CFD Analysis of Flow in a Blade Cascade Deformed Due to Forced Torsional Vibration

0547896 - ÚT 2023 RIV CZ eng C - Conference Paper (international conference)
Vomáčko, V. - Šidlof, P. - Šimurda, David - Hála, Jindřich
CFD Analysis of Flow in a Blade Cascade Deformed Due to Forced Torsional Vibration.
Proceedings of Topical Problems of Fluid Mechanics 2021. Prague: Institute of Thermomechanics AS CR, v. v. i., 2021 - (Bodnár, T.; Neustupa, T.; Šimurda, D.), s. 149-156. ISBN 978-80-87012-76-5. ISSN 2336-5781.
[Topical Problems of Fluid Mechanics 2021. on-line (CZ), 17.02.2021-19.02.2021]
R&D Projects: GA ČR(CZ) GA20-11537S
Institutional support: RVO:61388998
Keywords : blade cascade * flutter * turbomachinery * CFD
OECD category: Applied mechanics
http://www2.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2021/20-TPFM2021.pdf

The paper presents a 3D numerical simulation of flow in a blade cascade, whose geometry models the test section of a new experimental facility for blade flutter research. In the experimental setup, the middle blade of the cascade undergoes high-frequency forced sinusoidal pitching oscillation. Due to inertial forces, the slender blade deforms elastically to certain degree. The goal of this study is to assess the influence of the elastic deformation on the flow field. To compute the deformed geometry, a transient structural analysis was performed. In the second part, the CFD model of flow past a 3D blade cascade with deformed and undeformed blade is presented and these two configurations are compared. For the deformed configuration the incidence angle increases along the blade span from -1.8° to -2.7°. However, the Mach number distribution along the span varies less than expected. blade cascade, flutter, turbomachinery, CFD
Permanent Link: http://hdl.handle.net/11104/0329120