Applicability of Thompson boundary conditions to obliquely incident acoustic waves

A numerical study employing the Euler equations in a two-dimensional duct flows is presented. Thompson boundary conditions imposed at the inflow/outflow boundaries indicated bounded growth of absolute error with increasing angle of incidence of oblique acoustic disturbances, supporting the suitabili...

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Bibliographic Details
Published in:Applied acoustics 2001-08, Vol.62 (8), p.1013-1018
Main Authors: O'Sullivan, P.L, Reichert, R.S, Biringen, S, Howard, J.E, Watson, W
Format: Article
Language:English
Subjects:
Acoustics
Duct flows
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Linear acoustics
Oblique acoustic waves
Physics
Thompson boundary conditions
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Summary:A numerical study employing the Euler equations in a two-dimensional duct flows is presented. Thompson boundary conditions imposed at the inflow/outflow boundaries indicated bounded growth of absolute error with increasing angle of incidence of oblique acoustic disturbances, supporting the suitability of these boundary conditions for acoustic propagation and noise control problems.
ISSN:0003-682X
1872-910X
DOI:10.1016/S0003-682X(00)00086-4