Probability and distribution of green water events and pressures

Boon, A.D.; Wellens, Peter

doi:10.1016/j.oceaneng.2022.112429

Cited by 6 publications

(2 citation statements)

References 24 publications

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“…The solver has been validated to properly model violent free-surface flows such as wave interaction with breakwaters [28], sloshing [3,27], wave run-up [17,29], green water impacts [2]. This makes it suitable for estimating breakwater induced wave energy dissipation by wave breaking, wave run up and overtopping, return flow and the disturbance of the wave orbital path.…”

Section: Methodsmentioning

confidence: 99%

Force and water jet impact reduction on adjacent structures by means of free surface breakwaters

Holkema,

Aalbers,

Wellens

2023

ISP

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In head waves, water jet impacts due to run up can occur as a result of the structural configuration of some floating structures, reducing workability. Wave attenuation near the floater may reduce the risk of water jet impacts. This paper presents a numerical study of the performance and attenuation mechanisms of various plate type fixed free surface breakwaters and their ability to prevent water jet impacts on adjacent structures. Simulations are performed in two dimensions with a numerical method based on the Navier–Stokes equations in the presence of a free surface. The breakwater models are evaluated in two irregular sea states in terms of wave transmission, reflection and energy dissipation and by their ability to reduce water jets impacts on adjacent structures. A 60 degree inclined plate is found to induce a large wave energy reduction, little wave transmission and reflection and to experience little wave loading while effectively reducing water jet impacts.

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Section: Methodsmentioning

confidence: 99%

Force and water jet impact reduction on adjacent structures by means of free surface breakwaters

Holkema,

Aalbers,

Wellens

2023

ISP

Self Cite

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“…[25,26]. Reference [27] discusses the statistics of green water occurrence on a simplified ship, and provides an overview of earlier statistical studies.…”

Section: Introductionmentioning

confidence: 99%

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

Essen

Seyffert

2023

Journal of Offshore Mechanics and Arctic Engineering

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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 modelling (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.

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Experimental validation of the plunger-type flow model for irregular waves

Lowell

Irani

2023

Ocean Engineering

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Probability and distribution of green water events and pressures

Cited by 6 publications

References 24 publications

Force and water jet impact reduction on adjacent structures by means of free surface breakwaters

Force and water jet impact reduction on adjacent structures by means of free surface breakwaters

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

Experimental validation of the plunger-type flow model for irregular waves

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