Acoustic source term interpolation in a hybrid aeroacoustic simulation of the human phonation

Michael Weitz, Stefan Schoder, Paul Maurerlehner, Sebastian Falk, Michael Döllinger, Manfred Kaltenbacher

Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review

Abstract

Voice research is carried out experimentally by applying physical replicas and numerical models. Experimental investigations involve high personnel, material and thus financial costs. Furthermore, the scientific outcome is limited to the few parameters that are measured at specific positions in the larynx replica. In contrast to that, numerical models provide a much higher amount of results since parameters from all possible locations in the model can be obtained and analyzed. We follow a hybrid aeroacoustic approach, which performs in a first step an incompressible flow simulation on a computational grid which is capable of resolving all relevant turbulent scales. In a second step, we compute the acoustic source terms on the flow grid and perform a conservative interpolation to the acoustic grid on which we solve the perturbed convective wave equation to obtain the acoustic field. Finally, we validate the simulation results with results obtained from measurements.

Original languageEnglish
Title of host publicationProceedings of the 23rd International Congress on Acoustics
Subtitle of host publicationIntegrating 4th EAA Euroregio 2019
EditorsMartin Ochmann, Vorlander Michael, Janina Fels
PublisherInternational Commission for Acoustics (ICA)
Pages1780-1787
Number of pages8
ISBN (Electronic)9783939296157
DOIs
Publication statusPublished - 2019
Externally publishedYes
Event23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019 - Aachen, Germany
Duration: 9 Sep 201923 Sep 2019

Publication series

NameProceedings of the International Congress on Acoustics
Volume2019-September
ISSN (Print)2226-7808
ISSN (Electronic)2415-1599

Conference

Conference23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019
Country/TerritoryGermany
CityAachen
Period9/09/1923/09/19

Keywords

  • Computational aeroacoustics
  • Finite element method
  • Human phonation

ASJC Scopus subject areas

  • Mechanical Engineering
  • Acoustics and Ultrasonics

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