| Issue |
MATEC Web Conf.
Volume 328, 2020
XXII. International Scientific Conference – The Application of Experimental and Numerical Methods in Fluid Mechanics and Energy 2020 (AEaNMiFMaE-2020)
|
|
|---|---|---|
| Article Number | 02023 | |
| Number of page(s) | 7 | |
| Section | Modelling and Simulation in Fluid Mechanics and Energy | |
| DOI | https://doi.org/10.1051/matecconf/202032802023 | |
| Published online | 18 November 2020 | |
Study of Human Phonation with Attention on Sub-Grid Scale Turbulence Models and Initialization Effects
1 Technical University of Liberec, Faculty of Mechatronics, Informatics and Interdisciplinary Studies, NTI Institute, Studentska 2, 461 17 Liberec, Czech Republic
2 Faculty of Mechanical Engineering, Department of Technical Mathematics, Czech Technical University in Prague, Karlovo nam. 13, Prague, Czech Republic
3 Institute of Thermomechanics, The Czech Academy of Sciences, Dolejskova 5, 182 00, Prague 8, Czech Republic
* Corresponding author: martin.lasota@tul.cz
The first aim of this paper is to compare three cases, where two cases contain turbulence sub-grid scale (SGS) models, which are commonly applied in wall-bounded flows. They use a bit different formulation of how to estimate the eddy-viscosity fields in a vicinity of walls. The SGS effect is obvious on flow rates through an intra-glottal gap. The second aim is to attend to a direct impact of the specific SGS model onto the sound pressure levels of frequency components (human formants). The third aim is focused on the effect of an initial time, when the vocal folds are in a start convergent phase itself and when the flow is suddenly accelerated due to boundary conditions. The effect is shown at aeroacoustic spectra.
© The Authors, published by EDP Sciences, 2020
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