Results 31 to 40 of about 266 (79)

Modeling Free Surface Flows Using Stabilized Finite Element Method

Mathematical Problems in Engineering, Volume 2018, Issue 1, 2018., 2018
This work aims to develop a numerical wave tank for viscous and inviscid flows. The Navier‐Stokes equations are solved by time‐discontinuous stabilized space‐time finite element method. The numerical scheme tracks the free surface location using fluid velocity. A segregated algorithm is proposed to iteratively couple the fluid flow and mesh deformation
Deepak Garg, Antonella Longo, Paolo Papale, Luis J. Yebra   +3 more
wiley   +1 more source

Analisis Hidrodinamik pada Oscillating Water Column (Owc) dengan menggunakan Eigenfunction Expansion Method dan Software Nemoh [PDF]

, 2023
Indonesia is a maritime country that has great potential to utilize sea wave energy as a renewable energy source. However, the development of technology to utilize wave energy in Indonesia is currently still not optimal even though it is quite ...
Saragih, Ditami Aswanda
core  

Analyzing the Near-Field Effects and the Power Production of an Array of Heaving Cylindrical WECs and OSWECs Using a Coupled Hydrodynamic-PTO Model

Energies, 2018
The Power Take-Off (PTO) system is the key component of a Wave Energy Converter (WEC) that distinguishes it from a simple floating body because the uptake of the energy by the PTO system modifies the wave field surrounding the WEC.
Philip Balitsky, Nicolas Quartier, Gael Verao Fernandez, Vasiliki Stratigaki, Peter Troch   +4 more
doaj   +1 more source

Terminal weight and constraint design for wave energy converter economic model predictive control problems

International Journal of Robust and Nonlinear Control, Volume 35, Issue 7, Page 2694-2716, 10 May 2025.
Abstract The wave energy converter (WEC) control problem aims to make the best use of wave excitation to maximize energy capture and ensure safe operation across a broad range of sea states. This falls into the recently developed economic model predictive control (EMPC) framework, subject to wave excitation being treated as a predictable additive ...
Siyuan Zhan, Yutao Chen, John Vincent Ringwood   +2 more
wiley   +1 more source

Effect of panel method codes in estimating the time-domain responses of floating wind turbines

Brodogradnja
This study investigates the impact of frequency-domain hydrodynamic outputs from several panel method codes on estimating time domain responses of floating wind turbines. The tools under examination are WAMIT and three open-source codes (HAMS, NEMOH, and
Muhammed Ucar, Mohamad Hmedi, Emre Uzunoglu, Elif Oguz   +3 more
doaj   +1 more source

Nonlinear impedance matching control for a submerged wave energy converter

IET Control Theory &Applications, Volume 18, Issue 4, Page 465-478, March 2024.
The paper proposes a variation of the impedance matching control, also known as approximate complex conjugate (ACC) strategy. The proposed variation is denoted here as nonlinear complex conjugate (NCC) control since it includes a nonlinear damping term in addition to the usual ones, which are related to the linear stiffness and the linear damping ...
Alejandro Gonzalez‐Esculpi, Cristina Verde, Paul Maya‐Ortiz   +2 more
wiley   +1 more source

Introducing Second Order Low Frequency Loads in the Open-Source Boundary Element Method Code Nemoh

, 2015
International audienceThis paper describes the implementation of the second order low frequency loads in the opensource potential flow solverNemoh. Thequadratic part of the difference frequency quadratic transfer functions (QTF-),depending on first order
Delhommeau, Gérard, Babarit, Aurélien, Robaux, Fabien, Combourieu, Adrien, Peyrard, Christophe, Philippe, Maxime   +5 more
core   +4 more sources

Review of recent WEC-Sim (v6.1) advanced features

International Marine Energy Journal
WEC-Sim (Wave Energy Converter SIMulator) is an opensource software for modeling the motions, loads and power generation of wave energy converters. WEC-Sim performs simulations in the time domain using hydrodynamic coefficients calculated by boundary ...
Jeff Grasberger, Mohamed Shabara, Adam Keester, Kelley Ruehl, Dominic Forbush, Salman Husain, Jorge Leon, David Ogden, Ryan Davies   +8 more
doaj   +1 more source

Hydrodynamic Loads on a Semi-Submersible Platform Supporting a Wind Turbine Under a Mooring System With Buoys

Polish Maritime Research
In this study, the effect of a 10MW DTU wind turbine (WT) on a semi-submersible platform is examined from the point of view of its dynamic behaviour as part of a mooring system with attached buoys. The platform has a rectangular geometry, and consists of
Mazarakos Thomas, Tsaousis Theodosis
doaj   +1 more source

Computation of the Diffraction Transfer Matrix and the Radiation Characteristics in the open source zero-order BEM code NEMOH [PDF]

, 2016
International audienceThis paper presents a comparison of the hydrodynamic operators DTM and RC of a cylinder computed with the BEM solver NEMOH, in which the methodology of [2] has been implemented, and the ones obtained with the alternative approach ...
Rongère, François, Fabregas Flavià, Francesc, Babarit, Aurélien, Mcnatt, Cameron, Clément, Alain H.   +4 more
core   +1 more source