Flows in convergent channel: comparison of numerical results of different mathematical models

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F13%3A00386916" target="_blank" >RIV/61388998:_____/13:00386916 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/13:00226693

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00607-012-0269-x" target="_blank" >http://dx.doi.org/10.1007/s00607-012-0269-x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00607-012-0269-x" target="_blank" >10.1007/s00607-012-0269-x</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Flows in convergent channel: comparison of numerical results of different mathematical models

Popis výsledku v původním jazyce

This study deals with numerical solution of 2D unsteady flow of compressible and incompressible viscous fluid in convergent channel for low inlet airflow velocity. Three mathematical models based on system of Navier-Stokes equations for laminar flow arepresented and numerical results of the models in the channel are compared. 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 numerical solution is implemented using the finite volume method and the predictor-corrector MacCormack scheme with Jameson artificial viscosity using a grid of quadrilateral cells. The unsteady grid of quadrilateral cells is considered in the form of conservation laws using Arbitrary Lagrangian-Eulerian method. The numerical results, acquired from a developed program, are presented for inlet velocity uĄ = 4.12 m/s and Reynolds number ReĄ = 4 x 103 and the wall motion frequency 100 Hz.

Název v anglickém jazyce

Flows in convergent channel: comparison of numerical results of different mathematical models

Popis výsledku anglicky

This study deals with numerical solution of 2D unsteady flow of compressible and incompressible viscous fluid in convergent channel for low inlet airflow velocity. Three mathematical models based on system of Navier-Stokes equations for laminar flow arepresented and numerical results of the models in the channel are compared. 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 numerical solution is implemented using the finite volume method and the predictor-corrector MacCormack scheme with Jameson artificial viscosity using a grid of quadrilateral cells. The unsteady grid of quadrilateral cells is considered in the form of conservation laws using Arbitrary Lagrangian-Eulerian method. The numerical results, acquired from a developed program, are presented for inlet velocity uĄ = 4.12 m/s and Reynolds number ReĄ = 4 x 103 and the wall motion frequency 100 Hz.

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

Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Computing

ISSN

0010-485X

e-ISSN

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Svazek periodika

95

Číslo periodika v rámci svazku

Suppl 1

Stát vydavatele periodika

AT - Rakouská republika

Počet stran výsledku

7

Strana od-do

573-585

Kód UT WoS článku

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EID výsledku v databázi Scopus

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