Finding Dangerous Waves-Review of Methods to Obtain Wave Impact Design Loads for Marine Structures

van Essen, S.M.; Seyffert, Harleigh C.

doi:10.1115/1.4056888

Finding Dangerous Waves-Review of Methods to Obtain Wave Impact Design Loads for Marine Structures

Title

Finding Dangerous Waves-Review of Methods to Obtain Wave Impact Design Loads for Marine Structures

Author

van Essen, S.M. (TU Delft Ship Hydromechanics and Structures; Maritime Research Institute Netherlands (MARIN))
Seyffert, Harleigh C. (TU Delft Ship Hydromechanics)

Date

2023

Abstract

Green water and slamming wave impacts can lead to severe damage or operability issues for marine structures. It is therefore essential to consider their probability and loads in design. This is difficult, as impacts are both hydrodynamically complex and relatively rare. The complexity requires high-fidelity modeling (experiments or CFD), whereas a statistically sound analysis of rare events requires long durations. High-fidelity tools are too demanding to run a Monte-Carlo simulation; low-fidelity tools do not include sufficient physical details. The use of extreme value theory and/or multi-fidelity modeling is therefore required. The present paper reviews the state-of-the-art methods to find wave impact design loads, which include response-conditioning methods, screening methods, and adaptive sampling methods. Their benefits and shortcomings are discussed, as well as challenges for the wave impact problem. One challenge is the role of wave non-linearity. Another is the validation of the different methods; it is hard to obtain long-duration high-fidelity wave impact data.

Subject

computational mechanics and design
design of offshore structures
dynamics of structures
fluid-structure interaction
hydrodynamics
ocean waves and associated statistics
offshore safety and reliability
probabilistic model of forces and motions
probability and spectral wave modeling
reliability based codes and guidelines
wave effects
wave mechanics