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

Weitz M, Schoder S, Maurerlehner P, Falk S, Döllinger M, Kaltenbacher M (2019)

Publication Type: Conference contribution

Publication year: 2019

Publisher: International Commission for Acoustics (ICA)

Book Volume: 2019-September

Pages Range: 1780-1787

Conference Proceedings Title: Proceedings of the International Congress on Acoustics

Event location: Aachen DE

ISBN: 9783939296157

DOI: 10.18154/RWTH-CONV-239325

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.

Authors with CRIS profile

Sebastian Falk
Michael Döllinger Professur für Computational Medicine (DFG-Forschungsprofessur)

Involved external institutions

Technische Universität Wien / Vienna University of Technology AT Austria (AT)

How to cite

APA:

Weitz, M., Schoder, S., Maurerlehner, P., Falk, S., Döllinger, M., & Kaltenbacher, M. (2019). Acoustic source term interpolation in a hybrid aeroacoustic simulation of the human phonation. In Martin Ochmann, Vorlander Michael, Janina Fels (Eds.), Proceedings of the International Congress on Acoustics (pp. 1780-1787). Aachen, DE: International Commission for Acoustics (ICA).

MLA:

Weitz, Michael, et al. "Acoustic source term interpolation in a hybrid aeroacoustic simulation of the human phonation." Proceedings of the 23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019, Aachen Ed. Martin Ochmann, Vorlander Michael, Janina Fels, International Commission for Acoustics (ICA), 2019. 1780-1787.

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