On the Sensitivity of the Nonlinear Term in the Outflow Boundary Condition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F21%3A00357101" target="_blank" >RIV/68407700:21220/21:00357101 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.14311/AP.2021.61.0117" target="_blank" >https://doi.org/10.14311/AP.2021.61.0117</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/AP.2021.61.0117" target="_blank" >10.14311/AP.2021.61.0117</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On the Sensitivity of the Nonlinear Term in the Outflow Boundary Condition

Popis výsledku v původním jazyce

This paper studies the artificial outflow boundary condition for the Navier-Stokes system. This type of condition is widely used and it is therefore very important to study its influence on a numerical solution of the corresponding boundary-value problem. We particularly focus on the role of the coefficient in front of the nonlinear term in the boundary condition on the outflow. The influence of this term is examined numerically, comparing the obtained results in a close neighbourhood of the outflow. The numerical experiment is carried out for a fluid flow through the channel with so called sudden extension. Presented numerical results are obtained by means of the OpenFOAM toolbox. They confirm that the kinetic energy of the flow in the channel can be controlled by means of the proposed boundary condition.

Název v anglickém jazyce

On the Sensitivity of the Nonlinear Term in the Outflow Boundary Condition

Popis výsledku anglicky

This paper studies the artificial outflow boundary condition for the Navier-Stokes system. This type of condition is widely used and it is therefore very important to study its influence on a numerical solution of the corresponding boundary-value problem. We particularly focus on the role of the coefficient in front of the nonlinear term in the boundary condition on the outflow. The influence of this term is examined numerically, comparing the obtained results in a close neighbourhood of the outflow. The numerical experiment is carried out for a fluid flow through the channel with so called sudden extension. Presented numerical results are obtained by means of the OpenFOAM toolbox. They confirm that the kinetic energy of the flow in the channel can be controlled by means of the proposed boundary condition.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10101 - Pure mathematics

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Acta Polytechnica

ISSN

1210-2709

e-ISSN

1805-2363

Svazek periodika

61

Číslo periodika v rámci svazku

Special Issue

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

5

Strana od-do

117-121

Kód UT WoS článku

000618346400012

EID výsledku v databázi Scopus

2-s2.0-85101421745