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Analysis of Stretched Grids as Buffer Zones in Aero-Acoustic Simulations
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Aeroacoustics.ORCID iD: 0000-0002-9061-4174
It Department, Uppsala University, Uppsala.
2009 (English)In: 15th AIAA/CEAS Aeroacoustics Conference (30th AIAA Aeroacoustics Conference), 2009Conference paper, Published paper (Other academic)
Abstract [en]

A zone of increasingly stretched grid is a robust and easy-to-use way to avoid unwanted reections at artificial boundaries in aero-acoustic simulations. There are two main damping mechanisms, dissipation and under-resolution a traveling wave, respectively. In this paper the behavior of acoustic waves and wave packages, respectively, are studied via analysis of solutions to a semi-discrete linear boundary value problem. The solutions of the linear problem is compared to solutions of the full non-linear Euler equations.

Place, publisher, year, edition, pages
2009.
National Category
Computational Mathematics
Identifiers
URN: urn:nbn:se:kth:diva-77821Scopus ID: 2-s2.0-78149449800OAI: oai:DiVA.org:kth-77821DiVA: diva2:492106
Conference
15th AIAA/CEAS Aeroacoustics Conference (30th AIAA Aeroacoustics Conference), Miami, Florida, May 11-13, 2009
Note
QC 20120208Available from: 2012-02-07 Created: 2012-02-07 Last updated: 2012-02-08Bibliographically approved

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Efraimsson, Gunilla

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