Effects of a Single Blade Incidence Angle Offset on Adjacent Blades in a Linear Cascade

0549596 - ÚT 2022 RIV CH eng J - Journal Article
Fürst, J. - Lasota, M. - Lepičovský, Jan - Musil, Josef - Pech, Jan - Šidlof, P. - Šimurda, David
Effects of a Single Blade Incidence Angle Offset on Adjacent Blades in a Linear Cascade.
Processes. Roč. 9, č. 11 (2021), č. článku 1974. E-ISSN 2227-9717
R&D Projects: GA ČR(CZ) GA20-11537S
Institutional support: RVO:61388998
Keywords : compressor cascade * flutter * CFD * finite volumes * experimental validation
OECD category: Applied mechanics
Impact factor: 3.352, year: 2021
Method of publishing: Open access
https://www.mdpi.com/2227-9717/9/11/1974/htm

The paper presents a numerical and experimental investigation of the effect of incindence angle offset in a two-dimensional section of a flat blade cascade in a high-speed wind tunnel. The aim of the current work is tp determine the aerodynamic excitation forces and approximation of the unsteady blade-loading function using a quasi-stationary approach. The numerical simulations were performed with an in-house finite-volume code built on the top of the OpenFOAM framework. The experimental data were acquired for regimes corresponding to the numerical setup. The comparison of the computational and experimental results is shown for the static pressure distributions on three blades and upstream and downstream of the cascade. The plot of the aerodynamic moments acting on all five blades shows that the adjacent blades are significantly influenced by the angular offset of the middle blade.
Permanent Link: http://hdl.handle.net/11104/0327282