Abstract
A computationally fast and accurate model (a set of coupled
ordinary differential equations) for fluid sound-wave
propagation in infinite axisymmetric waveguides of varying
radius is proposed. The model accounts for fluid heat conduction
and fluid irrotational viscosity. The model problem
is solved by expanding solutions in terms of cross-sectional
eigenfunctions following Stevenson’s method. A transfer matrix
can be easily constructed from simple model responses
of a given waveguide and later used in computing the response
to any complex wave input. Energy losses due to heat
conduction and viscous effects are also assessed.
Original language | English |
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Journal | Acta Acustica United with Acustica |
Volume | 94 |
Issue number | 5 |
Pages (from-to) | 668-675 |
ISSN | 1610-1928 |
DOIs | |
Publication status | Published - 2008 |