## Point collocation scheme in silencers with temperature gradient and mean flow

- F. D. Denia, E. M. Sánchez-Orgaz, L. Baeza, R. Kirby
- J. Computational Applied Mathematics
- 2016

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@article{Kirby2003TransmissionLP, title={Transmission loss predictions for dissipative silencers of arbitrary cross section in the presence of mean flow.}, author={R. Kirby}, journal={The Journal of the Acoustical Society of America}, year={2003}, volume={114 1}, pages={200-9} }

- Published 2003 in The Journal of the Acoustical Society of America

A numerical technique is developed for the analysis of dissipative silencers of arbitrary, but axially uniform, cross section. Mean gas flow is included in a central airway that is separated from a bulk reacting porous material by a concentric perforate screen. The analysis begins by employing the finite element method to extract the eigenvalues and associated eigenvectors for a silencer of infinite length. Point collocation is then used to match the expanded acoustic pressure and velocity… CONTINUE READING

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