A new multi-fidelity flow-acoustics simulation framework for wind farm application

J Cao, CM Nyborg, J Feng, KS Hansen… - … and Sustainable Energy …, 2022 - Elsevier
To reduce the release of CO 2 from traditional energy, wind energy is developed very fast all
over the world. This means that more large wind turbines will be installed on land and more …

Higher-order accurate two-step finite difference schemes for the many-dimensional wave equation

S Bilbao, B Hamilton - Journal of Computational Physics, 2018 - Elsevier
The accurate simulation of wave propagation is a problem of longstanding interest. In this
article, the focus is on higher-order accurate finite difference schemes for the wave equation …

Non-stiff boundary and interface penalties for narrow-stencil finite difference approximations of the Laplacian on curvilinear multiblock grids

M Almquist, EM Dunham - Journal of Computational Physics, 2020 - Elsevier
The Laplacian appears in several partial differential equations used to model wave
propagation. Summation-by-parts–simultaneous approximation term (SBP-SAT) finite …

Simulation of flexural-gravity wave propagation for elastic plates in shallow water using an energy-stable finite difference method with weakly enforced boundary and …

N Tazhimbetov, M Almquist, J Werpers… - Journal of Computational …, 2023 - Elsevier
We introduce an energy stable, high-order-accurate finite difference approximation of the
dynamic, pure bending Kirchhoff plate equations for complex geometries and spatially …

[HTML][HTML] An inter-model comparison of parabolic equation methods for sound propagation from wind turbines

CM Nyborg, K Bolin, I Karasalo… - The Journal of the …, 2023 - pubs.aip.org
The modeling of sound propagation for land-based wind turbines is a complex task that
takes various parameters into account. Not only do the wind speed and wind direction affect …

An improved high order finite difference method for non-conforming grid interfaces for the wave equation

S Wang - Journal of Scientific Computing, 2018 - Springer
This paper presents an extension of a recently developed high order finite difference method
for the wave equation on a grid with non-conforming interfaces. The stability proof of the …

High-order numerical methods for 2D parabolic problems in single and composite domains

G Ludvigsson, KR Steffen, S Sticko, S Wang… - Journal of Scientific …, 2018 - Springer
In this work, we discuss and compare three methods for the numerical approximation of
constant-and variable-coefficient diffusion equations in both single and composite domains …

High-fidelity numerical simulation of the dynamic beam equation

K Mattsson, V Stiernström - Journal of Computational Physics, 2015 - Elsevier
A high-fidelity finite difference approximation of the dynamic beam equation is derived.
Different types of well-posed boundary conditions are analysed. The boundary closures are …

Efficient discretization of the Laplacian on complex geometries

G Eriksson - arXiv preprint arXiv:2404.09050, 2024 - arxiv.org
Highly accurate simulations of problems including second derivatives on complex
geometries are of primary interest in academia and industry. Consider for example the …

[HTML][HTML] Acoustic shape optimization using energy stable curvilinear finite differences

G Eriksson, V Stiernström - Journal of Computational Physics, 2024 - Elsevier
A gradient-based method for shape optimization problems constrained by the acoustic wave
equation is presented. The method makes use of high-order accurate finite differences with …