbers), with typically up to 20 seeds, and sometimes even more (see, e.g., [18,19]). However, e.g., in the case of wave slamming on columns, it is found in [18] that even with almost 100 realisations there is a statistical uncertainty to be taken into account, at least when using the frequently applied contour method reflected in Figure 1.…”
Section: Introductionmentioning
confidence: 99%
“…However, because neither of these approaches is exact, the resulting pressure and load estimates must be associated with a considerable degree of uncertainty which introduces considerable risk to the design process (Huang et al, 2017).…”
Section: Introductionmentioning
confidence: 99%