Recent advances in acoustic boundary element methods

S Preuss, C Gurbuz, C Jelich, SK Baydoun… - Journal of Theoretical …, 2022 - World Scientific
The modern scope of boundary element methods (BEM) for acoustics is reviewed in this
paper. Over the last decades the BEM has gained popularity despite suffering from …

A numerical model of an acoustic metamaterial using the boundary element method including viscous and thermal losses

VC Henríquez, PR Andersen, JS Jensen… - Journal of …, 2017 - World Scientific
In recent years, boundary element method (BEM) and finite element method (FEM)
implementations of acoustics in fluids with viscous and thermal losses have been …

A three-dimensional acoustic boundary element method formulation with viscous and thermal losses based on shape function derivatives

VC Henríquez, PR Andersen - Journal of theoretical and …, 2018 - World Scientific
Sound waves in fluids are subject to viscous and thermal losses, which are particularly
relevant in the so-called viscous and thermal boundary layers at the boundaries, with …

Revising the Boundary Element Method for Thermoviscous Acoustics: An Iterative Approach via Schur Complement

S Preuss, M Paltorp, A Blanc, VC Henríquez… - Journal of Theoretical …, 2023 - orbit.dtu.dk
The Helmholtz equation is a reliable model for acoustics in inviscid fluids. Real fluids,
however, experience viscous and thermal dissipation that impact the sound propagation …

A two-dimensional acoustic tangential derivative boundary element method including viscous and thermal losses

PR Andersen, VC Henríquez, N Aage… - Journal of theoretical …, 2018 - World Scientific
In recent years, the boundary element method has shown to be an interesting alternative to
the finite element method for modeling of viscous and thermal acoustic losses. Current …

Implementation of an acoustic 3D BEM with visco-thermal losses

VC Henríquez, PM Juhl - Proceedings of Internoise 2013: Noise Control …, 2013 - orbit.dtu.dk
There is an increasing need in industry for numerical acoustic models including viscous and
thermal losses of sound in air. Small devices such as couplers, microphones, mobile phones …

An equivalent source method for acoustic problems with thermoviscous effects

MH Liang, CJ Zheng, YB Zhang, S Wang… - The Journal of the …, 2024 - pubs.aip.org
This paper presents an equivalent source method (ESM) for analyzing sound propagation in
small-scale acoustic structures with thermoviscous effects. The formulations that describe …

[PDF][PDF] Implementation aspects of the Boundary Element Method including viscous and thermal losses

VC Henríquez, PM Juhl - … of the 43rd International Congress and …, 2014 - acoustics.asn.au
The implementation of viscous and thermal losses using the Boundary Element Method
(BEM) is based on the Kirchhoff's dispersion relation and has been tested in previous work …

Visco‐thermal Effects in Acoustic Metamaterials Based on Local Resonances

J sánchez‐Dehesa… - … and Applications of …, 2019 - Wiley Online Library
This chapter is devoted to study the contribution of viscothermal effects in some specific
acoustic metamaterials. Particularly, in those whose negative effective parameters are a …

Modelling of acoustic viscothermal losses using the Boundary Element Method: From method to optimization

PR Andersen - 2018 - orbit.dtu.dk
A range of acoustic engineering problems require the inclusion of viscous and thermal
dissipation to be modelled accurately. The dissipative effects are especially relevant when …