Abstract
A method for directly computing acoustic signatures without a wave equation analogy is presented. The governing acoustic equations are derived from the unsteady Euler equations by linearizing about a steady mean flow and by assuming a single frequency disturbance. A rigid, stationary body is assumed and a non-reflecting type of boundary condition is used at the far-field.
Scattering of plane sound waves is investigated in both lifting and non-lifting scenarios. Some comparisons are made with known analytic solutions where available.
This research was supported by the McDonnell Douglas Independent Research and Development Program. Some computations were performed at the MIT Cray Supercomputer Facility.
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© 1993 Springer-Verlag New York, Inc.
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Huh, K.S., Widnall, S.E., Agarwal, R.K. (1993). Scattering of Sound by Rigid Bodies in Arbitrary Flows. In: Hardin, J.C., Hussaini, M.Y. (eds) Computational Aeroacoustics. ICASE/NASA LaRC Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4613-8342-0_26
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DOI: https://doi.org/10.1007/978-1-4613-8342-0_26
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