Numerical solution of compressible and incompressible unsteady flows in channel inspired by vocal tract

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F14%3A00429316" target="_blank" >RIV/61388998:_____/14:00429316 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/14:00226156

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.cam.2013.12.045" target="_blank" >http://dx.doi.org/10.1016/j.cam.2013.12.045</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cam.2013.12.045" target="_blank" >10.1016/j.cam.2013.12.045</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical solution of compressible and incompressible unsteady flows in channel inspired by vocal tract

Popis výsledku v původním jazyce

This study deals with the numerical solution of a 2D unsteady flow of a viscous fluid in a channel for low inlet airflow velocity. The unsteadiness of the flow is caused by a prescribed periodic motion of a part of the channel wall with large amplitudes,nearly closing the channel during oscillations. The channel is a simplified model of the glottal space in the human vocal tract. Four governing systems are considered to describe the unsteady laminar flow of a viscous fluid in the channel. The numericalsolution is implemented using the finite volume method (FVM) and the predictor?corrector MacCormack scheme with artificial viscosity using a grid of quadrilateral cells. The unsteady grid of quadrilateral cells is considered in the form of conservationlaws using the Arbitrary Lagrangian?Eulerian method. The numerical simulations of flow fields in the channel, acquired from a developed program, are presented for inlet velocity u?=4.12ms1 and Reynolds number Re=4481 and the wall motion f

Název v anglickém jazyce

Numerical solution of compressible and incompressible unsteady flows in channel inspired by vocal tract

Popis výsledku anglicky

This study deals with the numerical solution of a 2D unsteady flow of a viscous fluid in a channel for low inlet airflow velocity. The unsteadiness of the flow is caused by a prescribed periodic motion of a part of the channel wall with large amplitudes,nearly closing the channel during oscillations. The channel is a simplified model of the glottal space in the human vocal tract. Four governing systems are considered to describe the unsteady laminar flow of a viscous fluid in the channel. The numericalsolution is implemented using the finite volume method (FVM) and the predictor?corrector MacCormack scheme with artificial viscosity using a grid of quadrilateral cells. The unsteady grid of quadrilateral cells is considered in the form of conservationlaws using the Arbitrary Lagrangian?Eulerian method. The numerical simulations of flow fields in the channel, acquired from a developed program, are presented for inlet velocity u?=4.12ms1 and Reynolds number Re=4481 and the wall motion f

Druh

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

CEP obor

BI - Akustika a kmity

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Journal of Computational and Applied Mathematics

ISSN

0377-0427

e-ISSN

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Svazek periodika

270

Číslo periodika v rámci svazku

November

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

323-329

Kód UT WoS článku

000337660100030

EID výsledku v databázi Scopus

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