The Application of Lighthill Analogy on the Numerical Simulation of Human Phonation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F17%3A00312244" target="_blank" >RIV/68407700:21220/17:00312244 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2017/38-TPFM2017.pdf" target="_blank" >http://www.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2017/38-TPFM2017.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/TPFM.2017.038" target="_blank" >10.14311/TPFM.2017.038</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Application of Lighthill Analogy on the Numerical Simulation of Human Phonation

Popis výsledku v původním jazyce

This paper deals with the numerical simulation of the flow induced sound as generated in the human phonation process. The partitioned approach is used for solving the fluid-structure interaction, whereas the acoustic part is only weakly coupled. The two-dimensional fluid-structure interaction problem is modelled with the aid of linear elasticity theory and by the incompressible Navier-Stokes equations in the arbitrary Lagrangian-Eulerian form. For calculation of sound sources and its propagation the inhomogeneous wave equation of Lighthill is applied and solved by the finite element method. Further, the numerical model based on finite element method is described for the elastic body motion, the fluid flow and the acoustics. In order to overcome numerical instabilities arising due to high Reynolds numbers, the modified streamline-upwind/Petrov-Galerkin stabilization is used. Finally, the implemented iterative coupling procedure is explained and numerical results are presented.

Název v anglickém jazyce

The Application of Lighthill Analogy on the Numerical Simulation of Human Phonation

Popis výsledku anglicky

This paper deals with the numerical simulation of the flow induced sound as generated in the human phonation process. The partitioned approach is used for solving the fluid-structure interaction, whereas the acoustic part is only weakly coupled. The two-dimensional fluid-structure interaction problem is modelled with the aid of linear elasticity theory and by the incompressible Navier-Stokes equations in the arbitrary Lagrangian-Eulerian form. For calculation of sound sources and its propagation the inhomogeneous wave equation of Lighthill is applied and solved by the finite element method. Further, the numerical model based on finite element method is described for the elastic body motion, the fluid flow and the acoustics. In order to overcome numerical instabilities arising due to high Reynolds numbers, the modified streamline-upwind/Petrov-Galerkin stabilization is used. Finally, the implemented iterative coupling procedure is explained and numerical results are presented.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

Topical problems of fluid mechanics

ISBN

978-80-87012-61-1

ISSN

2336-5781

e-ISSN

—

Počet stran výsledku

10

Strana od-do

303-312

Název nakladatele

Ústav termomechaniky AV ČR, v.v.i.

Místo vydání

—

Místo konání akce

Praha

Datum konání akce

15. 2. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000404424300038