Journal ArticleDOI
A modified High-Order Spectral method for wavemaker modeling in a numerical wave tank
Reads0
Chats0
TLDR
In this article, a 3D Numerical Wave Tank (NWT) based on a nonlinear model using the High-Order Spectral (HOS) method, which exhibits high level of accuracy as well as efficiency properties provided by a Fast Fourier Transform (FFT) solution.Abstract:
This paper presents the recent development on the nonlinear directional wave generation process in a 3D Numerical Wave Tank (NWT). The NWT is based on a nonlinear model using the High-Order Spectral (HOS) method, which exhibits high level of accuracy as well as efficiency properties provided by a Fast Fourier Transform (FFT) solution. The wavemaker modeling appears to be a key point in the simulation and it is carefully detailed. Different levels of approximation of the wave generation (up to third-order in nonlinearity) are studied. The properties of the numerical scheme in terms of convergence, stability and accuracy are discussed. This NWT features all the characteristics of the real wave tank (directional wavemaker, absorbing zone, perfectly reflective side walls). Furthermore, several validation results and practical applications where numerical simulations are successfully compared to experiments on 2D and 3D wave fields are presented.read more
Citations
More filters
Journal ArticleDOI
HOS-ocean: Open-source solver for nonlinear waves in open ocean based on High-Order Spectral method
TL;DR: HOS-ocean is an efficient High-Order Spectral code developed to solve the deterministic propagation of nonlinear wavefields in open ocean and is released as open-source, developed and distributed under the terms of GNU General Public License (GPLv3).
Journal ArticleDOI
Efficient Nonlinear Hydrodynamic Models for Wave Energy Converter Design—A Scoping Study
Josh Davidson,Ronan Costello +1 more
TL;DR: In this article, the authors focus on the most suitable form of hydrodynamic modeling for the next generation wave energy converter (WEC) design tools, focusing on what CFD theories exist intermediate to LPF and RANS as well as other modeling options that are computationally fast while retaining higher fidelity than LPF.
Journal ArticleDOI
On a unified breaking onset threshold for gravity waves in deep and intermediate depth water
X. Barthelemy,Michael L. Banner,William L. Peirson,Francesco Fedele,Michael J. Allis,Frédéric Dias +5 more
TL;DR: In this paper, the authors investigated geometric, kinematic and energetic differences between maximally tall non-breaking waves and marginally breaking waves in focusing wave groups and showed that the initial breaking instability occurs within a very compact region centred on the wave crest.
Journal ArticleDOI
Extreme wave generation using self correcting method — Revisited
TL;DR: A Self Correcting Method (SCM) is applied to optimize the control signal of the wave maker in a Numerical Wave Tank (NWT) to generate a tsunami at a predefined position and the comparison of the results with the time series recorded in the Pago Pago harbour (Samoa) is very encouraging.
Journal ArticleDOI
Development and validation of a non-linear spectral model for water waves over variable depth
TL;DR: In this paper, two numerical schemes for propagating waves over a variable bathymetry in an existing High-Order Spectral (HOS) model are introduced, and the numerical properties (accuracy, convergence rate, efficiency) with respect to the numerical parameters on a simple configuration are investigated.
References
More filters
Journal ArticleDOI
Stability of periodic waves of finite amplitude on the surface of a deep fluid
TL;DR: In this article, the stability of steady nonlinear waves on the surface of an infinitely deep fluid with a free surface was studied. And the authors considered the problem of stability of surface waves as part of the more general problem of nonlinear wave in media with dispersion.
Journal ArticleDOI
A variable order Runge-Kutta method for initial value problems with rapidly varying right-hand sides
Jeff Cash,Alan H. Karp +1 more
TL;DR: A family of explicit Runge-Kutta formulas that contains imbedded formulas of all orders 1 through 4 is derived, which is very efficient for problems with smooth solution as well as problems having rapidly varying solutions.
Journal ArticleDOI
A high-order spectral method for the study of nonlinear gravity waves
TL;DR: In this paper, the authors developed a robust numerical method for modeling nonlinear gravity waves which is based on the Zakharov equation/mode-coupling idea but is generalized to include interactions up to an arbitrary order M in wave steepness.
Journal ArticleDOI
Numerical simulation of gravity waves
Walter Craig,Catherine Sulem +1 more
TL;DR: In this paper, the Taylor expansion of the Dirichlet Neumann operator in homogeneous powers of the surface elevation η and the velocity potential ϕ is proposed to simulate the water wave problem in a channel for a fluid of finite or infinite depth.
Book
Coastal Processes with Engineering Applications
TL;DR: In this article, the authors present an overview of the coastal process and its long-term processes, including longterm processes of sediment transport, flooding, and storm surge, as well as modeling of beaches and shorelines.