8–12 Sept 2026
Europe/Vienna timezone

Aeroacoustic Analysis of Prescribed Vocal Fold Motion in the SimVoice Benchmark using Wall-Modelled Large-Eddy Simulation

FA2026/145
11 Sept 2026, 14:40
20m
Galerie B (Messe Congress Graz)

Galerie B

Messe Congress Graz

A12 Numerical, Computational, and Theoretical Acoustics A12.11/A20.06 Fluid-structure-acoustic interaction in voice and speech generation

Speaker

Thomas Brunner (IGTE, TU Graz)

Description

Voice disorders affect millions of people across Europe, with significant implications for quality of life. Understanding the physical mechanisms underlying phonation and their variation under disturbances remains a central challenge. While the fundamental principles of voice production are well established, accurately modelling the complex fluid–structure–acoustic interactions between the vocal folds and the laryngeal airflow remains challenging. To foster reproducibility and cross-validation within the phonation research community, the SimVoice benchmark was established as a shared reference for both numerical and experimental investigations.In this study, complementary numerical and experimental analyses of the benchmark configuration are performed to investigate its aeroacoustic characteristics and further support methodological development. A computationally efficient framework based on the MGLET solver is employed to conduct Large-Eddy Simulations (LES) with prescribed vocal fold motion, permitting parameter studies of subglottal pressure variations and deformation patterns. Additional measurements using both rigid (non-oscillating) and deformable vocal folds provide a robust extension of the dataset for model calibration and parameter tuning. Exploring multiple operating points enhances the benchmark's characterization, advancing the broader goal of reproducible, physically grounded voice simulation. Our findings give new insights into the physics of voice production and contribute to the continued validation of the SimVoice benchmark.

Authors

Thomas Brunner (IGTE, TU Graz) Christoph Heigl (LSTM, FAU Erlangen-Nürnberg) Stefan Kniesburges (HNO-Klinik, UK Erlangen) Stefan Becker (LSTM, FAU Erlangen-Nürnberg) Johannes Kreuzinger (KM Turbulenz GmbH) Florian Schwertfirm (KM Turbulenz GmbH) Stefan Schoder (IGTE, TU Graz)

Presentation materials