Original title: Aeroelastic Response and Wake Analysis of a Blade Cascade Exposed to Controlled Radial Cross-Flow
Authors: Procházka, Pavel P. ; Skála, Vladislav ; Šnábl, Pavel ; Prasad, Chandra Shekhar
Document type: Papers
Conference/Event: Topical Problems of Fluid Mechanics 2026, Praha (CZ), 20260218
Year: 2026
Language: eng
Abstract: The aeroelastic stability of a blade cascade exposed to a strongly three -dimensional cross - flow field is experimentally investigated. A linear cascade consisting of thirteen flexible NACA 0010 blades is studied in a wind tunnel equipped with a bypass system that introduces a controlled radial velocity component. The influence of cross -flow on blade vibration response and wake topology is examined using time -resolved particle image velocimetry. While the cascade remains stable under purely axial inflow, the introduction of radial cross -flow leads to the onset of self -induced blade oscillations with increasing amplitude. The wake structure transitions from a regular vortex street to a highly three - dimensional and chaotic flow characterized by broadband frequency content. The results highlight the significant role of radial flow in destabilizing blade cascades under off -design operating conditions.
Keywords: aeroelasticity; bypass; FFT; PIV; self-induced flutter
Project no.: GA24-12144S (CEP)
Funding provider: GA ČR
Host item entry: Proceedings of Topical Problems of Fluid Mechanics 2026, ISBN 978-80-87012-92-5, ISSN 2336-5781

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: https://tpfm.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2026/23-TPFM2026.pdf
Original record: https://hdl.handle.net/11104/0379408

Permalink: http://www.nusl.cz/ntk/nusl-775076


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