Nonlinear Dynamics of Axial Flow Compressors: A Parametric Study
MARYLAND UNIV COLLEGE PARK SYSTEMS RESEARCH CENTER
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This paper presents the analysis of the dynamics of a representative axial flow compressor model emphasizing the influence of two important control parameters. These are a nondimensional parameter B previously introduced by Greitzer 1976 as a primary determinant of post-stall behavior and the setting of the throttle line. Greitzers lumped-parameter model is employed in this study, with a specific choice of compressor and throttle characteristics. Our analysis shows the presence of a rich variety of global as well as local bifurcations as the two control parameters are varied. The analysis leads to a characterization of compressor operation into three major zones the stalled zone the pre-stall zone, and the normal unstalled zone. Simulation results demonstrate the qualitatively different dynamical behaviors within each regime of parameter space.
- Fluid Mechanics
- Hydraulic and Pneumatic Equipment