Mikrojärjestelmien virtausdynamiikka numeerisen mallintamisen näkökulmasta
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Airaksinen, Tuomas; Pennanen, Anssi; Toivanen, Jari (Elsevier, 2009)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 ...
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; 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 ...
Airaksinen, Tuomas; Heikkola, Erkki (University of Jyväskylä, 2010)Shape optimization of a duct system with respect to sound transmission loss is considered. The objective of optimization is to maximize the sound transmission loss at multiple frequency ranges simultaneously by adjusting ...
Airaksinen, Tuomas; Heikkola, Erkki (Acoustical Society of America, 2011)This paper considers the combined use of a hybrid numerical method for the modeling of acoustic mufflers and a genetic algorithm for multiobjective optimization. The hybrid numerical method provides accurate modeling of ...