Title: On the importance of strong fluid-solid coupling with application to human phonation

Authors: M. Kaltenbacher; S. Zörner; A. Hüppe

Addresses: Institute of Mechanics and Mechatronics, Vienna University of Technology, Wiedner Hauptstrasse 8-10, A-1040 Vienna, Austria ' Institute of Mechanics and Mechatronics, Vienna University of Technology, Wiedner Hauptstrasse 8-10, A-1040 Vienna, Austria ' Institute of Mechanics and Mechatronics, Vienna University of Technology, Wiedner Hauptstrasse 8-10, A-1040 Vienna, Austria

Abstract: An advanced finite element (FE) method is presented and applied to simulate the fluid-solid-acoustic interaction in human phonation. We apply an arbitrary-Lagrangian-Eulerian (ALE) method, which allows coupling of the Eulerian fluid field with the Lagrangian mechanical field. Thereby, we investigate strong and weak (sequential staggered) coupling schemes for flow and structural mechanics. The acoustic field is computed by acoustic perturbation equations to account for convection and refraction effects of the sound in the flow region. For our application - the human phonation - we can assume a low Mach number flow and therefore use a hybrid aeroacoustic approach, which just consider a forward coupling from the flow to the acoustic field.

Keywords: fluid-solid coupling; finite element method; FEM; computational aeroacoustics; human phonation; Eulerian fluid field; Lagrangian mechanical field; structural mechanics; acoustics; sound convection; sound refraction.

DOI: 10.1504/PCFD.2014.059195

Progress in Computational Fluid Dynamics, An International Journal, 2014 Vol.14 No.1, pp.2 - 13

Received: 08 May 2021
Accepted: 12 May 2021

Published online: 08 Feb 2014 *

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