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

Result code in 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>
Alternative codes found
RIV/68407700:21220/14:00226156
Result on the web
<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>

Result language
angličtina
Original language name
Numerical solution of compressible and incompressible unsteady flows in channel inspired by vocal tract
Original language description
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
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BI - Acoustics and oscillation
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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