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van der Eijk, M. (author), Wellens, P.R. (author)A new bilinear interface reconstruction algorithm (BLIC) is presented to capture highly-curved interfaces more accurately on structured grids without a significant increase in computational costs compared to the standard piecewise linear interface calculation (PLIC) methods. The new reconstruction algorithm uses the initial PLIC segment and...journal article 2024
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Fidalgo Domingos, D.A. (author), Wellens, P.R. (author), van Wingerden, J.W. (author)As a result of more stable wind conditions and the depletion of near-shore locations, wind farms are moving farther offshore into deeper waters, challenging the current limits of offshore heavy-lift operations. This paper presents and verifies a novel frequency-domain framework to perform extensive site-specific analysis, of floating...journal article 2024
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Chang, X. (author), Wellens, P.R. (author)The lack of suitable boundary conditions in practical surface wave simulations with maritime structures in current or at forward speed may cause energy in the computational domain to accumulate due to spurious wave reflection. The common way to prevent wave reflection is to use passive wave absorbers, such as damping zones or relaxation zones...journal article 2024
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Holkema, K. J. (author), Aalbers, C. (author), Wellens, P.R. (author)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...journal article 2023
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Wenink, Robert (author), van der Eijk, M. (author), Yorke-Smith, N. (author), Wellens, P.R. (author)Surrogate modelling techniques such as Kriging are a popular means for cheaply emulating the response of expensive Computational Fluid Dynamics (CFD) simulations. These surrogate models are often used for exploring a parameterised design space and identifying optimal designs. Multi-fidelity Kriging extends the methodology to incorporate data...journal article 2023
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van der Eijk, M. (author), Wellens, P.R. (author)The numerical prediction of two-phase flows with an interface is challenging, to a considerable extent because of the high density ratio at the interface. Numerical results become affected by momentum losses, diverging spurious interface velocities, free surface distortion, and even numerical instability. To prevent issues like these,...journal article 2023
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Xu, P. (author), Wellens, P.R. (author)The present research analyzes the nonlinear fluid–structure interaction (FSI) of free surface waves with large-scale polymer offshore floating photovoltaics (LPOFPV). The floating structure is modeled as a nonlinear Euler Bernoulli–von Kármán (EBVK) beam coupling with water beneath. The EBVK theory takes the in-plane force into consideration to...journal article 2022
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Boon, A.D. (author), Wellens, P.R. (author)This article proposes a method to quantify, first, the probability of occurrence of green water and, second, the expected maximum pressures during green water events using their statistical distribution for ships at forward speed. A large green water data set which represents 1945 hours of continuous sailing on full scale with different sea...journal article 2022
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Xu, P. (author), Wellens, P.R. (author)This paper concerns the fully nonlinear fluid–structure interaction (FSI) of Large-scale floating photovoltaics (LFPV) in waves. The Euler Bernoulli–von Kármán beam models the structure while potential flow represents the fluid. A set of coupled dynamical equations is established. The fully analytic solution is sought with the unified Stokes...journal article 2022
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Hengelmolen, Vera (author), Wellens, P.R. (author)The added resistance is a resistance component that is not yet satisfactorily predicted, although its accurate estimation is crucial-both from an environmental and economic point of view-from the design stage of a ship until its operation. One of the possible sources of overprediction is the occurrence of bow wave breaking. The first aim of...journal article 2022
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Tan, J. (author), Polinder, H. (author), Jarquin Laguna, A. (author), Wellens, P.R. (author), Miedema, S.A. (author)Currently, the techno-economic performance of Wave Energy Converters (WECs) is not competitive with other renewable technologies. Size optimization could make a difference. However, the impact of sizing on the techno-economic performance of WECs still remains unclear, especially when sizing of the buoy and Power Take-Off (PTO) are considered...journal article 2021
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Bos, R.W. (author), Wellens, P.R. (author)To study how an extreme wave load on a maritime structure causes structural deformation, an experiment is conducted to measure the response of a one degree-of-freedom pendulum in a focused, breaking wave. The tube that makes up the base of the pendulum covers almost the entire width of the tank so that three-dimensional effects can be...journal article 2021
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Xu, P. (author), Wellens, P.R. (author)Maritime structures in water always experience a mean hydrostatic pressure. This paper investigates the nonlinear vibration of a clamped circular thin plate subjected to a non-zero mean load. A set of coupled Helmholtz–Duffing equations is obtained by decomposing the static and dynamic deflections and employing a Galerkin procedure. The...journal article 2021
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Bos, R.W. (author), Wellens, P.R. (author)Maritime structures operating out at sea experience large changes in wetted area because of free surface waves. Although these conditions are typical for maritime applications, a fundamental experiment that includes a structure in the air–water interface undergoing transitions from dry to wet and back does not appear to exist. This paper aims...journal article 2021
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Wellens, P.R. (author), Borsboom, Mart (author)The boundaries of numerical domains for free-surface wave simulations with marine structures generate spurious wave reflection if no special measures are taken to prevent it. The common way to prevent reflection is to use dissipation zones at the cost of increased computational effort. On many occasions, the size of the dissipation area is...journal article 2020
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- Veldman, Arthur E.P. (author), van der Plas, Peter (author), Seubers, Henk (author), Hosseini Zahraei, S.M. (author), Chang, X. (author), Wellens, P.R. (author), Helder, Joop (author) conference paper 2019
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- Wellens, Peter (author) journal article 2018
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Duz, B. (author), Borsboom, M.J.A. (author), Veldman, A.E.P. (author), Wellens, P.R. (author), Huijsmans, R.H.M. (author)In this paper, the use of an absorbing boundary condition (ABC) is investigated for the numerical simulation of free surface water waves. An enhanced type of an ABC based on the first- and second-order Higdon boundary conditions is presented. The numerical implementation of the ABC using a staggered grid arrangement is explained in detail....journal article 2017
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Duz, B. (author), Borsboom, M.J.A. (author), Veldman, A.E.P. (author), Wellens, P.R. (author), Huijsmans, R.H.M. (author)In this paper the attention is focused on the effect of various VOF methods on efficient and accurate simulation of free surface water waves. For this purpose, we will compare several VOF methods in numerical simulations of propagating waves where strong nonlinear behavior is dominant in the flow. Comparisons and discussions will be provided to...conference paper 2016
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- Duz, B. (author), Borsboom, M.J.A. (author), Wellens, P.R. (author), Veldman, A.E.P. (author), Huijsmans, R.H.M. (author) conference paper 2013
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