Please use this identifier to cite or link to this item:
Title: Towards a monotonicity-preserving inviscid wall boundary condition for aeroacoustics
Authors: Spisso, I.
Rona, Aldo
Georgoulis, M.
First Published: May-2009
Presented at: 15th AIAA/CEAS Aeroacoustics Conference (30th AIAA Aeroacoustics Conference), 2009, Miami, Florida
Publisher: American Institute of Aeronautics and Astronautics (AIAA)
Citation: 15th AIAA/CEAS Aeroacoustics Conference (30th AIAA Aeroacoustics Conference), 2009
Abstract: This paper presents an extension of the Tam and Dong solid wall boundary condition that combines the established non-penetration physical condition with a further restriction on the wall-normal velocity gradient. This results in a wall boundary condition in the form of a second-order partial differential equation which is satisfied analytically by fully reflecting acoustic waves and is monotonicity preserving in problems with a dominant near-boundary acoustic pressure distribution. With the extended wall boundary condition discretized to second-order spatial accuracy, tests on the wall reflection of a two-dimensional Gaussian pulse show that this condition suppresses the high wavenumber spurious numerical waves from the more conventional v = 0 formulation. This result is obtained using a compact finite-difference time-marching scheme that is sixth-order accurate in space and fourth-order accurate in time without the use of high-order filters applied to the computational domain interior. Copyright © 2009 by A. Rona.
DOI Link: 10.2514/6.2009-3179
ISBN: 9781563479748
Version: Post-print
Status: Peer-reviewed
Type: Conference Paper
Rights: Copyright © 2009 by A. Rona. Published by the American Institute of Aeronautics and Astronautics (AIAA), with permission. Deposited with reference to the publisher's copyright and archiving policy.
Appears in Collections:Conference Papers & Presentations, Dept. of Engineering

Files in This Item:
File Description SizeFormat 
aiaa20093179.pdfPost-review (final submitted)396.18 kBAdobe PDFView/Open

Items in LRA are protected by copyright, with all rights reserved, unless otherwise indicated.