Numerical simulation of airfoil vibrations induced by turbulent flow

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10291259" target="_blank" >RIV/00216208:11320/15:10291259 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388998:_____/15:00437115 RIV/68407700:21220/15:00222869

Výsledek na webu

<a href="http://dx.doi.org/10.4208/cicp.181213.230514a" target="_blank" >http://dx.doi.org/10.4208/cicp.181213.230514a</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4208/cicp.181213.230514a" target="_blank" >10.4208/cicp.181213.230514a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical simulation of airfoil vibrations induced by turbulent flow

Popis výsledku v původním jazyce

The subject of the paper is the numerical simulation of the interaction of two-dimensional incompressible viscous flow and a vibrating airfoil with large amplitudes. The airfoil with three degrees of freedom performs rotation around an elastic axis, oscillations in the vertical direction and rotation of a flap. The numerical simulation consists of the finite element solution of the Reynolds averaged Navier-Stokes equations combined with Spalart-Allmaras or $k-omega$ turbulence models, coupled with a system of nonlinear ordinary differential equations describing the airfoil motion with consideration of large amplitudes. The time-dependent computational domain and approximation on a moving grid are treated by the Arbitrary Lagrangian-Eulerian formulation of the flow equations. Due to large values of the involved Reynolds numbers an application of a suitable stabilization of the finite element discretization is employed. The developed method is used for the computation of flow-induced oscillations of the airfoil near the flutter instability, when the displacements of the airfoil are large, up to 40 degrees in rotation. The paper contains the comparison of the numerical results obtained by both turbulence models.

Název v anglickém jazyce

Numerical simulation of airfoil vibrations induced by turbulent flow

Popis výsledku anglicky

The subject of the paper is the numerical simulation of the interaction of two-dimensional incompressible viscous flow and a vibrating airfoil with large amplitudes. The airfoil with three degrees of freedom performs rotation around an elastic axis, oscillations in the vertical direction and rotation of a flap. The numerical simulation consists of the finite element solution of the Reynolds averaged Navier-Stokes equations combined with Spalart-Allmaras or $k-omega$ turbulence models, coupled with a system of nonlinear ordinary differential equations describing the airfoil motion with consideration of large amplitudes. The time-dependent computational domain and approximation on a moving grid are treated by the Arbitrary Lagrangian-Eulerian formulation of the flow equations. Due to large values of the involved Reynolds numbers an application of a suitable stabilization of the finite element discretization is employed. The developed method is used for the computation of flow-induced oscillations of the airfoil near the flutter instability, when the displacements of the airfoil are large, up to 40 degrees in rotation. The paper contains the comparison of the numerical results obtained by both turbulence models.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BA - Obecná matematika

OECD FORD obor

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Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Communications in Computational Physics

ISSN

1815-2406

e-ISSN

—

Svazek periodika

17

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CN - Čínská lidová republika

Počet stran výsledku

43

Strana od-do

146-188

Kód UT WoS článku

000353692300006

EID výsledku v databázi Scopus

2-s2.0-84925788899