The boundary element method (BEM) in the context of acoustics or Helmholtz problems is
reviewed in this paper. The basis of the BEM is initially developed for Laplace's equation …

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 …

Low noise constructions receive more and more attention in highly industrialized countries.
Consequently, decrease of noise radiation challenges a growing community of engineers …

Noise mitigation of stage machinery can be quite demanding and requires innovative
solutions. In this work, an acoustic metamaterial capsule is proposed to reduce the noise …

Choosing the right number and type of elements in modern commercial finite element tools
is a challenging task. It requires a broad knowledge about the theory behind or much …

The phenomenon of irregular frequencies or spurious modes when solving the Kirchhoff–
Helmholtz integral equation has been extensively studied over the last six or seven …

The commonly applied rule of thumb to use a fixed number of elements per wavelength in
linear time–harmonic acoustics is discussed together with the question of using either …

Boundary element discretization of the Kirchhoff–Helmholtz integral equation gives rise to a
linear system of equations. This system may be solved directly or iteratively. Application of …

This chapter presents an introduction to the solution of time-harmonic acoustic problems by
a boundary element method (BEM). Specifically, the Helmholtz equation with admittance …

The pollution effect is a well-known and well-investigated phenomenon of the finite element
method for wave problems in general and for acoustic problems in particular. It is …