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Numerically nonreflecting boundary and interface conditions

Colonius, Tim (1996) Numerically nonreflecting boundary and interface conditions. In: 2nd AIAA/CEAS Aeroacoustics Conference, 6-8 May 1996, State College, PA.

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Accurate nonreflecting or radiation boundary conditions are important for effective computation of aeroacoustic and compressible flow problems. In the present work, exact 'discretely nonreflecting boundary closures are derived by considering a one dimensional hyperbolic equation discretized with finite difference schemes and Runge-Kutta time advancements. The current methodology leads to stable local finite-difference-like boundary closures which are nonreflecting to an essentially arbitrarily high order of accuracy. These conditions can also be applied at interfaces where there is a discontinuity in the wave speed or where there is an abrupt change in the grid spacing. compared to other boundary treatments, the present boundary and interface conditions can reduce spurious reflected energy in the computational domain by many orders of magnitude.

Item Type:Conference or Workshop Item (Paper)
Related URLs:
URLURL TypeDescription Paper Paper
Colonius, Tim0000-0003-0326-3909
Additional Information:© 1996 American Institute of Aeronautics and Astronautics, Inc. Published Online: 22 Aug 2012.
Subject Keywords:Aeroacoustics
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Other Numbering System NameOther Numbering System ID
AIAA Paper96-1661
Record Number:CaltechAUTHORS:20190726-104730993
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97468
Deposited By: Melissa Ray
Deposited On:01 Aug 2019 18:30
Last Modified:16 Nov 2021 17:31

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