Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Modelling of nonlinear acoustic harmonic interaction effects for perforates
KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW. KTH, School of Industrial Engineering and Management (ITM), Centres, Competence Center for Gas Exchange (CCGEx).ORCID iD: 0000-0002-8474-8563
2019 (English)In: Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019, Canadian Acoustical Association , 2019Conference paper, Published paper (Refereed)
Abstract [en]

The effect of high level multi-tone acoustic excitation on the acoustic properties of acoustic liners and perforates has been discussed in a number of papers. It has mainly been based on experimental studies of the nonlinear properties of these types of samples without mean grazing or bias flow. Comparisons to a simulation model has also been made in some previous papers. In the present paper a model for the harmonic interaction caused by high level excitation will be tested. The idea is to use the so called nonlinear scattering matrix model combined with a semi-empirical model. Results are compared to experimental results for an orifice plate and perforate sample. The research questions of interest are: Can the model previously used to study nonlinear effects at the tonal excitation frequency also be used to describe harmonic interaction effects? That is if we excite the system at a certain frequency can the model describe how much sound that is generated (transferred) at higher harmonics. As part of that investigation nonlinear scattering matrix models will be used both to evaluate simulated and experimental data. This comparison is used to draw conclusions on if the nonlinear scattering matrix model gives physically meaningful results. There are a number of simplifying assumptions made in order to reach the model used so using the simulated results can be a way to investigate under which conditions they are valid

Place, publisher, year, edition, pages
Canadian Acoustical Association , 2019.
Keywords [en]
Acoustic liners, Harmonic interaction, Mufflers, Nonlinear effects, Perforates, Acoustic properties, Matrix algebra, Perforating, Excitation frequency, Harmonic interaction effects, Harmonic interactions, Nonlinear effect, Nonlinear scattering, Semi-empirical modeling, Simplifying assumptions, Harmonic analysis
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:kth:diva-268508Scopus ID: 2-s2.0-85073011664ISBN: 9781999181000 (print)OAI: oai:DiVA.org:kth-268508DiVA, id: diva2:1417814
Conference
26th International Congress on Sound and Vibration, ICSV 2019, 7 July 2019 through 11 July 2019
Note

QC 20200330

Available from: 2020-03-30 Created: 2020-03-30 Last updated: 2020-03-30Bibliographically approved

Open Access in DiVA

No full text in DiVA

Scopus

Authority records BETA

Bodén, Hans

Search in DiVA

By author/editor
Bodén, Hans
By organisation
Linné Flow Center, FLOWCompetence Center for Gas Exchange (CCGEx)
Applied Mechanics

Search outside of DiVA

GoogleGoogle Scholar

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 25 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf