A damping preconditioner for time-harmonic wave equations in fluid and elastic material
Airaksinen, T., Pennanen, A., & Toivanen, J. (2009). A damping preconditioner for time-harmonic wave equations in fluid and elastic material. Journal Of Computational Physics, 228(5), 1466-1479. https://doi.org/10.1016/j.jcp.2008.10.036
Published inJournal Of Computational Physics
A physical damping is considered as a preconditioning technique for acoustic and elastic wave scattering. The earlier preconditioners for the Helmholtz equation are generalized for elastic materials and three-dimensional domains. An algebraic multigrid method is used in approximating the inverse of damped operators. Several numerical experiments demonstrate the behavior of the method in complicated two-dimensional and three-dimensional domains.
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Airaksinen, Tuomas; Heikkola, Erkki; Pennanen, Anssi; Toivanen, Jari (Elsevier, 2007)A preconditioner defined by an algebraic multigrid cycle for a damped Helmholtz operator is proposed for the Helmholtz equation. This approach is well suited for acoustic scattering problems in complicated computational ...
Mönkölä, Sanna; Airaksinen, Tuomas; Makkonen, Pekka; Tuovinen, Tero; Neittaanmäki, Pekka (European Consortium for Mathematics in Industry, 2011)Computational acoustical models allow automated optimization of tractor design with respect to acoustic properties, which could speed up significantly the design process of tractor cabin prototypes. This article gives ...
Airaksinen, Tuomas; Heikkola, Erkki; Toivanen, Jari (World Scientific Publishing, 2011)A numerical method for optimizing the local control of sound in a stochastic domain is developed. A three-dimensional enclosed acoustic space, for example, a cabin with acoustic actuators in given locations is modeled ...
Mönkölä, Sanna (University of Jyväskylä, 2008)
Pennanen, Anssi (University of Jyväskylä, 2010)