000021691 001__ 21691
000021691 005__ 20170622131300.0
000021691 04107 $$aeng
000021691 046__ $$k2017-06-15
000021691 100__ $$aVimmr, Jan
000021691 24500 $$aNUMERICAL ANALYSIS OF FLUTTER INSTABILITY IN SIMPLIFIED BLADE CASCADE

000021691 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021691 260__ $$bNational Technical University of Athens, 2017
000021691 506__ $$arestricted
000021691 520__ $$2eng$$aIn this paper the occurrence of flutter in a simplified blade cascade is analysed. The simplified blade cascade is formed by three flat plates, which perform a kinematic harmonic motion, each with a different inter-blade phase angle. The inter-blade phase angles are chosen in order for travelling wave mode of vibration to be present. The aim of the simulations is to determine the aerodynamic damping coefficients caused by the aerodynamic forces acting on the flat plates, which show whether flutter occurs. The non-linear system of Favre-averaged NavierStokes equations in ALE formulation completed by the Spalart-Allmaras turbulence model was chosen as the mathematical model. The simulations were performed using the developed inhouse CFD software based on the discontinuous Galerkin method, which offers high order of accuracy.

000021691 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021691 653__ $$asimplified blade cascade, flutter assessment, ALE formulation, discontinuous Galerkin method, aerodynamic damping parameter, travelling wave mode

000021691 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021691 720__ $$aVimmr, Jan$$iPesek, Ludek$$iPecka, Ales$$iBublik, Ondrej
000021691 8560_ $$ffischerc@itam.cas.cz
000021691 8564_ $$s1927258$$uhttps://invenio.itam.cas.cz/record/21691/files/17525.pdf$$yOriginal version of the author's contribution as presented on CD, section: [RS11] Nonlinear dynamics
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000021691 962__ $$r21500
000021691 980__ $$aPAPER