Flow and acoustic effects in the larynx for varying geometries

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F16%3A00003213" target="_blank" >RIV/46747885:24220/16:00003213 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.ingentaconnect.com/content/dav/aaua/2016/00000102/00000002/art00009" target="_blank" >http://www.ingentaconnect.com/content/dav/aaua/2016/00000102/00000002/art00009</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3813/AAA.918942" target="_blank" >10.3813/AAA.918942</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Flow and acoustic effects in the larynx for varying geometries

Popis výsledku v původním jazyce

Aeroacoustic phenomena are the main contribution to the human voice production process and the aim is to achieve a better understanding of this process by means of numerical simulation. A hybrid numerical approach is thereby used, decoupling computational flow dynamics (CFD) from computational aeroacoustics (CAA). In a first stage the airflow through the larynx with oscillating vocal folds is simulated. In a second stage the acoustic sources are determined and finally the propagation of the acoustic waves, by means of a perturbation approach. The developed tool is capable of analysing different scenarios in voice production. Here, we investigate various glottal geometries and vocal fold oscillations. Thereby, the CFD simulations are run for four glottal opening types: a rectangular form, triangular form, a sinusoidal form and for one case a vocal fold is kept static. Thereby, we study in detail the changes in the flow, the acoustic source terms as well as the generated sound.

Název v anglickém jazyce

Flow and acoustic effects in the larynx for varying geometries

Popis výsledku anglicky

Aeroacoustic phenomena are the main contribution to the human voice production process and the aim is to achieve a better understanding of this process by means of numerical simulation. A hybrid numerical approach is thereby used, decoupling computational flow dynamics (CFD) from computational aeroacoustics (CAA). In a first stage the airflow through the larynx with oscillating vocal folds is simulated. In a second stage the acoustic sources are determined and finally the propagation of the acoustic waves, by means of a perturbation approach. The developed tool is capable of analysing different scenarios in voice production. Here, we investigate various glottal geometries and vocal fold oscillations. Thereby, the CFD simulations are run for four glottal opening types: a rectangular form, triangular form, a sinusoidal form and for one case a vocal fold is kept static. Thereby, we study in detail the changes in the flow, the acoustic source terms as well as the generated sound.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BI - Akustika a kmity

OECD FORD obor

—

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Acta Acustica united with Acustica

ISSN

1610-1928

e-ISSN

—

Svazek periodika

102

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

257-267

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-84961644962