Showing items with similar title or keywords.

• Time-harmonic solution for acousto-elastic interaction with controllability and spectral elements 

  Mönkölä, Sanna (Elsevier, 2010)

  The classical way of solving the time-harmonic linear acousto-elastic wave problem is to discretize the equations with finite elements or finite differences. This approach leads to large-scale indefinite complex-valued ...

• Controllability method for acoustic scattering with spectral elements 

  Heikkola, Erkki; Mönkölä, Sanna; Pennanen, Anssi; Rossi, Tuomo (Elsevier, 2007)

  We formulate the Helmholtz equation as an exact controllability problem for the time-dependent wave equation. The problem is then discretized in time domain with central finite difference scheme and in space domain with ...

• On the finite element method for time-harmonic acoustic boundary value problems 

  Neittaanmäki, Pekka; Picard, Rainer (Pergamon Press, 1981)

  The time harmonic acoustic boundary value problem in a smooth, bounded domain G of R2 is considered as a first order system. The optimal asymptotic L2(G) and H1(G)-error estimates 0(h2) and 0(h) resp. are derived for a ...

• Numerical methods for acoustics and noise control 

  Airaksinen, Tuomas (University of Jyväskylä, 2010)

  This dissertation considers numerical methods for wave propagation modelling and noise control. The first part of the dissertation discusses an efficient method for solving time-harmonic wave equations in acoustic (the ...

• Spectral element method and controllability approach for time-harmonic wave propagation 

  Mönkölä, Sanna (University of Jyväskylä, 2008)