Original title: CFD Analysis of Flow in a Blade Cascade Deformed Due to Forced Torsional Vibration
Authors: Vomáčko, V. ; Šidlof, P. ; Šimurda, David ; Hála, Jindřich
Document type: Papers
Conference/Event: Topical Problems of Fluid Mechanics 2021, on-line (CZ), 20210217
Year: 2021
Language: eng
Abstract: 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
Keywords: blade cascade; CFD; flutter; turbomachinery
Project no.: GA20-11537S (CEP)
Funding provider: GA ČR
Host item entry: Proceedings of Topical Problems of Fluid Mechanics 2021, ISBN 978-80-87012-76-5, ISSN 2336-5781

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: http://www2.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2021/20-TPFM2021.pdf
Original record: http://hdl.handle.net/11104/0329120

Permalink: http://www.nusl.cz/ntk/nusl-508222


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