RT journal article
T1 Global stability analysis of an idealized compressor blade row. I. Single-blade passage analysis
A1 Glazkov, Anton
A1 Fosas de Pando, Miguel Ángel
A1 Schmid, Peter J.
A1 He, Li
A2 Ingeniería Mecánica y Diseño Industrial
AB A direct-adjoint mean flow global stability investigation of self-excited instabilities in anidealized, two-dimensional compressor blade row at off-design conditions is carried out,with a focus on acoustic feedback mechanisms underlying the observed instabilities. Thispaper is the first part of this work, where nonlinear flows, impulse responses and the globalmodes are computed for a single-passage system, with good agreement between the linearand nonlinear structures. Structural sensitivities and feedback loops are identified with theaid of wavemakers and show that dominant structures arise due to feedback mechanismslinking the pressure and suction sides of the aerofoil via acoustic waves emanating fromthe trailing edge. A separate, second part extends this analysis to multiple-blade passagesper period window by exploiting the theory of block-circulant matrices and Bloch-wavetheory.
PB American Physical Society
SN 2469-990X
YR 2023
FD 2023
LK http://hdl.handle.net/10498/31507
UL http://hdl.handle.net/10498/31507
LA eng
NO Ministerio de Economía y Competitividad
DS Repositorio Institucional de la Universidad de Cádiz
RD 09-may-2026