[Zurück]

P. Reiter, S. Gasparoni, M. Haider, M. Conter:
"Sonic crystals as advanced material for noise barriers";
in: "Proc. Internoise 2013, el. Paper #0764", Internoise, 2013, S. 1 - 7.

With sonic crystals it is, analog to photonic crystals, possible to produce band gaps. These acoustic band
gaps are the reason why sonic crystals are almost opaque for a certain frequency range, while not
influencing other parts of the acoustic spectrum. These properties make sonic crystals very interesting for
noise protection.
The main focus of this paper stands on the open source simulation methods, which were used to investigate
the properties of sonic crystals. Therefore two-dimensional simulations were performed to get angular
dependent transmission coefficients and sound attenuations for a test noise barrier.
The two mainly used open source computer simulation tools were Elmer and openBEM.
Elmer is a complete FEM multiphysics suite and openBEM is a boundary element solver specifically
designed for the Helmholtz equation.

sonic crystals, simulation, open source