On suitable inlet boundary conditions for fluid-structure interaction problems in a channel

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F19%3A00504010" target="_blank" >RIV/61388998:_____/19:00504010 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21220/19:00335512

Result on the web

<a href="https://articles.math.cas.cz/10.21136/AM.2019.0267-18" target="_blank" >https://articles.math.cas.cz/10.21136/AM.2019.0267-18</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.21136/AM.2019.0267-18" target="_blank" >10.21136/AM.2019.0267-18</a>

Result language

angličtina

Original language name

On suitable inlet boundary conditions for fluid-structure interaction problems in a channel

Original language description

We are interested in the numerical solution of a two-dimensional fluid-structure interaction problem. A special attention is paid to the choice of physically relevant inlet boundary conditions for the case of channel closing. Three types of the inlet boundary conditions are considered. Beside the classical Dirichlet and the do-nothing boundary conditions also a generalized boundary condition motivated by the penalization prescription of the Dirichlet boundary condition is applied. The fluid flow is described by the incompressible Navier-Stokes equations in the arbitrary Lagrangian-Eulerian (ALE) form and the elastic body creating a part of the channel wall is modelled with the aid of linear elasticity. Both models are coupled with the boundary conditions prescribed at the common interface.nThe elastic and the fluid flow problems are approximated by the finite element method. The detailed derivation of the weak formulation including the boundary conditions is presented. The pseudo-elastic approach for construction of the ALE mapping is used. Results of numerical simulations for three considered inlet boundary conditions are compared. The flutter velocity is determined for a specific model problem and it is shown that the boundary condition with the penalization approach is suitable for the case of the fluid flow in a channel with vibrating walls.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10307 - Acoustics

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

2019

Confidentiality

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

Name of the periodical

Applications of Mathematics

ISSN

0862-7940

e-ISSN

—

Volume of the periodical

64

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

27

Pages from-to

225-251

UT code for WoS article

000463984700006

EID of the result in the Scopus database

2-s2.0-85064191196