Impact of the Sub-Grid Scale Turbulence Model in Aeroacoustic Simulation of Human Voice

Martin Lasota*, Petr Šidlof*, Manfred Kaltenbacher, Stefan Schoder

*Korrespondierende/r Autor/in für diese Arbeit

Publikation: Beitrag in einer FachzeitschriftArtikel


In an aeroacoustic simulation of human voice production, the effect of the sub-grid scale (SGS) model on the acoustic spectrum was investigated. In the first step, incompressible airflow in a 3D model of larynx with vocal folds undergoing prescribed two-degree-of-freedom oscillation was simulated by laminar and Large-Eddy Simulations (LES), using the One-Equation and Wall-Adaptive Local-Eddy (WALE) SGS models. Second, the aeroacoustic sources and the sound propagation in a domain composed of the larynx and vocal tract were computed by the Perturbed Convective Wave Equation (PCWE) for vowels [u:] and [i:]. The results show that the SGS model has a significant impact not only on the flow field, but also on the spectrum of the sound sampled 1 cm downstream of the lips. With the WALE model, which is known to handle the near-wall and high-shear regions more precisely, the simulations predict significantly higher peak volumetric flow rates of air than those of the One-Equation model, only slightly lower than the laminar simulation. The usage of the WALE SGS model also results in higher sound pressure levels of the higher harmonic frequencies
Seiten (von - bis)1-19
FachzeitschriftApplied Sciences
PublikationsstatusVeröffentlicht - 2 Feb 2021

ASJC Scopus subject areas

  • !!Engineering(all)
  • !!Instrumentation
  • !!Materials Science(all)
  • !!Fluid Flow and Transfer Processes
  • !!Process Chemistry and Technology
  • !!Computer Science Applications


Untersuchen Sie die Forschungsthemen von „Impact of the Sub-Grid Scale Turbulence Model in Aeroacoustic Simulation of Human Voice“. Zusammen bilden sie einen einzigartigen Fingerprint.

Dieses zitieren