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

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About: Numerical solution of compressible and incompressible unsteady flows in channel inspired by vocal tract Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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 numerical solution 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 conservation laws 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 uˆ=4.12ms1 and Reynolds number Re=4481 and the wall motion frequency 100 Hz. 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 numerical solution 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 conservation laws 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 uˆ=4.12ms1 and Reynolds number Re=4481 and the wall motion frequency 100 Hz. (en)
Title	Numerical solution of compressible and incompressible unsteady flows in channel inspired by vocal tract Numerical solution of compressible and incompressible unsteady flows in channel inspired by vocal tract (en)
skos:prefLabel	Numerical solution of compressible and incompressible unsteady flows in channel inspired by vocal tract Numerical solution of compressible and incompressible unsteady flows in channel inspired by vocal tract (en)
skos:notation	RIV/61388998:_____/14:00429316!RIV15-GA0-61388998
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GA13-00522S), P(GAP101/10/1329), P(GAP101/11/0207)
http://linked.open...iv/cisloPeriodika	November
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Horáček, Jaromír Kozel, Karel
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav termomechaniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	33354
http://linked.open...ai/riv/idVysledku	RIV/61388998:_____/14:00429316
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	compressible; incompressible; unsteady; CFD; acoustic; vocal tract (en)
http://linked.open.../riv/klicoveSlovo	compressible CFD vocal tract acoustic unsteady incompressible
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[B6683951AF68]
http://linked.open...i/riv/nazevZdroje	Journal of Computational and Applied Mathematics
http://linked.open...in/vavai/riv/obor	BI
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Qualitative analysis and numerical solution of problems of flows in generally time-dependent domains with various boundary conditions Numerical and experimental research on the flow in axial turbine cascades Coupled problems of fluid and solid mechanics - nonlinear aeroelasticity
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	270
http://linked.open...iv/tvurceVysledku	Horáček, Jaromír Kozel, Karel Pořízková, P.
http://linked.open...ain/vavai/riv/wos	000337660100030
issn	0377-0427
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.cam.2013.12.045

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