Multistage Centrifugal Compressor Surge Analysis: Part II—Numerical Simulation and Dynamic Control Parameters Evaluation

[+] Author and Article Information
G. L. Arnulfi, P. Giannattasio, P. Pinamonti

University of Udine, Dipartimento di Energetica e Macchine, Udine, Italy

C. Giusto, A. F. Massardo

University of Genova, Istituto di Macchine e Sistemi Energetici, Genova, Italy

D. Micheli

University of Trieste, Dipartimento di Energetica, Trieste, Italy

J. Turbomach 121(2), 312-320 (Apr 01, 1999) (9 pages) doi:10.1115/1.2841316 History: Received February 01, 1998; Online January 29, 2008


This paper describes, from a theoretical point of view, the behavior of compression systems during surge and the effect of passive and active control devices on the instability limit of the system. A lumped parameter model is used to simulate the compression system described in Part I of this work (Arnulfi et al., 1999), based on an industrial multistage centrifugal compressor. A comparison with experimental results shows that the model is accurate enough to describe quantitatively all the features of the phenomenon. A movable wall control system is studied in order to suppress surge in the compressor. Passive and active control schemes are analyzed; they both address directly the dynamic behavior of the compression system to displace the surge line to lower flow rates. The influence of system, geometry and compressor speed is investigated: the optimum values of the control parameters and the corresponding increase in the extent of the stable operating range are presented in the paper.

Copyright © 1999 by The American Society of Mechanical Engineers
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